category go_number go_term definition extracellular off-reactions GO:1990034 calcium ion export from cell The directed movement of calcium ions out of a cell. on-off-reactions at unspecified site GO:1903169 regulation of calcium ion transmembrane transport Any process that modulates the frequency, rate or extent of calcium ion transmembrane transport. on-off-reactions at unspecified site GO:1903170 negative regulation of calcium ion transmembrane transport Any process that stops, prevents or reduces the frequency, rate or extent of calcium ion transmembrane transport. off-reactions at unspecified site GO:1901021 positive regulation of calcium ion transmembrane transporter activity Any process that activates or increases the frequency, rate or extent of calcium ion transmembrane transporter activity. extracellular on-reactions GO:0036128 CatSper complex A sperm-specific voltage-gated calcium channel that controls the intracellular calcium ion concentration and, thereby, the swimming behavior of sperm. Consists of a heteromeric tetramer surrounding a calcium ion- selective pore. May also contain additional auxiliary subunits. extracellular on-reactions GO:0098703 calcium ion import across plasma membrane The directed movement of calcium ions from outside of a cell, across the plasma membrane and into the cytosol. extracellular on-reactions GO:1902606 regulation of large conductance calcium-activated potassium channel activity Any process that modulates the frequency, rate or extent of large conductance calcium-activated potassium channel activity. extracellular on-reactions GO:1902608 positive regulation of large conductance calcium-activated potassium channel activity Any process that activates or increases the frequency, rate or extent of large conductance calcium-activated potassium channel activity. extracellular on-reactions GO:1990035 calcium ion import into cell The directed movement of calcium ions from outside of a cell into the cytoplasmic compartment. This may occur via transport across the plasma membrane or via endocytosis. intracellular off-reactions GO:0032470 positive regulation of endoplasmic reticulum calcium ion concentration Any process that increases the concentration of calcium ions in the endoplasmic reticulum. intracellular off-reactions GO:0032865 ERMES complex A protein complex that links the endoplasmic reticulum with mitochondria and may have a role in promoting exchange of calcium and phospholipids between the two organelles. The complex is also associated with actively replicating mitochondrial DNA nucleoids, and may further coordinate mitochondrial genome replication and membrane growth. intracellular off-reactions GO:0036444 calcium ion transmembrane import into mitochondrion A process in which a calcium ion (Ca2+) is transported from one side of a membrane to the other into the mitochondrion by means of some agent such as a transporter or pore. intracellular off-reactions GO:0044233 ER-mitochondrion membrane contact site A zone of apposition between endoplasmic-reticulum and mitochondrial membranes, structured by bridging complexes. These contact sites are thought to facilitate inter-organelle calcium and phospholipid exchange. intracellular off-reactions GO:0051208 sequestering of calcium ion The process of binding or confining calcium ions such that they are separated from other components of a biological system. intracellular off-reactions GO:0051282 regulation of sequestering of calcium ion Any process that modulates the frequency, rate or extent of the binding or confining calcium ions such that they are separated from other components of a biological system. intracellular off-reactions GO:0051283 negative regulation of sequestering of calcium ion Any process that stops, prevents, or reduces the frequency, rate or extent of the binding or confining calcium ions such that they are separated from other components of a biological system. intracellular off-reactions GO:0051284 positive regulation of sequestering of calcium ion Any process that activates or increases the frequency, rate or extent of the binding or confining calcium ions such that they are separated from other components of a biological system. intracellular off-reactions GO:0051561 positive regulation of mitochondrial calcium ion concentration Any process that increases the concentration of calcium ions in mitochondria. intracellular off-reactions GO:0051561 positive regulation of mitochondrial calcium ion concentration Any process that increases the concentration of calcium ions in mitochondria. intracellular off-reactions GO:0051564 positive regulation of smooth endoplasmic reticulum calcium ion concentration Any process that increases the concentration of calcium ions in the smooth endoplasmic reticulum. intracellular off-reactions GO:1902080 regulation of calcium ion import into sarcoplasmic reticulum Any process that modulates the frequency, rate or extent of calcium ion import into sarcoplasmic reticulum. intracellular off-reactions GO:1902081 negative regulation of calcium ion import into sarcoplasmic reticulum Any process that stops, prevents or reduces the frequency, rate or extent of calcium ion import into sarcoplasmic reticulum. intracellular off-reactions GO:1902082 positive regulation of calcium ion import into sarcoplasmic reticulum Any process that activates or increases the frequency, rate or extent of calcium ion import into sarcoplasmic reticulum. intracellular off-reactions GO:1903515 calcium ion transport from cytosol to endoplasmic reticulum The directed movement of calcium ion from cytosol to endoplasmic reticulum. intracellular off-reactions GO:1990036 calcium ion import into sarcoplasmic reticulum The directed movement of calcium ions into a sarcoplasmic reticulum. intracellular off-reactions GO:1990246 uniplex complex A calcium channel complex in the mitochondrial inner membrane capable of highly-selective calcium channel activity. Its components include the EF-hand-containing proteins mitochondrial calcium uptake 1 (MICU1) and MICU2, the pore-forming subunit mitochondrial calcium uniporter (MCU) and its paralog MCUb, and the MCU regulator EMRE. intracellular off-reactions GO:1990629 phospholamban complex A protein complex found as a homopentamer of the phospholamban (PLN) protein in the sarcoplasmic reticulum (SR) membrane of cardiomyocytes. Cardiac PLN is a main determinant of muscle contraction and relaxation, by regulating intracellular calcium levels. intracellular on-off-reactions GO:0006851 mitochondrial calcium ion transport The directed movement of calcium ions (Ca2+) into, out of or within a mitochondrion. intracellular on-off-reactions GO:0032468 Golgi calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the Golgi apparatus of a cell or between the Golgi and its surroundings. intracellular on-off-reactions GO:0032469 endoplasmic reticulum calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the endoplasmic reticulum of a cell or between the endoplasmic reticulum and its surroundings. intracellular on-off-reactions GO:0032472 Golgi calcium ion transport The directed movement of calcium ions (Ca2+) into, out of or within the Golgi apparatus. intracellular on-off-reactions GO:0051560 mitochondrial calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the cytoplasm of a cell or between mitochondria and their surroundings. intracellular on-off-reactions