8war
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Structure of transcribing complex 8 (TC8), the initially transcribing complex with Pol II positioned 8nt downstream of TSS.
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Structural highlights
FunctionMAT1_HUMAN Stabilizes the cyclin H-CDK7 complex to form a functional CDK-activating kinase (CAK) enzymatic complex. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminus domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts. Involved in cell cycle control and in RNA transcription by RNA polymerase II.[1] References | ||||||||||||||||||||
This page was last modified 15:44, 13 August 2026.