1RLC:
reference: Crystal structure of the unactivated ribulose 1,5-bisphosphate carboxylase/oxygenase complexed with a transition state analog, 2-carboxy-D-arabinitol 1,5-bisphosphate., Zhang KY, Cascio D, Eisenberg D, Protein Sci 1994 Jan;3(1):64-9. PMID: 8142899

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