S100 calcium-binding protein A6 (S100A6) is a protein that in humans is encoded by the S100A6gene.[5]
Function
The protein encoded by this gene is a member of the S100 family of proteins containing 2 EF-hand calcium-binding motifs. S100 proteins are localized in the cytoplasm and/or nucleus of a wide range of cells, and involved in the regulation of a number of cellular processes such as cell cycle progression and differentiation. S100 genes include at least 13 members which are located as a cluster on chromosome 1q21. This protein may function in stimulation of Ca2+-dependent insulin release, stimulation of prolactin secretion, and exocytosis. Chromosomal rearrangements and altered expression of this gene have been implicated in melanoma.[5]
^Yang Q, O'Hanlon D, Heizmann CW, Marks A (February 1999). "Demonstration of heterodimer formation between S100B and S100A6 in the yeast two-hybrid system and human melanoma". Exp. Cell Res. 246 (2): 501–9. doi:10.1006/excr.1998.4314. PMID9925766.
^Sofiadis A, Dinets A, Orre LM, Branca RM, Juhlin CC, Foukakis T, Wallin G, Höög A, Hulchiy M, Zedenius J, Larsson C, Lehtiö J (October 2010). "Proteomic study of thyroid tumors reveals frequent up-regulation of the Ca2+ -binding protein S100A6 in papillary thyroid carcinoma". Thyroid. 20 (10): 1067–76. doi:10.1089/thy.2009.0400. PMID20629554.
Further reading
Schäfer BW, Heizmann CW (1996). "The S100 family of EF-hand calcium-binding proteins: functions and pathology". Trends Biochem. Sci. 21 (4): 134–40. doi:10.1016/S0968-0004(96)80167-8. PMID8701470.
Engelkamp D, Schäfer BW, Erne P, Heizmann CW (1992). "S100 alpha, CAPL, and CACY: molecular cloning and expression analysis of three calcium-binding proteins from human heart". Biochemistry. 31 (42): 10258–64. doi:10.1021/bi00157a012. PMID1384693.
Tomida Y, Terasawa M, Kobayashi R, Hidaka H (1992). "Calcyclin and calvasculin exist in human platelets". Biochem. Biophys. Res. Commun. 189 (3): 1310–6. doi:10.1016/0006-291X(92)90216-8. PMID1482346.
Filipek A, Gerke V, Weber K, Kuźnicki J (1991). "Characterization of the cell-cycle-regulated protein calcyclin from Ehrlich ascites tumor cells. Identification of two binding proteins obtained by Ca2(+)-dependent affinity chromatography". Eur. J. Biochem. 195 (3): 795–800. doi:10.1111/j.1432-1033.1991.tb15768.x. PMID1999197.
Gabius HJ, Bardosi A, Gabius S, Hellmann KP, Karas M, Kratzin H (1989). "Identification of a cell cycle-dependent gene product as a sialic acid-binding protein". Biochem. Biophys. Res. Commun. 163 (1): 506–12. doi:10.1016/0006-291X(89)92166-9. PMID2775283.
Schäfer BW, Wicki R, Engelkamp D, Mattei MG, Heizmann CW (1995). "Isolation of a YAC clone covering a cluster of nine S100 genes on human chromosome 1q21: rationale for a new nomenclature of the S100 calcium-binding protein family". Genomics. 25 (3): 638–43. doi:10.1016/0888-7543(95)80005-7. PMID7759097.
Kordowska J, Stafford WF, Wang CL (1998). "Ca2+ and Zn2+ bind to different sites and induce different conformational changes in human calcyclin". Eur. J. Biochem. 253 (1): 57–66. doi:10.1046/j.1432-1327.1998.2530057.x. PMID9578461.
Yang Q, O'Hanlon D, Heizmann CW, Marks A (1999). "Demonstration of heterodimer formation between S100B and S100A6 in the yeast two-hybrid system and human melanoma". Exp. Cell Res. 246 (2): 501–9. doi:10.1006/excr.1998.4314. PMID9925766.
Otterbein LR, Kordowska J, Witte-Hoffmann C, Wang CL, Dominguez R (2002). "Crystal structures of S100A6 in the Ca(2+)-free and Ca(2+)-bound states: the calcium sensor mechanism of S100 proteins revealed at atomic resolution". Structure. 10 (4): 557–67. doi:10.1016/S0969-2126(02)00740-2. PMID11937060.