2EIX:
reference: Structure of Physarum polycephalum cytochrome b5 reductase at 1.56 A resolution., Kim S, Suga M, Ogasahara K, Ikegami T, Minami Y, Yubisui T, Tsukihara T, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2007 Apr 1;63(Pt, 4):274-9. Epub 2007 Mar 23. PMID: 17401193

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