1YVY:
reference: Crystal structure of Anaerobiospirillum succiniciproducens PEP carboxykinase reveals an important active site loop., Cotelesage JJ, Prasad L, Zeikus JG, Laivenieks M, Delbaere LT, Int J Biochem Cell Biol 2005 Sep;37(9):1829-37. PMID: 15890557

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