GO:0051560 mitochondrial calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the cytoplasm of a cell or between mitochondria and their surroundings. intracellular on-off-reactions GO:0051563 smooth endoplasmic reticulum calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the smooth endoplasmic reticulum of a cell or between the smooth endoplasmic reticulum and its surroundings. intracellular on-off-reactions GO:0070296 sarcoplasmic reticulum calcium ion transport The directed movement of calcium ions (Ca2+) into, out of or within the sarcoplasmic reticulum. intracellular on-reactions GO:0001639 PLC activating G-protein coupled glutamate receptor activity A G-protein coupled receptor that binds glutamate and is linked to the inositol 1,4,5-trisphosphate/calcium signaling system. intracellular on-reactions GO:0002115 store-operated calcium entry A calcium ion entry mechanism in the plasma membrane activated by the depletion of calcium ion from the internal calcium ion store in the endoplasmic reticulum. intracellular on-reactions GO:0005218 intracellular ligand-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when a specific intracellular ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0005219 ryanodine-sensitive calcium-release channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when a ryanodine class ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0005220 inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when inositol 1,4,5-trisphosphate (IP3) has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0007223 Wnt signaling pathway, calcium modulating pathway The series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors leads to an increase in intracellular calcium and activation of protein kinase C (PKC). intracellular on-reactions GO:0008377 light-induced release of internally sequestered calcium ion The process in which the detection of light triggers the release of internally sequestered calcium ions. intracellular on-reactions GO:0008591 regulation of Wnt signaling pathway, calcium modulating pathway Any process that modulates the frequency, rate or extent of the series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors leads to an increase in intracellular calcium and activation of protein kinase C (PKC). intracellular on-reactions GO:0010880 regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum Any process that modulates the rate, frequency or extent of release of sequestered calcium ion into cytosol by the sarcoplasmic reticulum, the process in which the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol occurs via calcium release channels. intracellular on-reactions GO:0014808 release of sequestered calcium ion into cytosol by sarcoplasmic reticulum The process in which the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol occurs via calcium release channels. intracellular on-reactions GO:0015278 calcium-release channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when a specific ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0015279 store-operated calcium channel activity A ligand-gated ion channel activity which transports calcium in response to emptying of intracellular calcium stores. intracellular on-reactions GO:0031585 regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity Any process that modulates the frequency, rate or extent of the activity of the inositol 1,4,5-trisphosphate-sensitive calcium-release channel. intracellular on-reactions GO:0031586 negative regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of the inositol 1,4,5-trisphosphate-sensitive calcium-release channel. intracellular on-reactions GO:0031587 positive regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity Any process that activates or increases the frequency, rate or extent of the activity of the inositol 1,4,5-trisphosphate-sensitive calcium-release channel. intracellular on-reactions GO:0032237 activation of store-operated calcium channel activity A process that initiates the activity of an inactive store-operated calcium channel. intracellular on-reactions GO:0032471 negative regulation of endoplasmic reticulum calcium ion concentration Any process that decreases the concentration of calcium ions in the endoplasmic reticulum. intracellular on-reactions GO:0045812 negative regulation of Wnt signaling pathway, calcium modulating pathway Any process that stops, prevents, or reduces the frequency, rate or extent of the series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors leads to an increase in intracellular calcium and activation of protein kinase C (PKC). intracellular on-reactions GO:0045813 positive regulation of Wnt signaling pathway, calcium modulating pathway Any process that activates or increases the frequency, rate or extent of the series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors leads to an increase in intracellular calcium and activation of protein kinase C (PKC). intracellular on-reactions GO:0048763 calcium-induced calcium release activity Release of calcium ions from an intracellular vesicle on induction by increased calcium concentration. intracellular on-reactions GO:0051209 release of sequestered calcium ion into cytosol The process in which calcium ions sequestered in the endoplasmic reticulum, Golgi apparatus or mitochondria are released into the cytosolic compartment. intracellular on-reactions GO:0051279 regulation of release of sequestered calcium ion into cytosol Any process that modulates the frequency, rate or extent of the release into the cytosolic compartment of calcium ions sequestered in the endoplasmic reticulum or mitochondria. intracellular on-reactions GO:0051280 negative regulation of release of sequestered calcium ion into cytosol Any process that stops, prevents, or reduces the frequency, rate or extent of the release into the cytosolic compartment of calcium ions sequestered in the endoplasmic reticulum or mitochondria. intracellular on-reactions GO:0051281 positive regulation of release of sequestered calcium ion into cytosol Any process that activates or increases the frequency, rate or extent of the release into the cytosolic compartment of calcium ions sequestered in the endoplasmic reticulum or mitochondria. intracellular on-reactions GO:0051482 positive regulation of cytosolic calcium ion concentration involved in phospholipase C-activating G-protein coupled signaling pathway Any process that increases the concentration of calcium ions in the cytosol that occurs as part of a PLC-activating G-protein coupled receptor signaling pathway. G-protein-activated PLC hydrolyses phosphatidylinositol-bisphosphate (PIP2) to release diacylglycerol (DAG) and inositol trisphosphate (IP3). IP3 then binds to calcium release channels in the endoplasmic reticulum (ER) to trigger calcium ion release into the cytosol. intracellular on-reactions GO:0051562 negative regulation of mitochondrial calcium ion concentration Any process that decreases the concentration of calcium ions in mitochondria. intracellular on-reactions GO:0051565 negative regulation of smooth endoplasmic reticulum calcium ion concentration Any process that decreases the concentration of calcium ions in the smooth endoplasmic reticulum. intracellular on-reactions GO:0060314 regulation of ryanodine-sensitive calcium-release channel activity Any process that modulates the activity of a ryanodine-sensitive calcium-release