3WIW:
reference: Crystal structure of a bacterial unsaturated glucuronyl hydrolase with specificity for heparin., Nakamichi Y, Mikami B, Murata K, Hashimoto W, J Biol Chem. 2014 Jan 8. PMID: 24403065

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