3QGA:
reference: Iron-containing urease in a pathogenic bacterium., Carter EL, Tronrud DE, Taber SR, Karplus PA, Hausinger RP, Proc Natl Acad Sci U S A. 2011 Jul 25. PMID: 21788478

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