5E99:
reference: Conservation and diversity in the ultralong third heavy-chain complementarity-determining region of bovine antibodies., Stanfield RL, Wilson IA, Smider VV, Sci Immunol. 2016 Jul;1(1). pii: aaf7962. Epub 2016 Jul 14. PMID: 27574710

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