Staphylococcal enterotoxin-like X (SElX) is a unique superantigen with functional features of two major families of staphylococcal virulence factors
Fig 6
Comparison of SElX with TSST-1 in complex with human Vβ2.
The structure of SElX (blue) with sLeX bound (in green) is overlaid with the structure of TSST-1 (silver) in complex with the Vβ2 region (purple) of a human TCR molecule (PDB: 2IJ0).