1TVC:
reference: NMR structure of the flavin domain from soluble methane monooxygenase reductase from Methylococcus capsulatus (Bath)., Chatwood LL, Muller J, Gross JD, Wagner G, Lippard SJ, Biochemistry 2004 Sep 28;43(38):11983-91. PMID: 15379538

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