2CWS:
reference: A structural basis for depolymerization of alginate by polysaccharide lyase family-7., Yamasaki M, Ogura K, Hashimoto W, Mikami B, Murata K, J Mol Biol 2005 Sep 9;352(1):11-21. PMID: 16081095

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