1SE4:
reference: Residues defining V beta specificity in staphylococcal enterotoxins., Swaminathan S, Furey W, Pletcher J, Sax M, Nat Struct Biol 1995 Aug;2(8):680-6. PMID: 7552730

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