channel. The ryanodine-sensitive calcium-release channel catalyzes the transmembrane transfer of a calcium ion by a channel that opens when a ryanodine class ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0060315 negative regulation of ryanodine-sensitive calcium-release channel activity Any process that decreases the activity of a ryanodine-sensitive calcium-release channel. The ryanodine-sensitive calcium-release channel catalyzes the transmembrane transfer of a calcium ion by a channel that opens when a ryanodine class ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0060316 positive regulation of ryanodine-sensitive calcium-release channel activity Any process that increases the activity of a ryanodine-sensitive calcium-release channel. The ryanodine-sensitive calcium-release channel catalyzes the transmembrane transfer of a calcium ion by a channel that opens when a ryanodine class ligand has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0061454 Golgi calcium ion export The directed movement of calcium ions (Ca2+) out of the Golgi apparatus into the cytosol. intracellular on-reactions GO:0072345 NAADP-sensitive calcium-release channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when nicotinic acid adenine dinucleotide phosphate (NAADP) has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0072346 cADPR-sensitive calcium-release channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens when cyclic adenosine diphosphate ribose (cADPR) has been bound by the channel complex or one of its constituent parts. intracellular on-reactions GO:0086094 positive regulation of ryanodine-sensitive calcium-release channel activity by adrenergic receptor signaling pathway involved in positive regulation of cardiac muscle contraction An adrenergic receptor signaling pathway that contributes to an increase in frequency or rate of cardiac muscle contraction through phosphorylation and enhancement of the ryanodine receptor, a calcium-activated calcium-release channel found in the membrane of the sarcoplasmic reticulum. An adrenergic receptor-activated adenylate cyclase generates cAMP. cAMP then activates the cAMP-dependent protein kinase A (PKA), which phosphorylates the ryanodine receptor (RyR). PKA-phosphorylation of RyR enhances channel activity by sensitizing the channel to cytosolic calcium. Cytosolic calcium stimulates contractile proteins to promote muscle contraction. intracellular on-reactions GO:1901339 regulation of store-operated calcium channel activity Any process that modulates the frequency, rate or extent of store-operated calcium channel activity. intracellular on-reactions GO:1901340 negative regulation of store-operated calcium channel activity Any process that stops, prevents or reduces the frequency, rate or extent of store-operated calcium channel activity. intracellular on-reactions GO:1901341 positive regulation of store-operated calcium channel activity Any process that activates or increases the frequency, rate or extent of store-operated calcium channel activity. intracellular on-reactions GO:1901472 regulation of Golgi calcium ion export Any process that modulates the frequency, rate or extent of Golgi calcium ion export. intracellular on-reactions GO:1903514 calcium ion transport from endoplasmic reticulum to cytosol The directed movement of calcium ion from endoplasmic reticulum to cytosol. intracellular on-reactions GO:1990425 ryanodine receptor complex A voltage-gated calcium-release channel complex of the sarcoplasmic or endoplasmic reticulum. It plays an important role in the excitation-contraction (E-C) coupling of muscle cells. RyR comprises a family of ryanodine receptors, widely expressed throughout the animal kingdom. intracellular on-reactions GO:2001256 regulation of store-operated calcium entry Any process that modulates the frequency, rate or extent of store-operated calcium entry. off-reactions at unspecified site GO:0005388 calcium-transporting ATPase activity Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + Ca2+(cis) = ADP + phosphate + Ca2+(trans). off-reactions at unspecified site GO:0005432 calcium:sodium antiporter activity Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + Na+(out) = Ca2+(out) + Na+(in). off-reactions at unspecified site GO:0008273 calcium, potassium:sodium antiporter activity Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + K+(in) + Na+(out) = Ca2+(out) + K+(out) + Na+(in). off-reactions at unspecified site GO:0015368 calcium:cation antiporter activity Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + cation(out) = Ca2+(out) + cation(in). off-reactions at unspecified site GO:0015369 calcium:proton antiporter activity Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + H+(out) = Ca2+(out) + H+(in). off-reactions at unspecified site GO:0051481 negative regulation of cytosolic calcium ion concentration Any process that decreases the concentration of calcium ions in the cytosol. off-reactions at unspecified site GO:0086038 calcium:sodium antiporter activity involved in regulation of cardiac muscle cell membrane potential Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + Na+(out) = Ca2+(out) + Na+(in), which contributes to regulating the membrane potential of a cardiac muscle cell. off-reactions at unspecified site GO:0086039 calcium-transporting ATPase activity involved in regulation of cardiac muscle cell membrane potential Catalysis of the transfer of a solute or solutes from one side of a cardiac muscle cell plasma membrane to the other according to the reaction: ATP + H2O + Ca2+(cis) = ADP + phosphate + Ca2+(trans). The transfer contributes to the regulation of the plasma membrane potential. off-reactions at unspecified site GO:0090534 calcium ion-transporting ATPase complex Protein complex that carries out the reaction: ATP + H2O + Ca2+(out) = ADP + phosphate + Ca2+(in). off-reactions at unspecified site GO:1901019 regulation of calcium ion transmembrane transporter activity Any process that modulates the frequency, rate or extent of calcium ion transmembrane transporter activity. off-reactions at unspecified site GO:1901020 negative regulation of calcium ion transmembrane transporter activity Any process that stops, prevents or reduces the frequency, rate or extent of calcium ion transmembrane transporter activity. off-reactions at unspecified site GO:1901021 positive regulation of calcium ion transmembrane transporter activity Any process that activates or increases the frequency, rate or extent of calcium ion transmembrane transporter activity. off-reactions at unspecified site GO:1901894 regulation of calcium-transporting ATPase activity Any process that modulates the frequency, rate or extent of calcium-transporting ATPase activity. off-reactions at unspecified site GO:1901895 negative regulation of calcium-transporting ATPase activity Any process that stops, prevents or reduces the frequency, rate or extent of calcium-transporting ATPase activity. off-reactions at unspecified site GO:1901896 positive regulation of calcium-transporting ATPase activity Any process that activates or increases the frequency, rate or extent of calcium-transporting ATPase activity. off-reactions at unspecified site GO:1903279 regulation of calcium:sodium antiporter activity Any process that modulates the frequency, rate or extent of calcium:sodium antiporter activity. off-reactions at unspecified