2BR3: Cmci-D160 Mg
reference: Insights into cephamycin biosynthesis: the crystal structure of CmcI from Streptomyces clavuligerus., Oster LM, Lester DR, Terwisscha van Scheltinga A, Svenda M, van Lun M, Genereux C, Andersson I, J Mol Biol. 2006 Apr 28;358(2):546-58. Epub 2006 Feb 21. PMID: 16527306

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