STE20-related kinase adapter protein beta is an enzyme that in humans is encoded by the STRADBgene.[1][2][3]
This gene encodes a protein that belongs to the serine/threonine protein kinase STE20 subfamily. One of the active site residues in the protein kinase domain of this protein is altered, and it is thus a pseudokinase. This protein is a component of a complex involved in the activation of serine/threonine kinase 11, a master kinase that regulates cell polarity and energy-generating metabolism. This complex regulates the relocation of this kinase from the nucleus to the cytoplasm, and it is essential for G1 cell cycle arrest mediated by this kinase. The protein encoded by this gene can also interact with the X chromosome-linked inhibitor of apoptosis protein, and this interaction enhances the anti-apoptotic activity of this protein via the JNK1 signal transduction pathway. Two pseudogenes, located on chromosomes 1 and 7, have been found for this gene.[3]
↑Sanna, M Germana; da Silva Correia Jean; Luo Ying; Chuang Betty; Paulson Lorien M; Nguyen Binh; Deveraux Quinn L; Ulevitch Richard J (Aug 2002). "ILPIP, a novel anti-apoptotic protein that enhances XIAP-mediated activation of JNK1 and protection against apoptosis". J. Biol. Chem. United States. 277 (34): 30454–62. doi:10.1074/jbc.M203312200. ISSN0021-9258. PMID12048196.
Sanna MG, da Silva Correia J, Luo Y, et al. (2002). "ILPIP, a novel anti-apoptotic protein that enhances XIAP-mediated activation of JNK1 and protection against apoptosis". J. Biol. Chem. 277 (34): 30454–62. doi:10.1074/jbc.M203312200. PMID12048196.
Nishigaki K, Thompson D, Yugawa T, et al. (2003). "Identification and characterization of a novel Ste20/germinal center kinase-related kinase, polyploidy-associated protein kinase". J. Biol. Chem. 278 (15): 13520–30. doi:10.1074/jbc.M208601200. PMID12574163.
Brajenovic M, Joberty G, Küster B, et al. (2004). "Comprehensive proteomic analysis of human Par protein complexes reveals an interconnected protein network". J. Biol. Chem. 279 (13): 12804–11. doi:10.1074/jbc.M312171200. PMID14676191.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.