PIK3R2

PIK3R2
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	2KT1, 2XS6, 3MTT, 3O5Z
Identifiers
Aliases	PIK3R2, MPPH, MPPH1, P85B, p85, p85-BETA, phosphoinositide-3-kinase regulatory subunit 2
External IDs	OMIM: 603157; MGI: 1098772; HomoloGene: 3687; GeneCards: PIK3R2; OMA:PIK3R2 - orthologs
Gene location (Mouse)
Chr.	Chromosome 8 (mouse)
End	71,229,357 bp
RNA expression pattern
	Top expressed in
	ganglionic eminence; ; stromal cell of endometrium; ; prefrontal cortex; ; hippocampus proper; ; superior frontal gyrus; ; left adrenal gland; ; nucleus accumbens; ; temporal lobe; ; amygdala; ; caudate nucleus;
	Top expressed in
	primary visual cortex; ; striatum of neuraxis; ; superior frontal gyrus; ; hippocampus proper; ; olfactory bulb; ; cerebellum; ; ganglionic eminence; ; lip; ; dentate gyrus of hippocampal formation granule cell; ; cerebellar cortex;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	phosphatidylinositol 3-kinase regulator activity; receptor tyrosine kinase binding; 1-phosphatidylinositol-3-kinase regulator activity; protein binding; protein heterodimerization activity; protein phosphatase binding; GTPase activator activity; phosphatidylinositol-4,5-bisphosphate 3-kinase activity; phosphotyrosine residue binding; 1-phosphatidylinositol-3-kinase activity;
Cellular component	cytosol; phosphatidylinositol 3-kinase complex; nucleus;
Biological process	Fc-gamma receptor signaling pathway involved in phagocytosis; cellular glucose homeostasis; response to endoplasmic reticulum stress; Fc-epsilon receptor signaling pathway; phosphatidylinositol phosphate biosynthetic process; vascular endothelial growth factor receptor signaling pathway; regulation of autophagy; regulation of phosphatidylinositol 3-kinase activity; cellular response to insulin stimulus; protein transport; phosphatidylinositol 3-kinase signaling; T cell receptor signaling pathway; regulation of small GTPase mediated signal transduction; phosphatidylinositol-mediated signaling; leukocyte migration; positive regulation of transcription by RNA polymerase II; signal transduction; insulin receptor signaling pathway; positive regulation of GTPase activity; phosphatidylinositol-3-phosphate biosynthetic process; negative regulation of MAPK cascade; positive regulation of protein kinase B signaling; positive regulation of protein import into nucleus; phosphatidylinositol biosynthetic process;
	Sources:Amigo / QuickGO
Orthologs
	5296
	18709
	n/a
	ENSMUSG00000031834
	O00459
	O08908
	NM_005027
	NM_008841
	NP_005018
	NP_032867
	Wikidata
View/Edit Human	View/Edit Mouse

Phosphatidylinositol 3-kinase regulatory subunit beta is an enzyme that in humans is encoded by the PIK3R2 gene.^[4]^[5]

A recent study on gene expression indicated that the PIK3R2 gene might have a key role in pan-cancer prognosis.^[6]

Interactions

PIK3R2 has been shown to interact with:

CRKL^[7]
Cbl gene,^[8]^[9]
Epidermal growth factor,^[10]
FYN,^[10]
HER2/neu,^[10]
Macrophage colony-stimulating factor,^[10] and
PIK3CD.^[11]

Clinical relevance

PIK3R2 mutations were recently shown to be associated with polymicrogyria.^[12]

