6EFV:
reference: NADPH-dependent sulfite reductase flavoprotein adopts an extended conformation unique to this diflavin reductase., Tavolieri AM, Murray DT, Askenasy I, Pennington JM, McGarry L, Stanley CB, Stroupe ME, J Struct Biol. 2019 Feb 1;205(2):170-179. doi: 10.1016/j.jsb.2019.01.001. Epub, 2019 Jan 15. PMID: 30654136

This OCA Structure page
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