3QT1:
reference: Evolution of two modes of intrinsic RNA polymerase transcript cleavage., Ruan W, Lehmann E, Thomm M, Kostrewa D, Cramer P, J Biol Chem. 2011 May 27;286(21):18701-7. Epub 2011 Mar 23. PMID: 21454497

This OCA Structure page
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