5ZR6:
reference: Crystal structures of manganese-dependent transcriptional repressor MntR (Rv2788) from Mycobacterium tuberculosis in apo and manganese bound forms., Cong X, Yuan Z, Wang Z, Wei B, Xu S, Wang J, Biochem Biophys Res Commun. 2018 Jun 22;501(2):423-427. doi:, 10.1016/j.bbrc.2018.05.005. PMID: 29730293

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