1HM9:
reference: Crystal structure of Streptococcus pneumoniae N-acetylglucosamine-1-phosphate uridyltransferase bound to acetyl-coenzyme A reveals a novel active site architecture., Sulzenbacher G, Gal L, Peneff C, Fassy F, Bourne Y, J Biol Chem 2001 Apr 13;276(15):11844-51. PMID: 11118459

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