9RUB:
reference: Crystal structure of activated ribulose-1,5-bisphosphate carboxylase complexed with its substrate, ribulose-1,5-bisphosphate., Lundqvist T, Schneider G, J Biol Chem 1991 Jul 5;266(19):12604-11. PMID: 1905726

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