| 1346928 | PIK3R5 | phosphoinositide-3-kinase regulatory subunit 5 | Phosphatidylinositol 3-kinases (PI3Ks) phosphorylate the inositol ring of phosphatidylinositol at the 3-prime position, and play important roles in cell growth, proliferation, differentiation, motility, survival and intracellular trafficking. The PI3Ks are divided into three classes: I, II and III, and only the class I PI3Ks are involved in oncogenesis. This gene encodes the 101 kD regulatory subunit of the class I PI3K gamma complex, which is a dimeric enzyme, consisting of a 110 kD catalytic subunit gamma and a regulatory subunit of either 55, 87 or 101 kD. This protein recruits the catalytic subunit from the cytosol to the plasma membrane through high-affinity interaction with G-beta-gamma proteins. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been found. [provided by RefSeq, Oct 2011] | 17 | 8878916 | 8965707 | Human | 213 | symbol , COSMIC , Human Proteome Map | gene, protein-coding, REVIEWED [RefSeq] |
| 1563261 | Pik3r5 | phosphoinositide-3-kinase, regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity; G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol metabolic process; G protein-coupled receptor signaling pathway (ortholog); phosphatidylinositol 3-kinase/protein kinase B sig nal transduction (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN phosphatidylinositol 3-kinase complex; centriolar satellite (ortholog); cytoplasm (ortholog); INTERACTS WITH 2,3,7,8-tetrachlorodibenzodioxine; acetamide; alpha-Zearalanol | 10 | 53631469 | 53699550 | Rat | 174 | symbol , PhenoGen | gene, protein-coding, VALIDATED [RefSeq] |
| 1620477 | Pik3r5 | phosphoinositide-3-kinase regulatory subunit 5 | Predicted to enable 1-phosphatidylinositol-3-kinase regulator activity and G-protein beta/gamma-subunit complex binding activity. Predicted to be involved in several processes, including phosphatidylinositol 3-kinase/protein kinase B signal transduction; phosphatidylinositol metabolic process; and p ositive regulation of intracellular signal transduction. Predicted to be located in centriolar satellite; cytosol; and membrane. Predicted to be part of phosphatidylinositol 3-kinase complex, class IA and phosphatidylinositol 3-kinase complex, class IB. Is expressed in brain and retina nuclear layer. Human ortholog(s) of this gene implicated in ataxia with oculomotor apraxia type 3 and colon cancer. Orthologous to human PIK3R5 (phosphoinositide-3-kinase regulatory subunit 5). [provided by Alliance of Genome Resources, Jul 2025] | 11 | 68322951 | 68388675 | Mouse | 180 | symbol , PhenoGen , description | gene, protein-coding, VALIDATED [RefSeq] |
| 8908983 | Pik3r5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN G protein-coupled receptor signaling pathway (ortholog); phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN centriolar satellite (ortholog); cytoplasm (ortholog); cytosol (ortholog) | NW_004955467 | 8025231 | 8091406 | Chinchilla | 24 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 12034823 | PIK3R5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); positi ve regulation of MAP kinase activity (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN membrane (ortholog); phosphatidylinositol 3-kinase complex (ortholog) | 17 | 42686483 | 42773668 | Bonobo | 27 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 12316334 | PIK3R5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); positi ve regulation of MAP kinase activity (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN membrane (ortholog); phosphatidylinositol 3-kinase complex (ortholog) | 5 | 33538354 | 33604984 | Dog | 27 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 12681432 | Pik3r5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); positi ve regulation of MAP kinase activity (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN membrane (ortholog); phosphatidylinositol 3-kinase complex (ortholog) | NW_004936595 | 2029074 | 2053954 | Squirrel | 27 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 625868877 | Pik3r5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN G protein-coupled receptor signaling pathway (ortholog); phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN centriolar satellite (ortholog); cytoplasm (ortholog); cytosol (ortholog) | | | | Black Rat | 24 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 18433519 | PIK3R5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); positi ve regulation of MAP kinase activity (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN membrane (ortholog); phosphatidylinositol 3-kinase complex (ortholog) | | | | Green Monkey | 27 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 155236487 | pik3r5 | | | | | | Tropical Clawed Frog | | symbol | gene, null |
| 18933673 | Pik3r5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity (ortholog); G-protein beta/gamma-subunit complex binding (ortholog); INVOLVED IN phosphatidylinositol 3-kinase/protein kinase B signal transduction (ortholog); phosphatidylinositol metabolic process (ortholog); positi ve regulation of MAP kinase activity (ortholog); PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN centriolar satellite (ortholog); cytosol (ortholog); membrane (ortholog) | | | | Naked Mole-Rat | 28 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 13998950 | PIK3R5 | phosphoinositide-3-kinase regulatory subunit 5 | ENCODES a protein that exhibits 1-phosphatidylinositol-3-kinase regulator activity; G-protein beta/gamma-subunit complex binding; INVOLVED IN G protein-coupled receptor signaling pathway; phosphatidylinositol 3-kinase/protein kinase B signal transduction; positive regulation of MAP kinase activity; PARTICIPATES IN eicosanoid signaling pathway; ephrin - ephrin receptor bidirectional signaling axis; phosphatidylinositol 3-kinase class I signaling pathway; ASSOCIATED WITH ataxia-oculomotor apraxia 3 (ortholog); colon cancer (ortholog); spastic ataxia (ortholog); FOUND IN cytoplasm; membrane; phosphatidylinositol 3-kinase complex, class IB; INTERACTS WITH deoxynivalenol | | | | Pig | 33 | symbol | gene, protein-coding, PROVISIONAL [RefSeq] |
| 155244600 | pik3r5.L | | | | | | African Clawed Frog | | symbol | gene, null |
| 155233996 | pik3r5.S | | | | | | African Clawed Frog | | symbol | gene, null |
| 38670308 | PIK3R5-DT | PIK3R5 divergent transcript | | 17 | 8965847 | 8976986 | Human | | symbol , COSMIC , name , Human Proteome Map | gene, ncrna, VALIDATED [RefSeq] |
| 41374674 | Pik3r5l1 | phosphoinositide-3-kinase, regulatory subunit 5 like 1 | | 10 | 53629997 | 53632820 | Rat | | symbol , old_gene_name , PhenoGen | gene, protein-coding, MODEL [RefSeq] |