site GO:1903280 negative regulation of calcium:sodium antiporter activity Any process that stops, prevents or reduces the frequency, rate or extent of calcium:sodium antiporter activity. off-reactions at unspecified site GO:1903281 positive regulation of calcium:sodium antiporter activity Any process that activates or increases the frequency, rate or extent of calcium:sodium antiporter activity. on-off-reactions at unspecified site GO:0006816 calcium ion transport The directed movement of calcium (Ca) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. on-off-reactions at unspecified site GO:0006874 cellular calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell. on-off-reactions at unspecified site GO:0010617 circadian regulation of calcium ion oscillation Any process that modulates the concentration of cytosolic free calcium ion [Ca2+]cyt with a regularity of approximately 24 hours. on-off-reactions at unspecified site GO:0015085 calcium ion transmembrane transporter activity Catalysis of the transfer of calcium (Ca) ions from one side of a membrane to the other. on-off-reactions at unspecified site GO:0034704 calcium channel complex An ion channel complex through which calcium ions pass. on-off-reactions at unspecified site GO:0051480 cytosolic calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within the cytosol of a cell or between the cytosol and its surroundings. on-off-reactions at unspecified site GO:0051924 regulation of calcium ion transport Any process that modulates the frequency, rate or extent of the directed movement of calcium ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. on-off-reactions at unspecified site GO:0051926 negative regulation of calcium ion transport Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of calcium ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. on-off-reactions at unspecified site GO:0051928 positive regulation of calcium ion transport Any process that activates or increases the frequency, rate or extent of the directed movement of calcium ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. on-off-reactions at unspecified site GO:0055074 calcium ion homeostasis Any process involved in the maintenance of an internal steady state of calcium ions within an organism or cell. on-off-reactions at unspecified site GO:0060401 cytosolic calcium ion transport The directed movement of calcium ions (Ca2+) into, out of or within the cytosol. on-off-reactions at unspecified site GO:0070509 calcium ion import The directed movement of calcium ions into a cell or organelle. on-off-reactions at unspecified site GO:0070588 calcium ion transmembrane transport A process in which a calcium ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore. on-off-reactions at unspecified site GO:0090279 regulation of calcium ion import Any process that modulates the rate, frequency, or extent of the directed movement of calcium ions into a cell or organelle. on-off-reactions at unspecified site GO:0090280 positive regulation of calcium ion import Any process that increases the rate, frequency, or extent of the directed movement of calcium ions into a cell or organelle. on-off-reactions at unspecified site GO:0090281 negative regulation of calcium ion import Any process that decreases the rate, frequency, or extent of the directed movement of calcium ions into a cell or organelle. on-off-reactions at unspecified site GO:1901660 calcium ion export The directed movement of calcium ion out of a cell or organelle. on-reactions at unspecified site GO:0005245 voltage-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0005246 calcium channel regulator activity Modulates the activity of a calcium channel. on-reactions at unspecified site GO:0005262 calcium channel activity Catalysis of facilitated diffusion of a calcium ion (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. on-reactions at unspecified site GO:0005891 voltage-gated calcium channel complex A protein complex that forms a transmembrane channel through which calcium ions may pass in response to changes in membrane potential. on-reactions at unspecified site GO:0007204 positive regulation of cytosolic calcium ion concentration Any process that increases the concentration of calcium ions in the cytosol. on-reactions at unspecified site GO:0007340 acrosome reaction The discharge, by sperm, of a single, anterior secretory granule following the sperm's attachment to the zona pellucida surrounding the oocyte. The process begins with the fusion of the outer acrosomal membrane with the sperm plasma membrane and ends with the exocytosis of the acrosomal contents into the egg. on-reactions at unspecified site GO:0008086 light-activated voltage-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel that is activated in response to light. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0008087 light-activated voltage-gated calcium channel complex A protein complex that forms a transmembrane channel through which calcium ions may cross a cell membrane in response to changes in membrane potential generated in response to a light stimulus. on-reactions at unspecified site GO:0008331 high voltage-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a high voltage-gated channel. A high voltage-gated channel is a channel whose open state is dependent on high voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0008332 low voltage-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a low voltage-gated channel. A low voltage-gated channel is a channel whose open state is dependent on low voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0010522 regulation of calcium ion transport into cytosol Any process that modulates the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. on-reactions at unspecified site GO:0010523 negative regulation of calcium ion transport into cytosol Any process that decreases the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. on-reactions at unspecified site GO:0010524 positive regulation of calcium ion transport into cytosol Any process that increases the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. on-reactions at unspecified site GO:0015275 stretch-activated, cation-selective, calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by a channel that opens in response to a mechanical stress in the form of stretching. on-reactions at unspecified site GO:0019855 calcium channel inhibitor activity Stops, prevents, or reduces the activity of a calcium channel. on-reactions at unspecified site GO:0060072 large conductance calcium-activated potassium channel activity Catalysis of the transmembrane transfer of potassium by a channel with a unit conductance of 100 to 220 picoSiemens that opens in response to stimulus by concerted actions of internal calcium ions and membrane potential. Large conductance calcium-activated potassium channels are less sensitive to calcium than are small or intermediate conductance calcium-activated potassium channels. Transport by a channel involves catalysis of facilitated diffusion of a solute (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel, without evidence for a carrier-mediated mechanism. on-reactions at unspecified site GO:0060402 calcium ion transport into cytosol The directed movement of calcium ions (Ca2+) into the cytosol. on-reactions at unspecified site GO:0060470 positive regulation of cytosolic calcium ion