1OAS:
reference: Three-dimensional structure of O-acetylserine sulfhydrylase from Salmonella typhimurium., Burkhard P, Rao GS, Hohenester E, Schnackerz KD, Cook PF, Jansonius JN, J Mol Biol 1998;283(1):121-33. PMID: 9761678

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