MED17

Mediator complex subunit 17
Identifiers
Symbols	MED17 ; CRSP6; CRSP77; DRIP80; TRAP80
External IDs	OMIM: 603810 MGI: 2182585 HomoloGene: 3151 GeneCards: MED17 Gene
Gene ontology Molecular function • RNA polymerase II transcription cofactor activity • transcription cofactor activity • transcription coactivator activity • receptor activity • protein binding • ligand-dependent nuclear receptor transcription coactivator activity • vitamin D receptor binding • thyroid hormone receptor binding • ubiquitin protein ligase activity Cellular component • ubiquitin ligase complex • nucleus • nucleoplasm • transcription factor complex • membrane • mediator complex • core mediator complex Biological process • regulation of transcription from RNA polymerase II promoter • transcription initiation from RNA polymerase II promoter • gene expression • protein ubiquitination • stem cell maintenance • intracellular steroid hormone receptor signaling pathway • androgen receptor signaling pathway • positive regulation of transcription, DNA-templated • positive regulation of transcription from RNA polymerase II promoter Sources: Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	9440	234959
Ensembl	ENSG00000042429	ENSMUSG00000031935
UniProt	Q9NVC6	Q8VCD5
RefSeq (mRNA)	NM_004268	NM_144933
RefSeq (protein)	NP_004259	NP_659182
Location (UCSC)	Chr 11: 93.78 – 93.81 Mb	Chr 9: 15.26 – 15.28 Mb
PubMed search

Mediator of RNA polymerase II transcription subunit 17 is an enzyme that in humans is encoded by the MED17 gene.^[1][2][3]

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.^[3]

Interactions

MED17 has been shown to interact with PPARGC1A,^[4] Cyclin-dependent kinase 8^[2][5] and BRCA1.^[6][7][8]

References

1. 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. PMID 9989412.
2. Ito M, Yuan CX, Malik S, Gu W, Fondell JD, Yamamura S, Fu ZY, Zhang X, Qin J, Roeder RG (Apr 1999). "Identity between TRAP and SMCC complexes indicates novel pathways for the function of nuclear receptors and diverse mammalian activators". Mol Cell 3 (3): 361–70. doi:10.1016/S1097-2765(00)80463-3. PMID 10198638.
3. "Entrez Gene: CRSP6 cofactor required for Sp1 transcriptional activation, subunit 6, 77kDa".
4. Wallberg, Annika E; Yamamura Soichiro; Malik Sohail; Spiegelman Bruce M; Roeder Robert G (Nov 2003). "Coordination of p300-mediated chromatin remodeling and TRAP/mediator function through coactivator PGC-1alpha". Mol. Cell (United States) 12 (5): 1137–49. doi:10.1016/S1097-2765(03)00391-5. ISSN 1097-2765. PMID 14636573.
5. Kang, Yun Kyoung; Guermah Mohamed; Yuan Chao-Xing; Roeder Robert G (Mar 2002). "The TRAP/Mediator coactivator complex interacts directly with estrogen receptors alpha and beta through the TRAP220 subunit and directly enhances estrogen receptor function in vitro". Proc. Natl. Acad. Sci. U.S.A. (United States) 99 (5): 2642–7. doi:10.1073/pnas.261715899. ISSN 0027-8424. PMC 122401. PMID 11867769.
6. Chiba, N; Parvin J D (Oct 2001). "Redistribution of BRCA1 among four different protein complexes following replication blockage". J. Biol. Chem. (United States) 276 (42): 38549–54. doi:10.1074/jbc.M105227200. ISSN 0021-9258. PMID 11504724.
7. Wada, Osamu; Oishi Hajime; Takada Ichiro; Yanagisawa Junn; Yano Tetsu; Kato Shigeaki (Aug 2004). "BRCA1 function mediates a TRAP/DRIP complex through direct interaction with TRAP220". Oncogene (England) 23 (35): 6000–5. doi:10.1038/sj.onc.1207786. ISSN 0950-9232. PMID 15208681.
8. Chiba, Natsuko; Parvin Jeffrey D (Aug 2002). "The BRCA1 and BARD1 association with the RNA polymerase II holoenzyme". Cancer Res. (United States) 62 (15): 4222–8. ISSN 0008-5472. PMID 12154023.