concentration involved in egg activation The process that increases the concentration of calcium ions in the cytosol after fertilization or the physiological activation of an egg. on-reactions at unspecified site GO:0061577 generation of L-type calcium current A process in which a calcium ion is transported from one side of a membrane to the other by means of an L-type calcium channel. on-reactions at unspecified site GO:0070978 voltage-gated calcium channel complex assembly Cellular protein complex assembly that results in the formation of a voltage-gated calcium channel complex. on-reactions at unspecified site GO:0086007 voltage-gated calcium channel activity involved in cardiac muscle cell action potential Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel across the plasma membrane of a cardiac muscle cell that contributes to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0086056 voltage-gated calcium channel activity involved in AV node cell action potential Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel across the plasma membrane of an AV node cardiac muscle cell that contributes to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0086057 voltage-gated calcium channel activity involved in bundle of His cell action potential Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel across the plasma membrane of a bundle of His cardiac muscle cell that contributes to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0086058 voltage-gated calcium channel activity involved in Purkinje myocyte cell action potential Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel across the plasma membrane of an Purkinje myocyte cell that contributes to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0086059 voltage-gated calcium channel activity involved SA node cell action potential Catalysis of the transmembrane transfer of a calcium ion by a voltage-gated channel across the plasma membrane of an SA node cardiac muscle cell that contributes to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:0097364 stretch-activated, cation-selective, calcium channel activity involved in regulation of action potential Catalysis of the transmembrane transfer of a calcium ion by a channel that opens in response to a mechanical stress in the form of stretching, and contributing to the regulation of action potential. on-reactions at unspecified site GO:0097365 stretch-activated, cation-selective, calcium channel activity involved in regulation of cardiac muscle cell action potential Catalysis of the transmembrane transfer of a calcium ion by a channel that opens in response to a mechanical stress in the form of stretching, and contributing to the regulation of action potential in a cardiac muscle cell. on-reactions at unspecified site GO:0097553 calcium ion transmembrane import into cytosol A process in which a calcium ion is transported from one side of a membrane to the other into the cytosol by means of some agent such as a transporter or pore. on-reactions at unspecified site GO:1901385 regulation of voltage-gated calcium channel activity Any process that modulates the frequency, rate or extent of voltage-gated calcium channel activity. on-reactions at unspecified site GO:1901386 negative regulation of voltage-gated calcium channel activity Any process that stops, prevents or reduces the frequency, rate or extent of voltage-gated calcium channel activity. on-reactions at unspecified site GO:1901387 positive regulation of voltage-gated calcium channel activity Any process that activates or increases the frequency, rate or extent of voltage-gated calcium channel activity. on-reactions at unspecified site GO:1901841 regulation of high voltage-gated calcium channel activity Any process that modulates the frequency, rate or extent of high voltage-gated calcium channel activity. on-reactions at unspecified site GO:1901843 positive regulation of high voltage-gated calcium channel activity Any process that activates or increases the frequency, rate or extent of high voltage-gated calcium channel activity. on-reactions at unspecified site GO:1902225 negative regulation of acrosome reaction Any process that stops, prevents or reduces the frequency, rate or extent of acrosome reaction. on-reactions at unspecified site GO:1902514 regulation of generation of L-type calcium current Any process that modulates the frequency, rate or extent of generation of L-type calcium current. on-reactions at unspecified site GO:1902607 negative regulation of large conductance calcium-activated potassium channel activity Any process that stops, prevents or reduces the frequency, rate or extent of large conductance calcium-activated potassium channel activity. on-reactions at unspecified site GO:1902656 calcium ion import into cytosol The directed movement of calcium ion into a cytosol. on-reactions at unspecified site GO:1990028 intermediate voltage-gated calcium channel activity Catalysis of the transmembrane transfer of a calcium ion by an intermediate voltage-gated channel. An intermediate voltage-gated channel is a channel whose open state is dependent on intermediate voltage across the membrane in which it is embedded. on-reactions at unspecified site GO:1990454 L-type voltage-gated calcium channel complex A type of voltage-dependent calcium channel responsible for excitation-contraction coupling of skeletal, smooth, and cardiac muscle. 'L' stands for 'long-lasting' referring to the length of activation. on-reactions at unspecified site GO:2000344 positive regulation of acrosome reaction Any process that activates or increases the frequency, rate or extent of the acrosome reaction. signaling functions GO:0004117 calmodulin-dependent cyclic-nucleotide phosphodiesterase activity Catalysis of the reaction: nucleoside 3',5'-cyclic phosphate + H2O = nucleoside 5'-phosphate; catalytic activity is regulated by calmodulin. signaling functions GO:0004198 calcium-dependent cysteine-type endopeptidase activity Catalysis of the hydrolysis of nonterminal peptide bonds in a polypeptide chain by a mechanism using a cysteine residue at the enzyme active center, and requiring the presence of calcium. signaling functions GO:0004683 calmodulin-dependent protein kinase activity Catalysis of the reactions: ATP + a protein serine = ADP + protein serine phosphate; and ATP + a protein threonine = ADP + protein threonine phosphate. These reactions require the presence of calcium-bound calmodulin. signaling functions GO:0004698 calcium-dependent protein kinase C activity Catalysis of the reaction: ATP + a protein = ADP + a phosphoprotein. This reaction requires diacylglycerol and calcium. signaling functions GO:0004723 calcium-dependent protein serine/threonine phosphatase activity Catalysis of the reactions: protein serine phosphate + H2O = protein serine + phosphate; and protein threonine phosphate + H2O = protein threonine + phosphate. These reactions require the presence of calcium ions. signaling functions GO:0005227 calcium activated cation channel activity Catalysis of the calcium concentration-regulatable energy-independent passage of cations across a lipid bilayer down a concentration gradient. signaling functions GO:0005229 intracellular calcium activated chloride channel activity Catalysis of the transmembrane transfer of chloride by a channel that opens in response to stimulus by a calcium ion or ions. Transport by a channel