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Any macromolecular complex composed of two or more polypeptide subunits, which may or may not be identical. Protein complexes may have other associated non-protein prosthetic groups, such as nucleotides, metal ions or other small molecules. A protein complex, distinct from RNA polymerase, that associates with DNA at promoters or at cis-acting regulatory sequences, by direct binding or by interaction with other DNA-binding polypeptides or complexes, and regulates transcription. Large protein complex composed of the RNA polymerase core complex and a variety of other proteins including transcription factor complexes TFIIA, D, E, F, and H which are required for promoter recognition, and the Mediator subcomplex. Catalyzes the synthesis of eukaryotic pre-mRNA. Any constituent part of the nucleoplasm, that part of the nuclear content other than the chromosomes or the nucleolus. A transcription factor complex that forms part of the holo TFIIH complex. In Saccharomyces, TFIIK contains Ccl1p, Tfb3p and Kin2p. A complex that contains kinase activity directed towards the C-terminal Domain (CTD) of the largest subunit of RNA polymerase II and is essential for initiation at RNA polymerase II promoters in vitro. In S. cerevisiae, it is composed of the 5-subunit core (Rad3p, Tfb1p, Tfb2p, Ssl1p and Tfb4p), Ssl2p, and TFIIK (Kin28p, Ccl1p, and Tfb3p). All of the subunits have equivalents in humans: the 5 subunit core is composed of ERCC2, p62, p55, p44, p34; the equivalent of the TFIIK subcomplex is composed of MO15, Mat1, and a cyclin; the human equivalent of Ssl2p is XPB.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: TFIIK complex
Acc: GO:0070985
Aspect: Cellular Component
Desc: A transcription factor complex that forms part of the holo TFIIH complex. In Saccharomyces, TFIIK contains Ccl1p, Tfb3p and Kin2p.
Proteins in PDR annotated with:
   This term: 3 [Search]
   Term or descendants: 3 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0070985 - TFIIK complex (interactive image map)
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