1VYD:
reference: Protein dynamics in the region of the sixth ligand methionine revealed by studies of imidazole binding to Rhodobacter capsulatus cytochrome c2 hinge mutants., Dumortier C, Fitch J, Van Petegem F, Vermeulen W, Meyer TE, Van Beeumen JJ, Cusanovich MA, Biochemistry 2004 Jun 22;43(24):7717-24. PMID: 15196014

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