1LK6:
reference: Serpin polymerization is prevented by a hydrogen bond network that is centered on his-334 and stabilized by glycerol., Zhou A, Stein PE, Huntington JA, Carrell RW, J Biol Chem 2003 Apr 25;278(17):15116-22. Epub 2003 Feb 10. PMID: 12578831

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