2XA7:
reference: A large-scale conformational change couples membrane recruitment to cargo binding in the AP2 clathrin adaptor complex., Jackson LP, Kelly BT, McCoy AJ, Gaffry T, James LC, Collins BM, Honing S, Evans PR, Owen DJ, Cell. 2010 Jun 25;141(7):1220-9. PMID: 20603002

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