Putative RNA polymerase II subunit B1 CTD phosphatase RPAP2 (RPAP2)

Protein phosphatase that shows CTD phosphatase activity and regulates transcription of snRNA genes. Recognizes and binds phosphorylated'Ser-7' of the C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit POLR2A, and mediates dephosphorylation of'Ser-5' of the CTD, thereby promoting transcription of snRNA genes.

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