5MGY:
reference: The flavinyl transferase ApbE of Pseudomonas stutzeri matures the NosR protein required for nitrous oxide reduction., Zhang L, Trncik C, Andrade SL, Einsle O, Biochim Biophys Acta. 2016 Nov 15;1858(2):95-102. doi:, 10.1016/j.bbabio.2016.11.008. PMID: 27864152

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).