| GOID Link to GO |
Functional Category | Description | Protein Count link to protein list |
|---|---|---|---|
| GO:0030235 | nitric-oxide synthase regulator activity | Modulates the activity of nitric oxide synthase. | 46 |
| GO:0005100 | Rho GTPase activator activity | Increases the rate of GTP hydrolysis by a GTPase of the Rho family. | 41 |
| GO:0004857 | enzyme inhibitor activity | Stops, prevents or reduces the activity of an enzyme. | 36 |
| GO:0008047 | enzyme activator activity | Increases the activity of an enzyme. | 34 |
| GO:0001671 | ATPase activator activity | Functions to increase the rate of ATP hydrolysis. | 26 |
| GO:0004867 | serine-type endopeptidase inhibitor activity | Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme. | 24 |
| GO:0005096 | GTPase activator activity | Increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP. | 22 |
| GO:0005085 | guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 17 |
| GO:0030295 | protein kinase activator activity | Increases the activity of a protein kinase, an enzyme which phosphorylates a protein. | 16 |
| GO:0072542 | protein phosphatase activator activity | Increases the activity of a protein phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a protein substrate molecule. | 14 |
| GO:0043027 | cysteine-type endopeptidase inhibitor activity involved in apoptotic process | Stops, prevents or reduces the activity of a cysteine-type endopeptidase involved in the apoptotic process. | 13 |
| GO:0008601 | protein phosphatase type 2A regulator activity | Modulation of the activity of the enzyme protein phosphatase type 2A. | 11 |
| GO:0005099 | Ras GTPase activator activity | Increases the rate of GTP hydrolysis by a GTPase of the Ras superfamily. | 10 |
| GO:0008060 | ARF GTPase activator activity | Increases the rate of GTP hydrolysis by the GTPase ARF. | 10 |
| GO:0043539 | protein serine/threonine kinase activator activity | Increases the activity of a protein serine/threonine kinase. | 9 |
| GO:0061133 | endopeptidase activator activity | Increases the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides. | 8 |
| GO:0005097 | Rab GTPase activator activity | Increases the rate of GTP hydrolysis by a GTPase of the Rab family. | 8 |
| GO:0004860 | protein kinase inhibitor activity | Stops, prevents or reduces the activity of a protein kinase, an enzyme which phosphorylates a protein. | 8 |
| GO:0005089 | Rho guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rho family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 8 |
| GO:0019208 | phosphatase regulator activity | Modulates the activity of a phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a substrate molecule. | 8 |
| GO:0017112 | Rab guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rab family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 7 |
| GO:0016538 | cyclin-dependent protein serine/threonine kinase regulator activity | Modulates the activity of a cyclin-dependent protein serine/threonine kinase, enzymes of the protein kinase family that are regulated through association with cyclins and other proteins. | 7 |
| GO:0008603 | cAMP-dependent protein kinase regulator activity | Modulation of the activity of the enzyme cAMP-dependent protein kinase. | 7 |
| GO:0005088 | Ras guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 7 |
| GO:0030675 | Rac GTPase activator activity | Increases the rate of GTP hydrolysis by a GTPase of the Rac family. | 7 |
| GO:0016004 | phospholipase activator activity | Increases the activity of a phospholipase, an enzyme that catalyzes of the hydrolysis of a glycerophospholipid. | 6 |
| GO:0019210 | kinase inhibitor activity | Stops, prevents or reduces the activity of a kinase, an enzyme which catalyzes of the transfer of a phosphate group, usually from ATP, to a substrate molecule. | 5 |
| GO:0008426 | protein kinase C inhibitor activity | Stops, prevents or reduces the activity of protein kinase C, an enzyme which phosphorylates a protein. | 5 |
| GO:0005083 | small GTPase regulator activity | Modulates the rate of GTP hydrolysis by a small monomeric GTPase. | 5 |
