MED27

MED27

MED27

Protein-coding gene in the species Homo sapiens

Mediator of RNA polymerase II transcription subunit 27 is an enzyme that in humans is encoded by the MED27 gene.[5][6] It forms part of the Mediator complex.

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The ubiquitous expression of Med27 mRNA suggests a universal requirement for Med27 in transcriptional initiation. Loss of Crsp34/Med27 decreases amacrine cell number, but increases the number of rod photoreceptor cells.[7]

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.[6]

See also

References

  1. [1]
    GRCh38: Ensembl release 89: ENSG00000160563 – Ensembl, May 2017
  2. [2]
    GRCm38: Ensembl release 89: ENSMUSG00000026799 – Ensembl, May 2017
  3. [3]
    "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. [4]
    "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. [5]
    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. Bibcode:1999Natur.397..446R. doi:10.1038/17141. hdl:11858/00-001M-0000-0019-A36A-8. PMID 9989412. S2CID 4405569.
  6. [6]
    "Entrez Gene: CRSP8 cofactor required for Sp1 transcriptional activation, subunit 8, 34kDa".
  7. [7]
    Dürr K, Holzschuh J, Filippi A, Ettl AK, Ryu S, Shepherd IT, Driever W (October 2006). "Differential roles of transcriptional mediator complex subunits Crsp34/Med27, Crsp150/Med14 and Trap100/Med24 during zebrafish retinal development". Genetics. 174 (2): 693–705. doi:10.1534/genetics.105.055152. PMC 1602071. PMID 16582438.
This article incorporates text from the public domain Pfam and InterPro: IPR021627

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