involves catalysis of facilitated diffusion of a solute (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel, without evidence for a carrier-mediated mechanism. signaling functions GO:0005509 calcium ion binding Interacting selectively and non-covalently with calcium ions (Ca2+). signaling functions GO:0005513 detection of calcium ion The series of events in which a calcium ion stimulus is received by a cell and converted into a molecular signal. signaling functions GO:0005516 calmodulin binding Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states. signaling functions GO:0005544 calcium-dependent phospholipid binding Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester, in the presence of calcium. signaling functions GO:0005954 calcium- and calmodulin-dependent protein kinase complex An enzyme complex which in eukaryotes is composed of four different chains: alpha, beta, gamma, and delta. The different isoforms assemble into homo- or heteromultimeric holoenzymes composed of 8 to 12 subunits. Catalyzes the phosphorylation of proteins to O-phosphoproteins. signaling functions GO:0005955 calcineurin complex A heterodimeric calcium ion and calmodulin dependent protein phosphatase composed of catalytic and regulatory subunits; the regulatory subunit is very similar in sequence to calmodulin. signaling functions GO:0008048 calcium sensitive guanylate cyclase activator activity Increases the activity of guanylate cyclase in response to a change in calcium ion concentration. signaling functions GO:0008294 calcium- and calmodulin-responsive adenylate cyclase activity Catalysis of the reaction: ATP = 3',5'-cyclic AMP + diphosphate, stimulated by calcium-bound calmodulin. signaling functions GO:0008427 calcium-dependent protein kinase inhibitor activity Stops, prevents or reduces the activity of a calcium-dependent protein kinase. signaling functions GO:0008597 calcium-dependent protein serine/threonine phosphatase regulator activity Modulation of the activity of the enzyme calcium-dependent protein serine/threonine phosphatase. signaling functions GO:0009931 calcium-dependent protein serine/threonine kinase activity Catalysis of the reactions: ATP + a protein serine = ADP + protein serine phosphate; and ATP + a protein threonine = ADP + protein threonine phosphate. These reactions are dependent on the presence of calcium ions. signaling functions GO:0010857 calcium-dependent protein kinase activity Catalysis of the reaction: a protein + ATP = a phosphoprotein + ADP. This reaction requires the presence of calcium. signaling functions GO:0010858 calcium-dependent protein kinase regulator activity Modulates the activity of a calcium-dependent protein kinase, an enzyme which phosphorylates a protein in a calcium-dependent manner. signaling functions GO:0010859 calcium-dependent cysteine-type endopeptidase inhibitor activity Stops, prevents or reduces the activity of a calcium-dependent cysteine-type endopeptidase, any enzyme that hydrolyzes peptide bonds in polypeptides by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile in a calcium-dependent manner. signaling functions GO:0010881 regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion Any process that modulates the frequency, rate or extent of cardiac muscle contraction via the regulation of the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol. The sarcoplasmic reticulum is the endoplasmic reticulum of striated muscle, specialised for the sequestration of calcium ions that are released upon receipt of a signal relayed by the T tubules from the neuromuscular junction. signaling functions GO:0010882 regulation of cardiac muscle contraction by calcium ion signaling Any process that modulates the frequency, rate or extent of cardiac muscle contraction by changing the calcium ion signals that trigger contraction. signaling functions GO:0014722 regulation of skeletal muscle contraction by calcium ion signaling Any process that modulates the frequency, rate or extent of skeletal muscle contraction by changing the calcium ion signals that trigger contraction. signaling functions GO:0014723 regulation of skeletal muscle contraction by modulation of calcium ion sensitivity of myofibril Any process that modulates the frequency, rate or extent of skeletal muscle contraction by changing calcium ion binding affinity of the myofibril. signaling functions GO:0014809 regulation of skeletal muscle contraction by regulation of release of sequestered calcium ion Any process that modulates the frequency, rate or extent of skeletal muscle contraction via the regulation of the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol. The sarcoplasmic reticulum is the endoplasmic reticulum of striated muscle, specialised for the sequestration of calcium ions that are released upon receipt of a signal relayed by the T tubules from the neuromuscular junction. signaling functions GO:0014810 positive regulation of skeletal muscle contraction by regulation of release of sequestered calcium ion Any process that activates, maintains or increases the frequency, rate or extent of skeletal muscle contraction via the regulation of the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol. The sarcoplasmic reticulum is the endoplasmic reticulum of striated muscle, specialised for the sequestration of calcium ions that are released upon receipt of a signal relayed by the T tubules from the neuromuscular junction. signaling functions GO:0014811 negative regulation of skeletal muscle contraction by regulation of release of sequestered calcium ion Any process that stops, prevents, or reduces the frequency, rate or extent of skeletal muscle contraction via the regulation of the release of sequestered calcium ion by sarcoplasmic reticulum into cytosol. The sarcoplasmic reticulum is the endoplasmic reticulum of striated muscle, specialised for the sequestration of calcium ions that are released upon receipt of a signal relayed by the T tubules from the neuromuscular junction. signaling functions GO:0015269 calcium-activated potassium channel activity Catalysis of the calcium concentration-regulatable energy-independent passage of potassium ions across a lipid bilayer down a concentration gradient. signaling functions GO:0016286 small conductance calcium-activated potassium channel activity Catalysis of the transmembrane transfer of potassium by a channel with a unit conductance of 2 to 20 picoSiemens that opens in response to stimulus by internal calcium ions. Small conductance calcium-activated potassium channels are more sensitive to calcium than are large conductance calcium-activated potassium channels. Transport by a channel involves catalysis of facilitated diffusion of a solute (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel, without evidence for a carrier-mediated mechanism. signaling functions GO:0016339 calcium-dependent cell-cell adhesion via plasma membrane cell adhesion molecules The attachment of one cell to another cell via adhesion molecules that require the presence of calcium for the interaction. signaling functions GO:0016340 calcium-dependent cell-matrix adhesion The binding of a cell to the extracellular matrix via adhesion molecules that require the presence of calcium for the interaction. signaling functions GO:0017156 calcium ion-dependent exocytosis The release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle by fusion of the