3GSI:
reference: An internal reaction chamber in dimethylglycine oxidase provides efficient protection from exposure to toxic formaldehyde., Tralau T, Lafite P, Levy C, Combe JP, Scrutton NS, Leys D, J Biol Chem. 2009 Jun 26;284(26):17826-34. Epub 2009 Apr 15. PMID: 19369258

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