2BPN:
reference: Solution structures of tetrahaem ferricytochrome c3 from Desulfovibrio vulgaris (Hildenborough) and its K45Q mutant: the molecular basis of cooperativity., Messias AC, Aguiar AP, Brennan L, Salgueiro CA, Saraiva LM, Xavier AV, Turner DL, Biochim Biophys Acta. 2006 Feb;1757(2):143-53. Epub 2006 Feb 20. PMID: 16527248

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