1AO4:
reference: Structures of cobalt(III)-pepleomycin and cobalt(III)-deglycopepleomycin (green forms) determined by NMR studies., Caceres-Cortes J, Sugiyama H, Ikudome K, Saito I, Wang AH, Eur J Biochem 1997 Mar 15;244(3):818-28. PMID: 9108252

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