3IJQ:
reference: Homology models guide discovery of diverse enzyme specificities among dipeptide epimerases in the enolase superfamily., Lukk T, Sakai A, Kalyanaraman C, Brown SD, Imker HJ, Song L, Fedorov AA, Fedorov EV, Toro R, Hillerich B, Seidel R, Patskovsky Y, Vetting MW, Nair SK, Babbitt PC, Almo SC, Gerlt JA, Jacobson MP, Proc Natl Acad Sci U S A. 2012 Mar 13;109(11):4122-7. Epub 2012 Mar 5. PMID: 22392983

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