label: RNA polymerase II CTD heptapeptide repeat P6 isomerase activity
label_lc: rna polymerase ii ctd heptapeptide repeat p6 isomerase activity
description: "Catalysis of the reaction: RNA polymerase II large subunit CTD heptapeptide repeat (consensus YSPTSPS) cis-proline (omega=180) (position 6) = RNA polymerase II large subunit trans-proline (omega=0) (position 6)."