1H38:
reference: Structure of a T7 RNA polymerase elongation complex at 2.9 A resolution., Tahirov TH, Temiakov D, Anikin M, Patlan V, McAllister WT, Vassylyev DG, Yokoyama S, Nature 2002 Nov 7;420(6911):43-50. PMID: 12422209

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