4KUZ:
reference: Structural evidence for a constrained conformation of short CDR-L3 in antibodies., Teplyakov A, Obmolova G, Malia TJ, Luo J, Gilliland GL, Proteins. 2014 Jan 27. doi: 10.1002/prot.24522. PMID: 24470236

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