Cyclin-dependent kinase 8

Cyclin-dependent kinase 8
Symbols CDK8; K35; MGC126074; MGC126075
External IDs OMIM603184 MGI1196224 HomoloGene55565 GeneCards: CDK8 Gene
RNA expression pattern
PBB GE CDK8 204831 at tn.png
More reference expression data
Species Human Mouse
Entrez 1024 264064
Ensembl ENSG00000132964 ENSMUSG00000029635
UniProt P49336 n/a
RefSeq (mRNA) NM_001260 NM_153599.3
RefSeq (protein) NP_001251 NP_705827.2
Location (UCSC) Chr 13:
26.83 – 26.98 Mb
Chr 5:
147.04 – 147.11 Mb
PubMed search [1] [2]

Cell division protein kinase 8 is an enzyme that in humans is encoded by the CDK8 gene.[1][2]

The protein encoded by this gene is a member of the cyclin-dependent protein kinase (CDK) family. CDK family members are highly similar to the gene products of Saccharomyces cerevisiae cdc28, and Schizosaccharomyces pombe cdc2, and are known to be important regulators of cell cycle progression. This kinase and its regulatory subunit cyclin C are components of the RNA polymerase II holoenzyme complex, which phosphorylates the carboxy-terminal domain (CTD) of the largest subunit of RNA polymerase II. This kinase has also been shown to regulate transcription by targeting the CDK7/cyclin H subunits of the general transcription initiation factor IIH (TFIIH), thus providing a link between the 'Mediator-like' protein complexes and the basal transcription machinery.[2]



Cyclin-dependent kinase 8 has been shown to interact with MED16,[3][4] MED26,[5] MED17,[3][4] MED14,[6][3] CREB binding protein,[7] MED1,[3][4] MED6,[8][6][3][4] MED24,[3][4] CCNC,[9][7][6][4][1] POLR2A,[7] MED21,[7][10][3][4] SMARCB1,[7] MED12[3][4] and CRSP3.[6][4]


  1. ^ a b Tassan JP, Jaquenoud M, Leopold P, Schultz SJ, Nigg EA (Oct 1995). "Identification of human cyclin-dependent kinase 8, a putative protein kinase partner for cyclin C". Proc Natl Acad Sci U S A 92 (19): 8871–5. doi:10.1073/pnas.92.19.8871. PMC 41069. PMID 7568034. 
  2. ^ a b "Entrez Gene: CDK8 cyclin-dependent kinase 8". 
  3. ^ a b c d e f g h Ito, M; Yuan C X, Malik S, Gu W, Fondell J D, Yamamura S, Fu Z Y, Zhang X, Qin J, Roeder R G (Mar. 1999). "Identity between TRAP and SMCC complexes indicates novel pathways for the function of nuclear receptors and diverse mammalian activators". Mol. Cell (UNITED STATES) 3 (3): 361–70. doi:10.1016/S1097-2765(00)80463-3. ISSN 1097-2765. PMID 10198638. 
  4. ^ a b c d e f g h i Kang, Yun Kyoung; Guermah Mohamed, Yuan Chao-Xing, Roeder Robert G (Mar. 2002). "The TRAP/Mediator coactivator complex interacts directly with estrogen receptors α and β 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. 
  5. ^ Sato, Shigeo; Tomomori-Sato Chieri, Parmely Tari J, Florens Laurence, Zybailov Boris, Swanson Selene K, Banks Charles A S, Jin Jingji, Cai Yong, Washburn Michael P, Conaway Joan Weliky, Conaway Ronald C (Jun. 2004). "A set of consensus mammalian mediator subunits identified by multidimensional protein identification technology". Mol. Cell (United States) 14 (5): 685–91. doi:10.1016/j.molcel.2004.05.006. ISSN 1097-2765. PMID 15175163. 
  6. ^ a b c d Wang, G; Cantin G T, Stevens J L, Berk A J (Jul. 2001). "Characterization of Mediator Complexes from HeLa Cell Nuclear Extract". Mol. Cell. Biol. (United States) 21 (14): 4604–13. doi:10.1128/MCB.21.14.4604-4613.2001. ISSN 0270-7306. PMC 87123. PMID 11416138. 
  7. ^ a b c d e Cho, H; Orphanides G, Sun X, Yang X J, Ogryzko V, Lees E, Nakatani Y, Reinberg D (Sep. 1998). "A Human RNA Polymerase II Complex Containing Factors That Modify Chromatin Structure". Mol. Cell. Biol. (UNITED STATES) 18 (9): 5355–63. ISSN 0270-7306. PMC 109120. PMID 9710619. 
  8. ^ Yang, Fajun; DeBeaumont Rosalie, Zhou Sharleen, Näär Anders M (Feb. 2004). "The activator-recruited cofactor/Mediator coactivator subunit ARC92 is a functionally important target of the VP16 transcriptional activator". Proc. Natl. Acad. Sci. U.S.A. (United States) 101 (8): 2339–44. doi:10.1073/pnas.0308676100. ISSN 0027-8424. PMC 356952. PMID 14983011. 
  9. ^ Zhang, Y; Iratni R, Erdjument-Bromage H, Tempst P, Reinberg D (May. 1997). "Histone deacetylases and SAP18, a novel polypeptide, are components of a human Sin3 complex". Cell (UNITED STATES) 89 (3): 357–64. doi:10.1016/S0092-8674(00)80216-0. ISSN 0092-8674. PMID 9150135. 
  10. ^ Suñé, C; Hayashi T, Liu Y, Lane W S, Young R A, Garcia-Blanco M A (Oct. 1997). "CA150, a nuclear protein associated with the RNA polymerase II holoenzyme, is involved in Tat-activated human immunodeficiency virus type 1 transcription". Mol. Cell. Biol. (UNITED STATES) 17 (10): 6029–39. ISSN 0270-7306. PMC 232452. PMID 9315662. 

Further reading

External links

B bsyn: dna (repl, cycl, reco, repr· tscr (fact, tcrg, nucl, rnat, rept, ptts) · tltn (risu, pttl, nexn) · dnab, rnab/runp · stru (domn, 1°, 2°, 3°, )

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