References

^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000031834 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Volinia S, Patracchini P, Otsu M, Hiles I, Gout I, Calzolari E, et al. (April 1992). "Chromosomal localization of human p85 alpha, a subunit of phosphatidylinositol 3-kinase, and its homologue p85 beta". Oncogene. 7 (4): 789–793. PMID 1314371.
^ "Entrez Gene: PIK3R2 phosphoinositide-3-kinase, regulatory subunit 2 (p85 beta)".
^ Chicco D, Alameer A, Rahmati S, Jurman G (November 2022). "Towards a potential pan-cancer prognostic signature for gene expression based on probesets and ensemble machine learning". BioData Mining. 15 (1): 28. doi:10.1186/s13040-022-00312-y. eISSN 1756-0381. PMC 9632055. PMID 36329531.
^ Sattler M, Salgia R, Shrikhande G, Verma S, Pisick E, Prasad KV, Griffin JD (April 1997). "Steel factor induces tyrosine phosphorylation of CRKL and binding of CRKL to a complex containing c-kit, phosphatidylinositol 3-kinase, and p120(CBL)". The Journal of Biological Chemistry. 272 (15): 10248–10253. doi:10.1074/jbc.272.15.10248. PMID 9092574.
^ Lin H, Martelli MP, Bierer BE (January 2001). "The involvement of the proto-oncogene p120 c-Cbl and ZAP-70 in CD2-mediated T cell activation". International Immunology. 13 (1): 13–22. doi:10.1093/intimm/13.1.13. PMID 11133830.
^ Hartley D, Meisner H, Corvera S (August 1995). "Specific association of the beta isoform of the p85 subunit of phosphatidylinositol-3 kinase with the proto-oncogene c-cbl". The Journal of Biological Chemistry. 270 (31): 18260–18263. doi:10.1074/jbc.270.31.18260. PMID 7629144.
^ ^a ^b ^c ^d Gout I, Dhand R, Panayotou G, Fry MJ, Hiles I, Otsu M, Waterfield MD (December 1992). "Expression and characterization of the p85 subunit of the phosphatidylinositol 3-kinase complex and a related p85 beta protein by using the baculovirus expression system". The Biochemical Journal. 288 ( Pt 2) (2): 395–405. doi:10.1042/bj2880395. PMC 1132024. PMID 1334406.
^ Vanhaesebroeck B, Welham MJ, Kotani K, Stein R, Warne PH, Zvelebil MJ, et al. (April 1997). "P110delta, a novel phosphoinositide 3-kinase in leukocytes". Proceedings of the National Academy of Sciences of the United States of America. 94 (9): 4330–4335. Bibcode:1997PNAS...94.4330V. doi:10.1073/pnas.94.9.4330. PMC 20722. PMID 9113989.
^ Mirzaa GM, Conti V, Timms AE, Smyser CD, Ahmed S, Carter M, et al. (December 2015). "Characterisation of mutations of the phosphoinositide-3-kinase regulatory subunit, PIK3R2, in perisylvian polymicrogyria: a next-generation sequencing study". The Lancet. Neurology. 14 (12): 1182–1195. doi:10.1016/S1474-4422(15)00278-1. PMC 4672724. PMID 26520804.

