3CZS: Golgi Alpha-Mannosidase II (D204a Nucleophile Mutant)
reference: Golgi alpha-mannosidase II cleaves two sugars sequentially in the same catalytic site., Shah N, Kuntz DA, Rose DR, Proc Natl Acad Sci U S A. 2008 Jul 15;105(28):9570-5. Epub 2008 Jul 3. PMID: 18599462

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