2BQ4:
reference: The type I/type II cytochrome c3 complex: an electron transfer link in the hydrogen-sulfate reduction pathway., Pieulle L, Morelli X, Gallice P, Lojou E, Barbier P, Czjzek M, Bianco P, Guerlesquin F, Hatchikian EC, J Mol Biol. 2005 Nov 18;354(1):73-90. Epub 2005 Sep 29. PMID: 16226767

This OCA Structure page
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