vesicle with the plasma membrane of a cell, requiring the presence of calcium ions. signaling functions GO:0017158 regulation of calcium ion-dependent exocytosis Any process that modulates the frequency, rate or extent of calcium ion-dependent exocytosis. signaling functions GO:0018025 calmodulin-lysine N-methyltransferase activity Catalysis of the reaction: S-adenosyl-L-methionine + calmodulin L-lysine = S-adenosyl-L-homocysteine + calmodulin N6-methyl-L-lysine. signaling functions GO:0019722 calcium-mediated signaling Any intracellular signal transduction in which the signal is passed on within the cell via calcium ions. signaling functions GO:0021808 cytosolic calcium signaling involved in initiation of cell movement in glial-mediated radial cell migration The process that results in the fluctuations in intracellular calcium that are responsible for the initiation of movement as a component of the process of cerebral cortex glial-mediated radial migration. signaling functions GO:0021845 neurotransmitter-mediated guidance of interneurons involved in substrate-independent cerebral cortex tangential migration The response of migrating interneurons to neurotransmitters that alter electrical activity in cells in calcium dependent manner. signaling functions GO:0021945 positive regulation of cerebellar granule cell migration by calcium The process that increases the extent of granule cell motility using intracellular calcium signaling mechanisms during radial migration. signaling functions GO:0022894 Intermediate conductance calcium-activated potassium channel activity Catalysis of the transmembrane transfer of potassium by a channel with a unit conductance of 20 to 85 picoSiemens that opens in response to stimulus by internal calcium ions. Intermediate conductance calcium-activated potassium channels are more sensitive to calcium than are large conductance calcium-activated potassium channels. Transport by a channel involves catalysis of facilitated diffusion of a solute (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel, without evidence for a carrier-mediated mechanism. signaling functions GO:0030172 troponin C binding Interacting selectively and non-covalently with troponin C, the calcium-binding subunit of the troponin complex. signaling functions GO:0030899 calcium-dependent ATPase activity Catalysis of the reaction: ATP + H2O = ADP + phosphate. This reaction requires the presence of calcium ion (Ca2+). signaling functions GO:0032517 SOD1-calcineurin complex A protein complex formed by the association of superoxide dismutase 1 (SOD1) with calcineurin; complex formation is implicated in activation of calcineurin by SOD1. signaling functions GO:0032766 NHE3/E3KARP/ACTN4 complex A heterotrimeric protein complex formed by the association of NHE3, E3KARP and alpha-actinin upon an increase in calcium ion concentration; found in clusters localized on plasma membrane and in intracellular compartments. signaling functions GO:0033173 calcineurin-NFAT signaling cascade Any intracellular signal transduction in which the signal is passed on within the by activation of a member of the NFAT protein family as a consequence of NFAT dephosphorylation by Ca(2+)-activated calcineurin. The cascade begins with calcium-dependent activation of the phosphatase calcineurin. Calcineurin dephosphorylates multiple phosphoserine residues on NFAT, resulting in the translocation of NFAT to the nucleus. The cascade ends with regulation of transcription by NFAT. The calcineurin-NFAT cascade lies downstream of many cell surface receptors, including G-protein coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs) that signal to mobilize calcium ions (Ca2+). signaling functions GO:0033192 calmodulin-dependent protein phosphatase activity Catalysis of the reaction: protein serine/threonine phosphate + H2O = protein serine/threonine + phosphate, dependent on the presence of calcium-bound calmodulin. signaling functions GO:0043006 activation of phospholipase A2 activity by calcium-mediated signaling A series of molecular signals that leads to the upregulation of calcium-dependent phospholipase A2 activity in response to the signal. signaling functions GO:0044548 S100 protein binding Interacting selectively and non-covalently with a S100 protein. S100 is a small calcium and zinc binding protein produced in astrocytes that is implicated in Alzheimer's disease, Down Syndrome and ALS. signaling functions GO:0045955 negative regulation of calcium ion-dependent exocytosis Any process that stops, prevents, or reduces the frequency, rate or extent of calcium ion-dependent exocytosis. signaling functions GO:0045956 positive regulation of calcium ion-dependent exocytosis Any process that activates or increases the frequency, rate or extent of calcium ion-dependent exocytosis. signaling functions GO:0046586 regulation of calcium-dependent cell-cell adhesion Any process that modulates the frequency, rate or extent of the attachment of one cell to another cell via adhesion molecules that require the presence of calcium for the interaction. signaling functions GO:0046587 positive regulation of calcium-dependent cell-cell adhesion Any process that activates or increases the frequency, rate or extent of calcium-dependent cell-cell adhesion. signaling functions GO:0046588 negative regulation of calcium-dependent cell-cell adhesion Any process that stops, prevents, or reduces the frequency, rate or extent of calcium-dependent cell-cell adhesion. signaling functions GO:0047498 calcium-dependent phospholipase A2 activity Catalysis of the reaction: phosphatidylcholine + H2O = 1-acylglycerophosphocholine + a carboxylate. This reaction requires Ca2+. signaling functions GO:0048101 calcium- and calmodulin-regulated 3',5'-cyclic-GMP phosphodiesterase activity Catalysis of the reaction: guanosine 3',5'-cyclic phosphate + H2O = guanosine 5'-phosphate. The reaction is calmodulin and calcium-sensitive. signaling functions GO:0048306 calcium-dependent protein binding Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in the presence of calcium. signaling functions GO:0048791 calcium ion-dependent exocytosis of neurotransmitter The release of a neurotransmitter into the synaptic cleft, where the release step is dependent on the presence of calcium ions (Ca2+). The neurotransmitter is contained within a membrane-bounded vesicle, and is released by fusion of the vesicle with the presynaptic plasma membrane of a nerve cell. signaling functions GO:0050372 ubiquitin-calmodulin ligase activity Catalysis of the reaction: n ATP + calmodulin + n ubiquitin = n AMP + n diphosphate + ubiquitin(n)-calmodulin. signaling functions GO:0050429 calcium-dependent phospholipase C activity Catalysis of the reaction: a phosphatidylcholine + H2O = 1,2-diacylglycerol + choline phosphate. This reaction requires Ca2+. signaling functions GO:0051592 response to calcium ion Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a calcium ion stimulus. signaling functions GO:0060471 cortical granule exocytosis The process of secretion by a cell that results in the release of intracellular molecules contained within a cortical granule by fusion of the vesicle with the plasma membrane of a cell. A cortical granule is a specialized secretory vesicle that is released during egg activation that changes the surface of the egg to prevent polyspermy. signaling functions GO:0060472 positive