4GEV:
reference: A Remote Mutation Affects the Hydride Transfer by Disrupting Concerted Protein Motions in Thymidylate Synthase., Wang Z, Abeysinghe T, Finer-Moore JS, Stroud RM, Kohen A, J Am Chem Soc. 2012 Oct 15. PMID: 23034004

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