The activation of gene transcription is a multistep process that is triggered by factors that recognize transcriptional enhancer sites in DNA. These factors work with co-activators to direct transcriptional initiation by the RNA polymerase II apparatus. The protein encoded by this gene is a subunit of the CRSP (cofactor required for SP1 activation) complex, which, along with TFIID, is required for efficient activation by SP1. This protein is also a component of other multisubunit complexes e.g. thyroid hormone receptor-(TR-) associated proteins which interact with TR and facilitate TR function on DNA templates in conjunction with initiation factors and cofactors. This protein also acts as a metastasis suppressor. Two alternatively spliced transcript variants encoding different isoforms have been described for this gene.[2]
↑Ryu S, Zhou S, Ladurner AG, Tjian R (Feb 1999). "The transcriptional cofactor complex CRSP is required for activity of the enhancer-binding protein Sp1". Nature. 397 (6718): 446–50. doi:10.1038/17141. PMID9989412.
Boyer TG, Martin ME, Lees E, Ricciardi RP, Berk AJ (May 1999). "Mammalian Srb/Mediator complex is targeted by adenovirus E1A protein". Nature. 399 (6733): 276–9. doi:10.1038/20466. PMID10353252.
Nagase T, Ishikawa K, Kikuno R, Hirosawa M, Nomura N, Ohara O (Oct 1999). "Prediction of the coding sequences of unidentified human genes. XV. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro". DNA Research. 6 (5): 337–45. doi:10.1093/dnares/6.5.337. PMID10574462.
Stevens JL, Cantin GT, Wang G, Shevchenko A, Shevchenko A, Berk AJ (Apr 2002). "Transcription control by E1A and MAP kinase pathway via Sur2 mediator subunit". Science. 296 (5568): 755–8. doi:10.1126/science.1068943. PMID11934987.
Goldberg SF, Miele ME, Hatta N, Takata M, Paquette-Straub C, Freedman LP, Welch DR (Jan 2003). "Melanoma metastasis suppression by chromosome 6: evidence for a pathway regulated by CRSP3 and TXNIP". Cancer Research. 63 (2): 432–40. PMID12543799.
Sato S, Tomomori-Sato C, Banks CA, Parmely TJ, Sorokina I, Brower CS, Conaway RC, Conaway JW (Dec 2003). "A mammalian homolog of Drosophila melanogaster transcriptional coactivator intersex is a subunit of the mammalian Mediator complex". The Journal of Biological Chemistry. 278 (50): 49671–4. doi:10.1074/jbc.C300444200. PMID14576168.
Tomomori-Sato C, Sato S, Parmely TJ, Banks CA, Sorokina I, Florens L, Zybailov B, Washburn MP, Brower CS, Conaway RC, Conaway JW (Feb 2004). "A mammalian mediator subunit that shares properties with Saccharomyces cerevisiae mediator subunit Cse2". The Journal of Biological Chemistry. 279 (7): 5846–51. doi:10.1074/jbc.M312523200. PMID14638676.
Mo X, Kowenz-Leutz E, Xu H, Leutz A (Jan 2004). "Ras induces mediator complex exchange on C/EBP beta". Molecular Cell. 13 (2): 241–50. doi:10.1016/S1097-2765(03)00521-5. PMID14759369.
Sato S, Tomomori-Sato C, Parmely TJ, Florens L, Zybailov B, Swanson SK, Banks CA, Jin J, Cai Y, Washburn MP, Conaway JW, Conaway RC (Jun 2004). "A set of consensus mammalian mediator subunits identified by multidimensional protein identification technology". Molecular Cell. 14 (5): 685–91. doi:10.1016/j.molcel.2004.05.006. PMID15175163.
Wada O, Oishi H, Takada I, Yanagisawa J, Yano T, Kato S (Aug 2004). "BRCA1 function mediates a TRAP/DRIP complex through direct interaction with TRAP220". Oncogene. 23 (35): 6000–5. doi:10.1038/sj.onc.1207786. PMID15208681.