STEAP family member 4 is a protein that in humans is encoded by the STEAP4 gene.[1]
Function
The protein encoded by this gene belongs to the STEAP (six transmembrane epithelial antigen of prostate) family, and resides in the golgi apparatus. It functions as a metalloreductase that has the ability to reduce both Fe(3+) to Fe(2+) and Cu(2+) to Cu(1+), using NAD(+) as acceptor. Studies in mice and human suggest that this gene may be involved in adipocyte development and metabolism, and may contribute to the normal biology of the prostate cell, as well as prostate cancer progression. Alternatively spliced transcript variants encoding different isoforms have been found for this gene
Zhang CM, Chi X, Wang B, Zhang M, Ni YH, Chen RH, Li XN, Guo XR (May 2008). "Downregulation of STEAP4, a highly-expressed TNF-alpha-inducible gene in adipose tissue, is associated with obesity in humans". Acta Pharmacologica Sinica. 29 (5): 587–92. doi:10.1111/j.1745-7254.2008.00793.x. PMID18430367.
Bi YW, Wang CM, Yan ZT, Li NF, Guo YY, Wang HM, Yao XG, Liang DP (February 2011). "[Negative association of STAMP2 gene polymorphisms with essential hypertension in Xinjiang Uygur population]". Zhonghua Yi Xue Yi Chuan Xue Za Zhi = Zhonghua Yixue Yichuanxue Zazhi = Chinese Journal of Medical Genetics. 28 (1): 64–8. doi:10.3760/cma.j.issn.1003-9406.2011.01.015. PMID21287513.
Kralisch S, Sommer G, Weise S, Lipfert J, Lossner U, Kamprad M, Schröck K, Bluher M, Stumvoll M, Fasshauer M (April 2009). "Interleukin-1beta is a positive regulator of TIARP/STAMP2 gene and protein expression in adipocytes in vitro". FEBS Letters. 583 (7): 1196–200. doi:10.1016/j.febslet.2009.03.015. PMID19289123.
Guo YY, Li NF, Wang CM, Yan ZT, Zhang JH, Wang HM, Zhou L, Luo WL (February 2011). "[Genetic variation and association of STEAP4 gene with metabolic syndrome in Chinese Uygur patients]". Zhonghua Yi Xue Yi Chuan Xue Za Zhi = Zhonghua Yixue Yichuanxue Zazhi = Chinese Journal of Medical Genetics. 28 (1): 78–82. doi:10.3760/cma.j.issn.1003-9406.2011.01.018. PMID21287516.
Nanfang L, Yanying G, Hongmei W, Zhitao Y, Juhong Z, Ling Z, Wenli L (August 2010). "Variations of six transmembrane epithelial antigen of prostate 4 (STEAP4) gene are associated with metabolic syndrome in a female Uygur general population". Archives of Medical Research. 41 (6): 449–56. doi:10.1016/j.arcmed.2010.08.006. PMID21044749.
Tanaka Y, Matsumoto I, Iwanami K, Inoue A, Minami R, Umeda N, Kanamori A, Ochiai N, Miyazawa K, Sugihara M, Hayashi T, Goto D, Ito S, Sumida T (February 2012). "Six-transmembrane epithelial antigen of prostate4 (STEAP4) is a tumor necrosis factor alpha-induced protein that regulates IL-6, IL-8, and cell proliferation in synovium from patients with rheumatoid arthritis". Modern Rheumatology. 22 (1): 128–36. doi:10.1007/s10165-011-0475-y. PMID21633911.
Guo YY, Li NF, Zhou L, Yao XG, Wang HM, Zhang JH, Luo WL (July 2011). "A common variation within the STEAP4 gene exons is associated with obesity in Uygur general population". Chinese Medical Journal. 124 (14): 2096–100. PMID21933608.
Wangensteen T, Akselsen H, Holmen J, Undlien D, Retterstøl L (March 2011). "A common haplotype in NAPEPLD is associated with severe obesity in a Norwegian population-based cohort (the HUNT study)". Obesity. 19 (3): 612–7. doi:10.1038/oby.2010.219. PMID20885390.
Korkmaz CG, Korkmaz KS, Kurys P, Elbi C, Wang L, Klokk TI, Hammarstrom C, Troen G, Svindland A, Hager GL, Saatcioglu F (July 2005). "Molecular cloning and characterization of STAMP2, an androgen-regulated six transmembrane protein that is overexpressed in prostate cancer". Oncogene. 24 (31): 4934–45. doi:10.1038/sj.onc.1208677. PMID15897894.
