3CUY:
reference: Structure and mechanism of GumK, a membrane-associated glucuronosyltransferase., Barreras M, Salinas SR, Abdian PL, Kampel MA, Ielpi L, J Biol Chem. 2008 Sep 5;283(36):25027-35. Epub 2008 Jul 2. PMID: 18596046

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