4D0Q:
reference: Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module., Suits MD, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB, J Biol Chem. 2014 Aug 6. pii: jbc.M114.578435. PMID: 25100731

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