6BKA:
reference: Crystal structure of yeast nitronate monooxygenase from Cyberlindnera saturnus., Agniswamy J, Reis RAG, Wang YF, Smitherman C, Su D, Weber I, Gadda G, Proteins. 2018 Jan 31. doi: 10.1002/prot.25470. PMID: 29383742

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