4PXI:
reference: Structural and functional basis of transcriptional regulation by TetR family protein CprB from S. coelicolor A3(2)., Bhukya H, Bhujbalrao R, Bitra A, Anand R, Nucleic Acids Res. 2014 Sep;42(15):10122-33. doi: 10.1093/nar/gku587. Epub 2014, Aug 4. PMID: 25092919

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