4MTU:
reference: High resolution crystal structure of Clostridium propionicum beta-alanyl-CoA:ammonia lyase, a new member of the "hot dog fold" protein superfamily., Heine A, Herrmann G, Selmer T, Terwesten F, Buckel W, Reuter K, Proteins. 2014 Mar 13. doi: 10.1002/prot.24557. PMID: 24623648

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