3FFD:
reference: Structural basis for antibody discrimination between two hormones that recognize the parathyroid hormone receptor., McKinstry WJ, Polekhina G, Diefenbach-Jagger H, Ho PW, Sato K, Onuma E, Gillespie MT, Martin TJ, Parker MW, J Biol Chem. 2009 Jun 5;284(23):15557-63. doi: 10.1074/jbc.M900044200. Epub 2009 , Apr 4. PMID: 19346515

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