1ESF:
reference: Crystal structure of the superantigen staphylococcal enterotoxin type A., Schad EM, Zaitseva I, Zaitsev VN, Dohlsten M, Kalland T, Schlievert PM, Ohlendorf DH, Svensson LA, EMBO J 1995 Jul 17;14(14):3292-301. PMID: 7628431

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