| GO:0030296 | protein tyrosine kinase activator activity | Increases the activity of a protein tyrosine kinase, an enzyme which phosphorylates a tyrosyl phenolic group on a protein. | 5 |
| GO:0008048 | calcium sensitive guanylate cyclase activator activity | Increases the activity of guanylate cyclase in response to a change in calcium ion concentration. | 5 |
| GO:0008656 | cysteine-type endopeptidase activator activity involved in apoptotic process | Increases the rate of proteolysis catalyzed by a cysteine-type endopeptidase involved in the apoptotic process. | 5 |
| GO:0004866 | endopeptidase inhibitor activity | Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides. | 5 |
| GO:0016504 | peptidase activator activity | Increases the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds. | 4 |
| GO:0005086 | ARF guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with the GTPase ARF. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 4 |
| GO:0046582 | Rap GTPase activator activity | Increases the rate of GTP hydrolysis by a GTPase of the Rap family. | 4 |
| GO:0016505 | apoptotic protease activator activity | Increases the activity of a peptidase that is involved in the activation of apoptosis. | 4 |
| GO:0019887 | protein kinase regulator activity | Modulates the activity of a protein kinase, an enzyme which phosphorylates a protein. | 4 |
| GO:0017034 | Rap guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rap family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 4 |
| GO:0005095 | GTPase inhibitor activity | Stops, prevents or reduces the activity of any enzyme that catalyzes the hydrolysis of GTP to GDP and orthophosphate. | 4 |
| GO:0004869 | cysteine-type endopeptidase inhibitor activity | Stops, prevents or reduces the activity of a 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. | 4 |
| GO:0030695 | GTPase regulator activity | Modulates the rate of GTP hydrolysis by a GTPase. | 3 |
| GO:0008597 | calcium-dependent protein serine/threonine phosphatase regulator activity | Modulation of the activity of the enzyme calcium-dependent protein serine/threonine phosphatase. | 3 |
| GO:0019212 | phosphatase inhibitor activity | Stops, prevents or reduces the activity of a phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a substrate molecule. | 3 |
| GO:0019207 | kinase regulator activity | Modulates the activity of a kinase, an enzyme which catalyzes of the transfer of a phosphate group, usually from ATP, to a substrate molecule. | 3 |
| GO:0055106 | ubiquitin-protein ligase regulator activity | Modulates the activity of a ubiquitin-protein ligase, an enzyme that catalyzes the covalent attachment of ubiquitin to lysine in a substrate protein. | 3 |
| GO:0019888 | protein phosphatase regulator activity | Modulates the activity of a protein phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a protein substrate molecule. | 3 |
| GO:0019209 | kinase activator activity | Increases the activity of a kinase, an enzyme which catalyzes of the transfer of a phosphate group, usually from ATP, to a substrate molecule. | 3 |
| GO:0005092 | GDP-dissociation inhibitor activity | Prevents the dissociation of GDP from a GTPase, thereby preventing GTP from binding. | 3 |
| GO:0016534 | cyclin-dependent protein kinase 5 activator activity | Increases the activity of cyclin-dependent protein kinase 5. | 2 |
| GO:0008160 | protein tyrosine phosphatase activator activity | Increases the activity of a phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a tyrosyl phenolic group of a protein. | 2 |
| GO:0005087 | Ran guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ran family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 2 |
| GO:0035800 | ubiquitin-specific protease activator activity | Increases the activity of a ubiquitin-specific protease, an enzyme that catalyzes the hydrolysis of various forms of polymeric ubiquitin sequences. | 2 |
| GO:0030292 | protein tyrosine kinase inhibitor activity | Stops, prevents or reduces the activity of a protein tyrosine kinase. | 2 |