Further reading

• Fondell JD, Ge H, Roeder RG (1996). "Ligand induction of a transcriptionally active thyroid hormone receptor coactivator complex.". Proc. Natl. Acad. Sci. U.S.A. 93 (16): 8329–33. doi:10.1073/pnas.93.16.8329. PMC 38670. PMID 8710870.
• Rachez C, Lemon BD, Suldan Z, et al. (1999). "Ligand-dependent transcription activation by nuclear receptors requires the DRIP complex.". Nature 398 (6730): 824–8. doi:10.1038/19783. PMID 10235266.
• Näär AM, Beaurang PA, Zhou S, et al. (1999). "Composite co-activator ARC mediates chromatin-directed transcriptional activation.". Nature 398 (6730): 828–32. doi:10.1038/19789. PMID 10235267.
• Chiba N, Parvin JD (2001). "Redistribution of BRCA1 among four different protein complexes following replication blockage.". J. Biol. Chem. 276 (42): 38549–54. doi:10.1074/jbc.M105227200. PMID 11504724.
• Ge K, Guermah M, Yuan CX, et al. (2002). "Transcription coactivator TRAP220 is required for PPAR gamma 2-stimulated adipogenesis.". Nature 417 (6888): 563–7. doi:10.1038/417563a. PMID 12037571.
• Wang Q, Sharma D, Ren Y, Fondell JD (2003). "A coregulatory role for the TRAP-mediator complex in androgen receptor-mediated gene expression.". J. Biol. Chem. 277 (45): 42852–8. doi:10.1074/jbc.M206061200. PMID 12218053.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Lau JF, Nusinzon I, Burakov D, et al. (2003). "Role of metazoan mediator proteins in interferon-responsive transcription.". Mol. Cell. Biol. 23 (2): 620–8. doi:10.1128/MCB.23.2.620-628.2003. PMC 151539. PMID 12509459.
• Sato S, Tomomori-Sato C, Banks CA, et al. (2003). "Identification of mammalian Mediator subunits with similarities to yeast Mediator subunits Srb5, Srb6, Med11, and Rox3.". J. Biol. Chem. 278 (17): 15123–7. doi:10.1074/jbc.C300054200. PMID 12584197.
• Sato S, Tomomori-Sato C, Banks CA, et al. (2004). "A mammalian homolog of Drosophila melanogaster transcriptional coactivator intersex is a subunit of the mammalian Mediator complex.". J. Biol. Chem. 278 (50): 49671–4. doi:10.1074/jbc.C300444200. PMID 14576168.
• Wallberg AE, Yamamura S, Malik S, et al. (2004). "Coordination of p300-mediated chromatin remodeling and TRAP/mediator function through coactivator PGC-1alpha.". Mol. Cell 12 (5): 1137–49. doi:10.1016/S1097-2765(03)00391-5. PMID 14636573.
• Tomomori-Sato C, Sato S, Parmely TJ, et al. (2004). "A mammalian mediator subunit that shares properties with Saccharomyces cerevisiae mediator subunit Cse2.". J. Biol. Chem. 279 (7): 5846–51. doi:10.1074/jbc.M312523200. PMID 14638676.
• 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. PMID 14702039.
• Sato S, Tomomori-Sato C, Parmely TJ, et al. (2004). "A set of consensus mammalian mediator subunits identified by multidimensional protein identification technology.". Mol. Cell 14 (5): 685–91. doi:10.1016/j.molcel.2004.05.006. PMID 15175163.
• Wada O, Oishi H, Takada I, et al. (2004). "BRCA1 function mediates a TRAP/DRIP complex through direct interaction with TRAP220.". Oncogene 23 (35): 6000–5. doi:10.1038/sj.onc.1207786. PMID 15208681.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Jang MK, Mochizuki K, Zhou M, et al. (2005). "The bromodomain protein Brd4 is a positive regulatory component of P-TEFb and stimulates RNA polymerase II-dependent transcription.". Mol. Cell 19 (4): 523–34. doi:10.1016/j.molcel.2005.06.027. PMID 16109376.
• Kimura K, Wakamatsu A, Suzuki Y, et al. (2006). "Diversification of transcriptional modulation: large-scale identification and characterization of putative alternative promoters of human genes.". Genome Res. 16 (1): 55–65. doi:10.1101/gr.4039406. PMC 1356129. PMID 16344560.