AKT2

AKT2, also known as RAC-beta serine/threonine-protein kinase, is an enzyme that in humans is encoded by the AKT2 gene. It influences metabolite storage as part of the insulin signal transduction pathway.

AKT2
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1GZK, 1GZN, 1GZO, 1MRV, 1MRY, 1O6K, 1O6L, 1P6S, 2JDO, 2JDR, 2UW9, 2X39, 2XH5, 3D0E, 3E87, 3E88, 3E8D
Identifiers
Aliases	AKT2, v-akt murine thymoma viral oncogene homolog 2, HIHGHH, PKBB, PKBBETA, PRKBB, RAC-BETA, AKT serine/threonine kinase 2
External IDs	OMIM: 164731; MGI: 104874; HomoloGene: 48773; GeneCards: AKT2; OMA:AKT2 - orthologs
Gene location (Human) Chr. Chromosome 19 (human) Band 19q13.2 Start 40,230,317 bp End 40,285,536 bp
Gene location (Mouse) Chr. Chromosome 7 (mouse) Band 7 A3|7 15.94 cM Start 27,290,977 bp End 27,340,251 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in right uterine tube right hemisphere of cerebellum right lobe of thyroid gland left lobe of thyroid gland left ovary right ovary body of uterus muscle of thigh canal of the cervix gastrocnemius muscle Top expressed in muscle of thigh choroid plexus of fourth ventricle genital tubercle lip granulocyte ascending aorta aortic valve tail of embryo lactiferous gland yolk sac More reference expression data BioGPS More reference expression data
Gene ontology Molecular function transferase activity nucleotide binding protein kinase activity kinase activity protein serine/threonine kinase activity protein binding ATP binding metal ion binding Cellular component cytoplasm endosome membrane plasma membrane nucleoplasm ruffle membrane cell cortex early endosome nucleus cytosol intracellular membrane-bounded organelle protein-containing complex intracellular anatomical structure Biological process positive regulation of protein targeting to membrane apoptotic process positive regulation of fatty acid beta-oxidation insulin receptor signaling pathway positive regulation of protein phosphorylation intracellular signal transduction regulation of cell migration peripheral nervous system myelin maintenance positive regulation of glycogen biosynthetic process positive regulation of cell motility intracellular protein transmembrane transport activation of GTPase activity phosphorylation positive regulation of glucose metabolic process mammary gland epithelial cell differentiation multicellular organism development protein phosphorylation negative regulation of long-chain fatty acid import across plasma membrane glycogen biosynthetic process positive regulation of vesicle fusion peptidyl-serine phosphorylation glucose metabolic process cellular response to insulin stimulus glycogen metabolic process protein localization to plasma membrane regulation of translation fat cell differentiation signal transduction carbohydrate transport positive regulation of cell migration positive regulation of glucose import cellular response to high light intensity retinal rod cell apoptotic process positive regulation of cell population proliferation positive regulation of mitochondrial membrane potential negative regulation of apoptotic process carbohydrate metabolic process protein kinase B signaling Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 208 11652 Ensembl ENSG00000105221 ENSMUSG00000004056 UniProt P31751 Q60823 RefSeq (mRNA) NM_001243027 NM_001243028 NM_001626 NM_001330511 NM_001110208 NM_007434 NM_001331108 NM_001331109 RefSeq (protein) NP_001229956 NP_001229957 NP_001317440 NP_001617 NP_001103678 NP_001318037 NP_001318038 NP_031460 Location (UCSC) Chr 19: 40.23 – 40.29 Mb Chr 7: 27.29 – 27.34 Mb PubMed search
Wikidata
View/Edit Human View/Edit Mouse

Function

This gene is a putative oncogene encoding a protein belonging to the AKT subfamily of serine/threonine kinases that contain SH2-like (Src homology 2-like) domains. The encoded protein is a general protein kinase capable of phosphorylating several known proteins.

AKT2 has important roles in controlling glycogenesis, gluconeogenesis, and glucose transport as part of the insulin signal transduction pathway.