| GO:0004861 | cyclin-dependent protein serine/threonine kinase inhibitor activity | Stops, prevents or reduces the activity of a cyclin-dependent protein serine/threonine kinase. | 2 |
| GO:0046935 | 1-phosphatidylinositol-3-kinase regulator activity | Modulates the activity of the enzyme 1-phosphatidylinositol-3-kinase activity. | 2 |
| GO:0030291 | protein serine/threonine kinase inhibitor activity | Stops, prevents or reduces the activity of a protein serine/threonine kinase. | 2 |
| GO:0035033 | histone deacetylase regulator activity | Modulates the activity of histone deacetylase. | 2 |
| GO:0017020 | myosin phosphatase regulator activity | Modulation of the activity of the enzyme myosin phosphatase. | 2 |
| GO:0008607 | phosphorylase kinase regulator activity | Modulation of the activity of the enzyme phosphorylase kinase. | 2 |
| GO:0004864 | protein phosphatase inhibitor activity | Stops, prevents or reduces the activity of a protein phosphatase, an enzyme that hydrolyzes phosphate groups from phosphorylated proteins. | 2 |
| GO:0008427 | calcium-dependent protein kinase inhibitor activity | Stops, prevents or reduces the activity of a calcium-dependent protein kinase. | 2 |
| GO:0019834 | phospholipase A2 inhibitor activity | Stops, prevents or reduces the activity of the enzyme phospholipase A2. | 2 |
| GO:0008599 | protein phosphatase type 1 regulator activity | Modulation of the activity of the enzyme protein phosphatase type 1. | 1 |
| GO:0097027 | ubiquitin-protein ligase activator activity | Increases the activity of a ubiquitin-protein ligase, an enzyme that catalyzes the covalent attachment of ubiquitin to lysine in a substrate protein. | 1 |
| GO:0035014 | phosphatidylinositol 3-kinase regulator activity | Modulates the activity of any of the phosphatidylinositol 3-kinases (PI3Ks). Regulatory subunits can link a PI3K catalytic subunit to upstream signaling events and help position the catalytic subunits close to their lipid substrates. | 1 |
| GO:0030676 | Rac guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rac family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 1 |
| GO:0042030 | ATPase inhibitor activity | Stops, prevents or reduces the activity of any enzyme that catalyzes the hydrolysis of ATP to ADP and orthophosphate. | 1 |
| GO:0005093 | Rab GDP-dissociation inhibitor activity | Prevents the dissociation of GDP from the small GTPase Rab, thereby preventing GTP from binding. | 1 |
| GO:0060308 | GTP cyclohydrolase I regulator activity | Modulates the activity of GTP cyclohydrolase I. GTP cyclohydrolase I activity catalyzes the reaction: GTP + 2 H2O = formate + 2-amino-4-hydroxy-6-(erythro-1,2,3-trihydroxypropyl)-dihydropteridine triphosphate. | 1 |
| GO:0008321 | Ral guanyl-nucleotide exchange factor activity | Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ral family. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase. | 1 |
| GO:0008428 | ribonuclease inhibitor activity | Stops, prevents or reduces the activity of a ribonuclease, any enzyme that catalyzes the hydrolysis of phosphodiester bonds in chains of RNA. | 1 |
| GO:0004862 | cAMP-dependent protein kinase inhibitor activity | Stops, prevents or reduces the activity of a cAMP-dependent protein kinase. | 1 |
| GO:0030414 | peptidase inhibitor activity | Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds. | 1 |
| GO:0060589 | nucleoside-triphosphatase regulator activity | Modulates the rate of NTP hydrolysis by a NTPase. | 1 |
| GO:0005094 | Rho GDP-dissociation inhibitor activity | Prevents the dissociation of GDP from the small GTPase Rho, thereby preventing GTP from binding. | 1 |
| GO:0016483 | tryptophan hydroxylase activator activity | Increases the activity of the enzyme tryptophase hydroxylase. | 1 |
| GO:0030337 | DNA polymerase processivity factor activity | An enzyme regulator activity that increases the processivity of polymerization by DNA polymerase, by allowing the polymerase to move rapidly along DNA while remaining topologically bound to it. | 1 |