3WFZ:
reference: Directed evolution to enhance thermostability of galacto-N-biose/lacto-N-biose I phosphorylase., Koyama Y, Hidaka M, Nishimoto M, Kitaoka M, Protein Eng Des Sel. 2013 Sep 24. PMID: 24065834

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