Clinical significance

The gene was shown to be amplified and overexpressed in 2 of 8 ovarian carcinoma cell lines and 2 of 15 primary ovarian tumors. Overexpression contributes to the malignant phenotype of a subset of human ductal pancreatic cancers.

Mice lacking Akt2 have a normal body mass, but display a profound diabetic phenotype, indicating that Akt2 plays a key role in signal transduction downstream of the insulin receptor. Mice lacking Akt2 show worse outcome in breast cancer initiated by the large T antigen as well as the neu oncogene.

Interactions

AKT2 has been shown to interact with:

• APPL1,
• SH3RF1 and
• TCL1A.

Further reading

• Jones PF, Jakubowicz T, Hemmings BA (1992). "Molecular cloning of a second form of rac protein kinase". Cell Regul. 2 (12): 1001–9. doi:10.1091/mbc.2.12.1001. PMC 361900. PMID 1801921.
• Staal SP (1987). "Molecular cloning of the akt oncogene and its human homologues AKT1 and AKT2: amplification of AKT1 in a primary human gastric adenocarcinoma". Proc. Natl. Acad. Sci. U.S.A. 84 (14): 5034–7. Bibcode:1987PNAS...84.5034S. doi:10.1073/pnas.84.14.5034. PMC 305241. PMID 3037531.
• Cheng JQ, Ruggeri B, Klein WM, Sonoda G, Altomare DA, Watson DK, Testa JR (1996). "Amplification of AKT2 in human pancreatic cells and inhibition of AKT2 expression and tumorigenicity by antisense RNA". Proc. Natl. Acad. Sci. U.S.A. 93 (8): 3636–41. doi:10.1073/pnas.93.8.3636. PMC 39663. PMID 8622988.
• Meier R, Alessi DR, Cron P, Andjelković M, Hemmings BA (1997). "Mitogenic activation, phosphorylation, and nuclear translocation of protein kinase Bbeta". J. Biol. Chem. 272 (48): 30491–7. doi:10.1074/jbc.272.48.30491. PMID 9374542.
• Borgatti P, Zauli G, Colamussi ML, Gibellini D, Previati M, Cantley LL, Capitani S (1998). "Extracellular HIV-1 Tat protein activates phosphatidylinositol 3- and Akt/PKB kinases in CD4+ T lymphoblastoid Jurkat cells". Eur. J. Immunol. 27 (11): 2805–11. doi:10.1002/eji.1830271110. PMID 9394803. S2CID 6303471.
• Walker KS, Deak M, Paterson A, Hudson K, Cohen P, Alessi DR (1998). "Activation of protein kinase B beta and gamma isoforms by insulin in vivo and by 3-phosphoinositide-dependent protein kinase-1 in vitro: comparison with protein kinase B alpha". Biochem. J. 331. ( Pt 1) (Pt 1): 299–308. doi:10.1042/bj3310299. PMC 1219352. PMID 9512493.
• Joel PB, Smith J, Sturgill TW, Fisher TL, Blenis J, Lannigan DA (1998). "pp90rsk1 regulates estrogen receptor-mediated transcription through phosphorylation of Ser-167". Mol. Cell. Biol. 18 (4): 1978–84. doi:10.1128/mcb.18.4.1978. PMC 121427. PMID 9528769.
• Delcommenne M, Tan C, Gray V, Rue L, Woodgett J, Dedhar S (1998). "Phosphoinositide-3-OH kinase-dependent regulation of glycogen synthase kinase 3 and protein kinase B/AKT by the integrin-linked kinase". Proc. Natl. Acad. Sci. U.S.A. 95 (19): 11211–6. Bibcode:1998PNAS...9511211D. doi:10.1073/pnas.95.19.11211. PMC 21621. PMID 9736715.
• Mitsuuchi Y, Johnson SW, Sonoda G, Tanno S, Golemis EA, Testa JR (1999). "Identification of a chromosome 3p14.3-21.1 gene, APPL, encoding an adaptor molecule that interacts with the oncoprotein-serine/threonine kinase AKT2". Oncogene. 18 (35): 4891–8. doi:10.1038/sj.onc.1203080. PMID 10490823.
