4OCG:
reference: Characterization of the mechanism of the NADH-dependent polysulfide reductase (Npsr) from Shewanella loihica PV-4: Formation of a productive NADH-enzyme complex and its role in the general mechanism of NADH and FAD-dependent enzymes., Lee KH, Humbarger S, Bahnvadia R, Sazinsky MH, Crane EJ 3rd, Biochim Biophys Acta. 2014 Sep;1844(9):1708-17. doi:, 10.1016/j.bbapap.2014.06.013. Epub 2014 Jun 26. PMID: 24981797

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