2VQ1:
reference: Characterization of a diagnostic Fab fragment binding trimeric Lewis X., de Geus DC, van Roon AM, Thomassen EA, Hokke CH, Deelder AM, Abrahams JP, Proteins. 2009 Aug 1;76(2):439-47. PMID: 19173313

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