1RLY:
reference: Probing Zn2+-binding effects on the zinc-ribbon domain of human general transcription factor TFIIB., Ghosh M, Elsby LM, Mal TK, Gooding JM, Roberts SG, Ikura M, Biochem J 2004 Mar 1;378(Pt 2):317-24. PMID: 14641108

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