1LS3:
reference: Location of the pteroylpolyglutamate-binding site on rabbit cytosolic serine hydroxymethyltransferase., Fu TF, Scarsdale JN, Kazanina G, Schirch V, Wright HT, J Biol Chem 2003 Jan 24;278(4):2645-53. Epub 2002 Nov 15. PMID: 12438316

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