RNA polymerase II-associated protein 1

UniProtKB accession:  P38351

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UniProtKB description:  The PAF1 complex is a multifunctional complex. Involved in transcription initiation via genetic interactions with TATA-binding proteins. Involved in elongation. It regulates 3'-end formation of snR47 by modulating the recruitment or stable association of NRD1 and NAB3 with RNA polymerase II. Also has a role in transcription-coupled histone modification. Required for activation of the RAD6/UBC2-BRE1 ubiquitin ligase complex, which ubiquitinates histone H2B to form H2BK123ub1. Also required for the methylation of histone H3 by the COMPASS complex to form H3K4me, by SET2 to form H3K36me, and by DOT1 to form H3K79me. RNA polymerase II associated protein important for transcription of a subset of genes. Required for both positive and negative regulation. Negatively regulates MAK16 expression. Also required for efficient CLN2 transcription in late G1 and may be involved in transcription of galactose-inducible genes.