CDK12-CCNT1, Human (sf9, GST, Flag, His)

The CDK12 protein is a cyclin-dependent kinase that critically phosphorylates the C-terminal domain of POLR2A, thereby regulating transcription elongation. It selectively targets "Ser-5" phosphorylated at "Ser-7" in the CTD repeat and can also target "Ser-2". CDK12-CCNT1 Protein, Human (sf9, GST, Flag, His) is the recombinant human-derived CDK12-CCNT1, expressed by Sf9 insect cells, with N-His, N-GST, N-Flag labeled tag.