3HBL:
reference: A symmetrical tetramer for S. aureus pyruvate carboxylase in complex with coenzyme A., Yu LP, Xiang S, Lasso G, Gil D, Valle M, Tong L, Structure. 2009 Jun 10;17(6):823-32. PMID: 19523900

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