1C2N:
reference: Solution structure, rotational diffusion anisotropy and local backbone dynamics of Rhodobacter capsulatus cytochrome c2., Cordier F, Caffrey M, Brutscher B, Cusanovich MA, Marion D, Blackledge M, J Mol Biol 1998 Aug 14;281(2):341-61. PMID: 9698552

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