Lee C, Liu QH, Tomkowicz B, Yi Y, Freedman BD, Collman RG (November 2003). "Macrophage activation through CCR5- and CXCR4-mediated gp120-elicited signaling pathways". Journal of Leukocyte Biology. 74 (5): 676–682. doi:10.1189/jlb.0503206. PMID 12960231. S2CID 11362623.
Gout I, Dhand R, Panayotou G, Fry MJ, Hiles I, Otsu M, Waterfield MD (December 1992). "Expression and characterization of the p85 subunit of the phosphatidylinositol 3-kinase complex and a related p85 beta protein by using the baculovirus expression system". The Biochemical Journal. 288 ( Pt 2) (2): 395–405. doi:10.1042/bj2880395. PMC 1132024. PMID 1334406.
Carpenter CL, Duckworth BC, Auger KR, Cohen B, Schaffhausen BS, Cantley LC (November 1990). "Purification and characterization of phosphoinositide 3-kinase from rat liver". The Journal of Biological Chemistry. 265 (32): 19704–19711. doi:10.1016/S0021-9258(17)45429-9. PMID 2174051.
Truitt KE, Hicks CM, Imboden JB (March 1994). "Stimulation of CD28 triggers an association between CD28 and phosphatidylinositol 3-kinase in Jurkat T cells". The Journal of Experimental Medicine. 179 (3): 1071–1076. doi:10.1084/jem.179.3.1071. PMC 2191424. PMID 7509360.
Herbst R, Shearman MS, Jallal B, Schlessinger J, Ullrich A (May 1995). "Formation of signal transfer complexes between stem cell and platelet-derived growth factor receptors and SH2 domain proteins in vitro". Biochemistry. 34 (17): 5971–5979. doi:10.1021/bi00017a026. PMID 7537096.
Craparo A, O'Neill TJ, Gustafson TA (June 1995). "Non-SH2 domains within insulin receptor substrate-1 and SHC mediate their phosphotyrosine-dependent interaction with the NPEY motif of the insulin-like growth factor I receptor". The Journal of Biological Chemistry. 270 (26): 15639–15643. doi:10.1074/jbc.270.26.15639. PMID 7541045.
He W, O'Neill TJ, Gustafson TA (October 1995). "Distinct modes of interaction of SHC and insulin receptor substrate-1 with the insulin receptor NPEY region via non-SH2 domains". The Journal of Biological Chemistry. 270 (40): 23258–23262. doi:10.1074/jbc.270.40.23258. PMID 7559478.
Kapeller R, Toker A, Cantley LC, Carpenter CL (October 1995). "Phosphoinositide 3-kinase binds constitutively to alpha/beta-tubulin and binds to gamma-tubulin in response to insulin". The Journal of Biological Chemistry. 270 (43): 25985–25991. doi:10.1074/jbc.270.43.25985. PMID 7592789.
Hartley D, Meisner H, Corvera S (August 1995). "Specific association of the beta isoform of the p85 subunit of phosphatidylinositol-3 kinase with the proto-oncogene c-cbl". The Journal of Biological Chemistry. 270 (31): 18260–18263. doi:10.1074/jbc.270.31.18260. PMID 7629144.
Pandey A, Lazar DF, Saltiel AR, Dixit VM (December 1994). "Activation of the Eck receptor protein tyrosine kinase stimulates phosphatidylinositol 3-kinase activity". The Journal of Biological Chemistry. 269 (48): 30154–30157. doi:10.1016/S0021-9258(18)43790-8. PMID 7982920.
August A, Dupont B (May 1994). "CD28 of T lymphocytes associates with phosphatidylinositol 3-kinase". International Immunology. 6 (5): 769–774. doi:10.1093/intimm/6.5.769. PMID 8080844.
Fukazawa T, Miyake S, Band V, Band H (June 1996). "Tyrosine phosphorylation of Cbl upon epidermal growth factor (EGF) stimulation and its association with EGF receptor and downstream signaling proteins". The Journal of Biological Chemistry. 271 (24): 14554–14559. doi:10.1074/jbc.271.24.14554. PMID 8662998.
Milani D, Mazzoni M, Borgatti P, Zauli G, Cantley L, Capitani S (September 1996). "Extracellular human immunodeficiency virus type-1 Tat protein activates phosphatidylinositol 3-kinase in PC12 neuronal cells". The Journal of Biological Chemistry. 271 (38): 22961–22964. doi:10.1074/jbc.271.38.22961. PMID 8798481.
Sattler M, Salgia R, Shrikhande G, Verma S, Pisick E, Prasad KV, Griffin JD (April 1997). "Steel factor induces tyrosine phosphorylation of CRKL and binding of CRKL to a complex containing c-kit, phosphatidylinositol 3-kinase, and p120(CBL)". The Journal of Biological Chemistry. 272 (15): 10248–10253. doi:10.1074/jbc.272.15.10248. PMID 9092574.
Vanhaesebroeck B, Welham MJ, Kotani K, Stein R, Warne PH, Zvelebil MJ, et al. (April 1997). "P110delta, a novel phosphoinositide 3-kinase in leukocytes". Proceedings of the National Academy of Sciences of the United States of America. 94 (9): 4330–4335. Bibcode:1997PNAS...94.4330V. doi:10.1073/pnas.94.9.4330. PMC 20722. PMID 9113989.
Briand G, Barbeau B, Tremblay M (February 1997). "Binding of HIV-1 to its receptor induces tyrosine phosphorylation of several CD4-associated proteins, including the phosphatidylinositol 3-kinase". Virology. 228 (2): 171–179. doi:10.1006/viro.1996.8399. PMID 9123823.
Braunger J, Schleithoff L, Schulz AS, Kessler H, Lammers R, Ullrich A, et al. (June 1997). "Intracellular signaling of the Ufo/Axl receptor tyrosine kinase is mediated mainly by a multi-substrate docking-site". Oncogene. 14 (22): 2619–2631. doi:10.1038/sj.onc.1201123. PMID 9178760.
Shepherd PR, Navé BT, Rincon J, Nolte LA, Bevan AP, Siddle K, et al. (July 1997). "Differential regulation of phosphoinositide 3-kinase adapter subunit variants by insulin in human skeletal muscle". The Journal of Biological Chemistry. 272 (30): 19000–19007. doi:10.1074/jbc.272.30.19000. PMID 9228082.
Mazerolles F, Barbat C, Fischer A (September 1997). "Down-regulation of LFA-1-mediated T cell adhesion induced by the HIV envelope glycoprotein gp160 requires phosphatidylinositol-3-kinase activity". European Journal of Immunology. 27 (9): 2457–2465. doi:10.1002/eji.1830270946. PMID 9341793. S2CID 33397908.

