2KBL:
reference: NMR Structure of a Monomeric Intermediate on the Evolutionarily Optimized Assembly Pathway of a Small Trimerization Domain., Habazettl J, Reiner A, Kiefhaber T, J Mol Biol. 2009 Apr 8. PMID: 19361528

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