1A7G:
reference: Structure of the E2 DNA-binding domain from human papillomavirus serotype 31 at 2.4 A., Bussiere DE, Kong X, Egan DA, Walter K, Holzman TF, Lindh F, Robins T, Giranda VL, Acta Crystallogr D Biol Crystallogr 1998 Nov 1;54(Pt 6 Pt 2):1367-76. PMID: 10089498

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