2V7N:
reference: Structure of the recombinant antibody Fab fragment f3p4., Frey D, Huber T, Pluckthun A, Grutter MG, Acta Crystallogr D Biol Crystallogr. 2008 Jun;64(Pt 6):636-43. Epub 2008 May 14. PMID: 18560151

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