3SUT:
reference: Gaining insight into the inhibition of glycoside hydrolase family 20 exo-beta-N-acetylhexosaminidases using a structural approach., Sumida T, Stubbs KA, Ito M, Yokoyama S, Org Biomol Chem. 2012 Apr 7;10(13):2607-12. Epub 2012 Feb 27. PMID: 22367352

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