1RHS:
reference: Structure of sulfur-substituted rhodanese at 1.36 A resolution., Gliubich F, Berni R, Colapietro M, Barba L, Zanotti G, Acta Crystallogr D Biol Crystallogr. 1998 Jul 1;54(Pt 4):481-6. PMID: 9761843

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