MED1

Last updated
MED1
PDB 1rjk EBI.jpg
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases MED1 , CRSP1, CRSP200, DRIP205, DRIP230, PBP, PPARBP, PPARGBP, RB18A, TRAP220, TRIP2, mediator complex subunit 1
External IDs OMIM: 604311; MGI: 1100846; HomoloGene: 21002; GeneCards: MED1; OMA:MED1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_004774

NM_001080118
NM_013634
NM_134027
NM_001361950
NM_001361951

RefSeq (protein)

NP_004765

NP_001073587
NP_038662
NP_598788
NP_001348879
NP_001348880

Location (UCSC) Chr 17: 39.4 – 39.45 Mb Chr 11: 98.04 – 98.08 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Mediator of RNA polymerase II transcription subunit 1 also known as DRIP205 or Trap220 is a subunit of the Mediator complex and is a protein that in humans is encoded by the MED1 gene. [5] [6] [7] MED1 functions as a nuclear receptor coactivator.

Med1
Identifiers
SymbolMed1
Pfam PF10744
InterPro IPR019680
Available protein structures:
Pfam   structures / ECOD  
PDB RCSB PDB; PDBe; PDBj
PDBsum structure summary

Function

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 mediator of RNA polymerase II transcription subunit 1 protein 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 that interact with TR and facilitate TR function on DNA templates in conjunction with initiation factors and cofactors]. It also regulates p53-dependent apoptosis and it is essential for adipogenesis. This protein is known to have the ability to self-oligomerize. [7]

Interactions

MED1 has been shown to interact with:

Protein family

This entry represents subunit Med1 of the Mediator complex. The Med1 forms part of the Med9 submodule of the Srb/Med complex. It is one of three subunits essential for viability of the whole organism via its role in environmentally-directed cell-fate decisions. [21]

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000125686 Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000018160 Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Zhu Y, Qi C, Jain S, Rao MS, Reddy JK (November 1997). "Isolation and characterization of PBP, a protein that interacts with peroxisome proliferator-activated receptor". J Biol Chem. 272 (41): 25500–6. doi: 10.1074/jbc.272.41.25500 . PMID   9325263.
  6. Zhu Y, Qi C, Jain S, Le Beau MM, Espinosa R, Atkins GB, Lazar MA, Yeldandi AV, Rao MS, Reddy JK (October 1999). "Amplification and overexpression of peroxisome proliferator-activated receptor binding protein (PBP/PPARBP) gene in breast cancer". Proc Natl Acad Sci U S A. 96 (19): 10848–53. Bibcode:1999PNAS...9610848Z. doi: 10.1073/pnas.96.19.10848 . PMC   17971 . PMID   10485914.
  7. 1 2 "Entrez Gene: PPARBP PPAR binding protein".
  8. Wang Q, Sharma D, Ren Y, Fondell JD (November 2002). "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.
  9. 1 2 Ito M, Yuan CX, Malik S, Gu W, Fondell JD, Yamamura S, Fu ZY, Zhang X, Qin J, Roeder RG (March 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.
  10. 1 2 Kitagawa H, Fujiki R, Yoshimura K, Mezaki Y, Uematsu Y, Matsui D, Ogawa S, Unno K, Okubo M, Tokita A, Nakagawa T, Ito T, Ishimi Y, Nagasawa H, Matsumoto T, Yanagisawa J, Kato S (June 2003). "The chromatin-remodeling complex WINAC targets a nuclear receptor to promoters and is impaired in Williams syndrome". Cell. 113 (7): 905–17. doi: 10.1016/s0092-8674(03)00436-7 . PMID   12837248.
  11. 1 2 Kang YK, Guermah M, Yuan CX, Roeder RG (March 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. 99 (5): 2642–7. Bibcode:2002PNAS...99.2642K. doi: 10.1073/pnas.261715899 . PMC   122401 . PMID   11867769.
  12. Zilliacus J, Holter E, Wakui H, Tazawa H, Treuter E, Gustafsson JA (April 2001). "Regulation of glucocorticoid receptor activity by 14—3-3-dependent intracellular relocalization of the corepressor RIP140". Mol. Endocrinol. 15 (4): 501–11. doi: 10.1210/mend.15.4.0624 . PMID   11266503.
  13. Hittelman AB, Burakov D, Iñiguez-Lluhí JA, Freedman LP, Garabedian MJ (October 1999). "Differential regulation of glucocorticoid receptor transcriptional activation via AF-1-associated proteins". EMBO J. 18 (19): 5380–8. doi:10.1093/emboj/18.19.5380. PMC   1171607 . PMID   10508170.
  14. Maeda Y, Rachez C, Hawel L, Byus CV, Freedman LP, Sladek FM (July 2002). "Polyamines modulate the interaction between nuclear receptors and vitamin D receptor-interacting protein 205". Mol. Endocrinol. 16 (7): 1502–10. doi: 10.1210/mend.16.7.0883 . PMID   12089346.
  15. Malik S, Wallberg AE, Kang YK, Roeder RG (August 2002). "TRAP/SMCC/mediator-dependent transcriptional activation from DNA and chromatin templates by orphan nuclear receptor hepatocyte nuclear factor 4". Mol. Cell. Biol. 22 (15): 5626–37. doi:10.1128/mcb.22.15.5626-5637.2002. PMC   133960 . PMID   12101254.
  16. Frade R, Balbo M, Barel M (December 2000). "RB18A, whose gene is localized on chromosome 17q12-q21.1, regulates in vivo p53 transactivating activity". Cancer Res. 60 (23): 6585–9. PMID   11118038.
  17. Drané P, Barel M, Balbo M, Frade R (December 1997). "Identification of RB18A, a 205 kDa new p53 regulatory protein which shares antigenic and functional properties with p53". Oncogene. 15 (25): 3013–24. doi: 10.1038/sj.onc.1201492 . PMID   9444950.
  18. Wallberg AE, Yamamura S, Malik S, Spiegelman BM, Roeder RG (November 2003). "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.
  19. Misra P, Qi C, Yu S, Shah SH, Cao WQ, Rao MS, Thimmapaya B, Zhu Y, Reddy JK (May 2002). "Interaction of PIMT with transcriptional coactivators CBP, p300, and PBP differential role in transcriptional regulation". J. Biol. Chem. 277 (22): 20011–9. doi: 10.1074/jbc.M201739200 . PMID   11912212.
  20. Yuan CX, Ito M, Fondell JD, Fu ZY, Roeder RG (July 1998). "The TRAP220 component of a thyroid hormone receptor- associated protein (TRAP) coactivator complex interacts directly with nuclear receptors in a ligand-dependent fashion". Proc. Natl. Acad. Sci. U.S.A. 95 (14): 7939–44. Bibcode:1998PNAS...95.7939Y. doi: 10.1073/pnas.95.14.7939 . PMC   20908 . PMID   9653119.
  21. Boube M, Joulia L, Cribbs DL, Bourbon HM (July 2002). "Evidence for a mediator of RNA polymerase II transcriptional regulation conserved from yeast to man". Cell. 110 (2): 143–51. doi: 10.1016/s0092-8674(02)00830-9 . PMID   12150923. S2CID   771362.

Further reading

This article incorporates text from the public domain Pfam and InterPro: IPR019680