1BVC:
reference: Structure determination of the biliverdin apomyoglobin complex: crystal structure analysis of two crystal forms at 1.4 and 1.5 A resolution., Wagner UG, Muller N, Schmitzberger W, Falk H, Kratky C, J Mol Biol 1995 Mar 24;247(2):326-37. PMID: 7707378

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