'''A-kinase anchor protein 12''' is an [[enzyme]] that in humans is encoded by the ''AKAP12'' [[gene]].<ref name="pmid9000000">{{cite journal | vauthors = Nauert JB, Klauck TM, Langeberg LK, Scott JD | title = Gravin, an autoantigen recognized by serum from myasthenia gravis patients, is a kinase scaffold protein | journal = Curr. Biol. | volume = 7 | issue = 1 | pages = 52–62 | date = Mar 1997 | pmid = 9000000 | pmc = | doi = 10.1016/S0960-9822(06)00027-3 }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: AKAP12 A kinase (PRKA) anchor protein (gravin) 12| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=9590| accessdate = }}</ref>
'''A-kinase anchor protein 12, aka AKAP250,''' is an [[enzyme]] that in humans is encoded by the ''AKAP12'' [[gene]].<ref name="pmid9000000">{{cite journal | vauthors = Nauert JB, Klauck TM, Langeberg LK, Scott JD | title = Gravin, an autoantigen recognized by serum from myasthenia gravis patients, is a kinase scaffold protein | journal = Curr. Biol. | volume = 7 | issue = 1 | pages = 52–62 | date = Mar 1997 | pmid = 9000000 | pmc = | doi = 10.1016/S0960-9822(06)00027-3 }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: AKAP12 A kinase (PRKA) anchor protein (gravin) 12| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=9590| accessdate = }}</ref>
The A-kinase anchor proteins (AKAPs) are a group of structurally diverse proteins, which have the common function of binding to the regulatory subunit of protein kinase A (PKA) and confining the holoenzyme to discrete locations within the cell. This gene encodes a member of the AKAP family. The encoded protein is expressed in endothelial cells, cultured fibroblasts, and osteosarcoma cells. It associates with protein kinase A and C and phosphatase, and serves as a scaffold protein in signal transduction. This protein and RII PKA colocalize at the cell periphery. This protein is a cell growth-related protein. Antibodies to this protein can be produced by patients with myasthenia gravis. Alternative splicing of this gene results in two transcript variants encoding different isoforms.[2]
↑Fan G, Shumay E, Wang H, Malbon CC (Jun 2001). "The scaffold protein gravin (cAMP-dependent protein kinase-anchoring protein 250) binds the beta 2-adrenergic receptor via the receptor cytoplasmic Arg-329 to Leu-413 domain and provides a mobile scaffold during desensitization". J. Biol. Chem. 276 (26): 24005–14. doi:10.1074/jbc.M011199200. PMID11309381.
↑Shih M, Lin F, Scott JD, Wang HY, Malbon CC (Jan 1999). "Dynamic complexes of beta2-adrenergic receptors with protein kinases and phosphatases and the role of gravin". J. Biol. Chem. 274 (3): 1588–95. doi:10.1074/jbc.274.3.1588. PMID9880537.
Yildirim M, Paydas S, Tanriverdi K, Seydaoglu G, Disel U, Yavuz S (2007). "Gravin gene expression in acute leukaemias: clinical importance and review of the literature". Leuk. Lymphoma. 48 (6): 1167–72. doi:10.1080/10428190701377055. PMID17577780.
Sato N, Kokame K, Shimokado K, Kato H, Miyata T (1998). "Changes of gene expression by lysophosphatidylcholine in vascular endothelial cells: 12 up-regulated distinct genes including 5 cell growth-related, 3 thrombosis-related, and 4 others". J. Biochem. 123 (6): 1119–26. doi:10.1093/oxfordjournals.jbchem.a022051. PMID9604001.
Shih M, Lin F, Scott JD, Wang HY, Malbon CC (1999). "Dynamic complexes of beta2-adrenergic receptors with protein kinases and phosphatases and the role of gravin". J. Biol. Chem. 274 (3): 1588–95. doi:10.1074/jbc.274.3.1588. PMID9880537.
Lin F, Wang Hy, Malbon CC (2000). "Gravin-mediated formation of signaling complexes in beta 2-adrenergic receptor desensitization and resensitization". J. Biol. Chem. 275 (25): 19025–34. doi:10.1074/jbc.275.25.19025. PMID10858453.
Fan G, Shumay E, Wang H, Malbon CC (2001). "The scaffold protein gravin (cAMP-dependent protein kinase-anchoring protein 250) binds the beta 2-adrenergic receptor via the receptor cytoplasmic Arg-329 to Leu-413 domain and provides a mobile scaffold during desensitization". J. Biol. Chem. 276 (26): 24005–14. doi:10.1074/jbc.M011199200. PMID11309381.
Grove BD, Bruchey AK (2001). "Intracellular distribution of gravin, a PKA and PKC binding protein, in vascular endothelial cells". J. Vasc. Res. 38 (2): 163–75. doi:10.1159/000051043. PMID11316952.
Sasaki H, Kunimatsu M, Fujii Y, Yamakawa Y, Fukai I, Kiriyama M, Nonaka M, Sasaki M (2001). "Autoantibody to gravin is expressed more strongly in younger and nonthymomatous patients with myasthenia gravis". Surg. Today. 31 (11): 1036–7. doi:10.1007/s005950170020. PMID11766078.
Piontek J, Brandt R (2003). "Differential and regulated binding of cAMP-dependent protein kinase and protein kinase C isoenzymes to gravin in human model neurons: Evidence that gravin provides a dynamic platform for the localization for kinases during neuronal development". J. Biol. Chem. 278 (40): 38970–9. doi:10.1074/jbc.M306749200. PMID12857743.
Choi MC, Jong HS, Kim TY, Song SH, Lee DS, Lee JW, Kim TY, Kim NK, Bang YJ (2004). "AKAP12/Gravin is inactivated by epigenetic mechanism in human gastric carcinoma and shows growth suppressor activity". Oncogene. 23 (42): 7095–103. doi:10.1038/sj.onc.1207932. PMID15258566.
Ballif BA, Villén J, Beausoleil SA, Schwartz D, Gygi SP (2004). "Phosphoproteomic analysis of the developing mouse brain". Mol. Cell. Proteomics. 3 (11): 1093–101. doi:10.1074/mcp.M400085-MCP200. PMID15345747.
Streb JW, Miano JM (2005). "AKAP12alpha, an atypical serum response factor-dependent target gene". J. Biol. Chem. 280 (6): 4125–34. doi:10.1074/jbc.M412466200. PMID15590635.
Streb JW, Miano JM (2005). "Cross-species sequence analysis reveals multiple charged residue-rich domains that regulate nuclear/cytoplasmic partitioning and membrane localization of a kinase anchoring protein 12 (SSeCKS/Gravin)". J. Biol. Chem. 280 (30): 28007–14. doi:10.1074/jbc.M414017200. PMID15923193.