3BSS:
reference: Crystal structure and catalytic mechanism of PglD from Campylobacter jejuni., Olivier NB, Imperiali B, J Biol Chem. 2008 Oct 10;283(41):27937-46. Epub 2008 Jul 30. PMID: 18667421

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