1AOJ:
reference: The SH3 domain of Eps8 exists as a novel intertwined dimer., Kishan KV, Scita G, Wong WT, Di Fiore PP, Newcomer ME, Nat Struct Biol 1997 Sep;4(9):739-43. PMID: 9303002

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