regulation of cortical granule exocytosis by positive regulation of cytosolic calcium ion concentration Any process that activates or increases the frequency, rate or extent of cortical granule exocytosis by directing movement of calcium ions (Ca2+) into the cytosol. signaling functions GO:0060478 acrosomal vesicle exocytosis The release of intracellular molecules contained within the acrosomal granule by fusion of the vesicle with the plasma membrane of the oocyte, requiring calcium ions. signaling functions GO:0061400 positive regulation of transcription from RNA polymerase II promoter in response to calcium ion Any process that increases the frequency, rate or extent of transcription from an RNA polymerase II promoter in response to a calcium ion stimulus. signaling functions GO:0061588 calcium activated phospholipid scrambling The movement of a population of phospholipid molecules from one leaflet of the plasma membrane bilayer to the opposite leaflet as a result of a calcium stimulus. signaling functions GO:0061589 calcium activated phosphatidylserine scrambling The movement of a population of phosphatidylserine molecules from one leaflet of the plasma membrane bilayer to the opposite leaflet as a result of a calcium stimulus. signaling functions GO:0061590 calcium activated phosphatidylcholine scrambling The movement of a population of phosphatidylcholine molecules from one leaflet of the plasma membrane bilayer to the opposite leaflet as a result of a calcium stimulus. signaling functions GO:0061591 calcium activated galactosylceramide scrambling The movement of a population of galactosylceramide molecules from one leaflet of the plasma membrane bilayer to the opposite leaflet as a result of a calcium stimulus. signaling functions GO:0070884 regulation of calcineurin-NFAT signaling cascade Any process that modulates the frequency, rate or extent of the calcineurin-NFAT signaling cascade. signaling functions GO:0070885 negative regulation of calcineurin-NFAT signaling cascade Any process that stops, prevents, or reduces the frequency, rate or extent of the calcineurin-NFAT signaling cascade. signaling functions GO:0070886 positive regulation of calcineurin-NFAT signaling cascade Any process that activates or increases the frequency, rate or extent of signaling via the calcineurin-NFAT signaling cascade. signaling functions GO:0071277 cellular response to calcium ion Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a calcium ion stimulus. signaling functions GO:0072732 cellular response to calcium ion starvation Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of deprivation of calcium ions. signaling functions GO:0097231 cell motility in response to calcium ion Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another as a result of a calcium ion stimulus. signaling functions GO:0098746 fast, calcium ion-dependent exocytosis of neurotransmitter The fast, initial phase of calcium ion-induced neurotransmitter release, via exocytosis, into the synaptic cleft. This depends on low affinity calcium sensors and typically begins a fraction of a millisecond after Ca2+ influx, and decays rapidly (1-10ms) with a decay constant of around 5-10ms. The underlying molecular mechanisms of this process are distinct from those of the later, slow phase of release. signaling functions GO:0098747 slow, calcium ion-dependent exocytosis of neurotransmitter The slow, second phase of calcium ion-induced neurotransmitter release, via exocytosis, into the synaptic cleft. This depends on high affinity calcium sensors and decays slowly, typically with a decay constant of over 100ms. The underlying molecular mechanisms of this process are distinct from those of the earlier, fast phase of release. signaling functions GO:1900621 regulation of transcription from RNA polymerase II promoter by calcium-mediated signaling Calcium-mediated signaling that results in regulation of transcription from an RNA polymerase II promoter. signaling functions GO:1900622 positive regulation of transcription from RNA polymerase II promoter by calcium-mediated signaling Calcium-mediated signaling that results in positive regulation of transcription from an RNA polymerase II promoter. signaling functions GO:1901197 positive regulation of calcium-mediated signaling involved in cellular response to calcium ion Any positive regulation of calcium-mediated signaling that is involved in cellular response to calcium ion. signaling functions GO:1901876 regulation of calcium ion binding Any process that modulates the frequency, rate or extent of calcium ion binding. signaling functions GO:1901877 negative regulation of calcium ion binding Any process that stops, prevents or reduces the frequency, rate or extent of calcium ion binding. signaling functions GO:1901878 positive regulation of calcium ion binding Any process that activates or increases the frequency, rate or extent of calcium ion binding. signaling functions GO:1902938 regulation of intracellular calcium activated chloride channel activity Any process that modulates the frequency, rate or extent of intracellular calcium activated chloride channel activity. signaling functions GO:1902939 negative regulation of intracellular calcium activated chloride channel activity Any process that stops, prevents or reduces the frequency, rate or extent of intracellular calcium activated chloride channel activity. signaling functions GO:1902940 positive regulation of intracellular calcium activated chloride channel activity Any process that activates or increases the frequency, rate or extent of intracellular calcium activated chloride channel activity. signaling functions GO:1903233 regulation of calcium ion-dependent exocytosis of neurotransmitter Any process that modulates the frequency, rate or extent of calcium ion-dependent exocytosis of neurotransmitter. signaling functions GO:1903234 negative regulation of calcium ion-dependent exocytosis of neurotransmitter Any process that stops, prevents or reduces the frequency, rate or extent of calcium ion-dependent exocytosis of neurotransmitter. signaling functions GO:1903235 positive regulation of calcium ion-dependent exocytosis of neurotransmitter Any process that activates or increases the frequency, rate or extent of calcium ion-dependent exocytosis of neurotransmitter. signaling functions GO:1903610 regulation of calcium-dependent ATPase activity Any process that modulates the frequency, rate or extent of calcium-dependent ATPase activity. signaling functions GO:1903611 negative regulation of calcium-dependent ATPase activity Any process that stops, prevents or reduces the frequency, rate or extent of calcium-dependent ATPase activity. signaling functions GO:1903612 positive regulation of calcium-dependent ATPase activity Any process that activates or increases the frequency, rate or extent of calcium-dependent ATPase activity. signaling functions GO:1990092 calcium-dependent self proteolysis The sodium-dependent hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their own peptide bonds. signaling functions GO:1990504 dense core granule exocytosis The release of intracellular molecules (e.g. neuropeptides, insulin-related peptides and neuromodulators such as serotonin and dopamine) contained within a membrane-bounced dense core granule by fusion of the granule with the plasma membrane of a cell, requiring the presence of calcium ions.