1AUU:
reference: From genetic to structural characterization of a new class of RNA-binding domain within the SacY/BglG family of antiterminator proteins., Manival X, Yang Y, Strub MP, Kochoyan M, Steinmetz M, Aymerich S, EMBO J 1997 Aug 15;16(16):5019-29. PMID: 9305643

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