3AO0:
reference: How coenzyme B12-dependent ethanolamine ammonia-lyase deals with both enantiomers of 2-amino-1-propanol as substrates: structure-based rationalization., Shibata N, Higuchi Y, Toraya T, Biochemistry. 2011 Feb 1;50(4):591-8. Epub 2010 Dec 30. PMID: 21142024

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