4RWM:
reference: An unexpected reactivity of the P460 cofactor in hydroxylamine oxidoreductase., Dietl A, Maalcke W, Barends TR, Acta Crystallogr D Biol Crystallogr. 2015 Aug;71(Pt 8):1708-13. doi:, 10.1107/S1399004715010706. Epub 2015 Jul 31. PMID: 26249351

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