title: Immunologic cross-reactivity of type A streptococcal exotoxin (erythrogenic toxin) and staphylococcal enterotoxins B and C1.
abstract: Immunologic cross-reactivity between Streptococcus pyogenes type A exotoxin (erythrogenic toxin) and Staphylococcus aureus enterotoxins B and C1 was demonstrated by Ouchterlony double diffusion, Western immunoblot, and immunodot analyses. Specific antiserum to type A streptococcal exotoxin reacted more strongly with staphylococcal enterotoxin B than with enterotoxin C1. The reactivity of type A streptococcal exotoxin with antiserum to staphylococcal enterotoxin B was greater than that of antiserum to enterotoxin C1. These results suggest that a conserved domain is present in the three exotoxins, which most likely originated from a common evolutionary ancestor.
mesh_terms: D000907:Antibodies, Bacterial / Q000276:immunology; D000942:Antigens, Bacterial / Q000276:immunology; D001426:Bacterial Proteins; D003429:Cross Reactions; D004768:Enterotoxins / Q000276:immunology*; D005098:Exotoxins / Q000276:immunology*; D008565:Membrane Proteins; D010802:Phylogeny; D013211:Staphylococcus aureus / Q000235:genetics / Q000276:immunology*; D013297:Streptococcus pyogenes / Q000235:genetics / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D004768:Enterotoxins; D005098:Exotoxins; D008565:Membrane Proteins; C117980:SpeA protein, Streptococcus pyogenes; C027951:erythrogenic toxin; C031818:enterotoxin B, staphylococcal; C034959:enterotoxin C, staphylococcal