6TR1:
reference: Crystal structures of native cytochrome c6 from Thermosynechococcus elongatus in two different space groups and implications for its oligomerization., Falke S, Feiler C, Chapman H, Sarrou I, Acta Crystallogr F Struct Biol Commun. 2020 Sep 1;76(Pt 9):444-452. doi:, 10.1107/S2053230X20010249. Epub 2020 Aug 20. PMID: 32880593

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