3P9Y:
reference: cis-Proline-mediated Ser(P)5 Dephosphorylation by the RNA Polymerase II C-terminal Domain Phosphatase Ssu72., Werner-Allen JW, Lee CJ, Liu P, Nicely NI, Wang S, Greenleaf AL, Zhou P, J Biol Chem. 2011 Feb 18;286(7):5717-26. Epub 2010 Dec 15. PMID: 21159777

This OCA Structure page
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