• Masure S, Haefner B, Wesselink JJ, Hoefnagel E, Mortier E, Verhasselt P, Tuytelaars A, Gordon R, Richardson A (1999). "Molecular cloning, expression and characterization of the human serine/threonine kinase Akt-3". Eur. J. Biochem. 265 (1): 353–60. doi:10.1046/j.1432-1327.1999.00774.x. PMID 10491192.
• Meucci O, Fatatis A, Simen AA, Miller RJ (2000). "Expression of CX3CR1 chemokine receptors on neurons and their role in neuronal survival". Proc. Natl. Acad. Sci. U.S.A. 97 (14): 8075–80. Bibcode:2000PNAS...97.8075M. doi:10.1073/pnas.090017497. PMC 16672. PMID 10869418.
• Laine J, Künstle G, Obata T, Sha M, Noguchi M (2000). "The protooncogene TCL1 is an Akt kinase coactivator". Mol. Cell. 6 (2): 395–407. doi:10.1016/S1097-2765(00)00039-3. PMID 10983986.
• Campbell RA, Bhat-Nakshatri P, Patel NM, Constantinidou D, Ali S, Nakshatri H (2001). "Phosphatidylinositol 3-kinase/AKT-mediated activation of estrogen receptor alpha: a new model for anti-estrogen resistance". J. Biol. Chem. 276 (13): 9817–24. doi:10.1074/jbc.M010840200. hdl:1805/18872. PMID 11139588.
• Zauli G, Milani D, Mirandola P, Mazzoni M, Secchiero P, Miscia S, Capitani S (2001). "HIV-1 Tat protein down-regulates CREB transcription factor expression in PC12 neuronal cells through a phosphatidylinositol 3-kinase/AKT/cyclic nucleoside phosphodiesterase pathway". FASEB J. 15 (2): 483–91. doi:10.1096/fj.00-0354com. PMID 11156964. S2CID 26315564.
• Kapasi AA, Fan S, Singhal PC (2001). "Role of 14-3-3epsilon, c-Myc/Max, and Akt phosphorylation in HIV-1 gp 120-induced mesangial cell proliferation". Am. J. Physiol. Renal Physiol. 280 (2): F333–42. doi:10.1152/ajprenal.2001.280.2.F333. PMID 11208609. S2CID 29992656.
• Matsumoto M, Ogawa W, Hino Y, Furukawa K, Ono Y, Takahashi M, Ohba M, Kuroki T, Kasuga M (2001). "Inhibition of insulin-induced activation of Akt by a kinase-deficient mutant of the epsilon isozyme of protein kinase C." J. Biol. Chem. 276 (17): 14400–6. doi:10.1074/jbc.M011093200. PMID 11278835.
• Brownawell AM, Kops GJ, Macara IG, Burgering BM (2001). "Inhibition of nuclear import by protein kinase B (Akt) regulates the subcellular distribution and activity of the forkhead transcription factor AFX". Mol. Cell. Biol. 21 (10): 3534–46. doi:10.1128/MCB.21.10.3534-3546.2001. PMC 100275. PMID 11313479.
• Clark DE, Poteet-Smith CE, Smith JA, Lannigan DA (2001). "Rsk2 allosterically activates estrogen receptor alpha by docking to the hormone-binding domain". EMBO J. 20 (13): 3484–94. doi:10.1093/emboj/20.13.3484. PMC 125527. PMID 11432835.
• Chen R, Kim O, Yang J, Sato K, Eisenmann KM, McCarthy J, Chen H, Qiu Y (2001). "Regulation of Akt/PKB activation by tyrosine phosphorylation". J. Biol. Chem. 276 (34): 31858–62. doi:10.1074/jbc.C100271200. PMID 11445557.

External links

• Human AKT2 genome location and AKT2 gene details page in the UCSC Genome Browser.
• Overview of all the structural information available in the PDB for UniProt: P31751 (RAC-beta serine/threonine-protein kinase) at the PDBe-KB.