[refGRCm38Ensembl-1] GRCm38: Ensembl release 89: ENSMUSG00000031834 – Ensembl, May 2017

[2] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[3] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid1314371-4] Volinia S, Patracchini P, Otsu M, Hiles I, Gout I, Calzolari E, et al. (April 1992). "Chromosomal localization of human p85 alpha, a subunit of phosphatidylinositol 3-kinase, and its homologue p85 beta". Oncogene. 7 (4): 789–793. PMID 1314371.

[5] "Entrez Gene: PIK3R2 phosphoinositide-3-kinase, regulatory subunit 2 (p85 beta)".

[ChiccoAlameerRahmati2022-6] Chicco D, Alameer A, Rahmati S, Jurman G (November 2022). "Towards a potential pan-cancer prognostic signature for gene expression based on probesets and ensemble machine learning". BioData Mining. 15 (1): 28. doi:10.1186/s13040-022-00312-y. eISSN 1756-0381. PMC 9632055. PMID 36329531.

[pmid9092574-7] Sattler M, Salgia R, Shrikhande G, Verma S, Pisick E, Prasad KV, Griffin JD (April 1997). "Steel factor induces tyrosine phosphorylation of CRKL and binding of CRKL to a complex containing c-kit, phosphatidylinositol 3-kinase, and p120(CBL)". The Journal of Biological Chemistry. 272 (15): 10248–10253. doi:10.1074/jbc.272.15.10248. PMID 9092574.

[pmid11133830-8] Lin H, Martelli MP, Bierer BE (January 2001). "The involvement of the proto-oncogene p120 c-Cbl and ZAP-70 in CD2-mediated T cell activation". International Immunology. 13 (1): 13–22. doi:10.1093/intimm/13.1.13. PMID 11133830.

[pmid7629144-9] Hartley D, Meisner H, Corvera S (August 1995). "Specific association of the beta isoform of the p85 subunit of phosphatidylinositol-3 kinase with the proto-oncogene c-cbl". The Journal of Biological Chemistry. 270 (31): 18260–18263. doi:10.1074/jbc.270.31.18260. PMID 7629144.

[pmid1334406-10] Gout I, Dhand R, Panayotou G, Fry MJ, Hiles I, Otsu M, Waterfield MD (December 1992). "Expression and characterization of the p85 subunit of the phosphatidylinositol 3-kinase complex and a related p85 beta protein by using the baculovirus expression system". The Biochemical Journal. 288 ( Pt 2) (2): 395–405. doi:10.1042/bj2880395. PMC 1132024. PMID 1334406.

[pmid9113989-11] Vanhaesebroeck B, Welham MJ, Kotani K, Stein R, Warne PH, Zvelebil MJ, et al. (April 1997). "P110delta, a novel phosphoinositide 3-kinase in leukocytes". Proceedings of the National Academy of Sciences of the United States of America. 94 (9): 4330–4335. Bibcode:1997PNAS...94.4330V. doi:10.1073/pnas.94.9.4330. PMC 20722. PMID 9113989.

[12] Mirzaa GM, Conti V, Timms AE, Smyser CD, Ahmed S, Carter M, et al. (December 2015). "Characterisation of mutations of the phosphoinositide-3-kinase regulatory subunit, PIK3R2, in perisylvian polymicrogyria: a next-generation sequencing study". The Lancet. Neurology. 14 (12): 1182–1195. doi:10.1016/S1474-4422(15)00278-1. PMC 4672724. PMID 26520804.

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Interactions

Clinical relevance

References

Further reading