title: Cloning and expression of streptococcal pyrogenic exotoxin A and staphylococcal toxic shock syndrome toxin-1 in Bacillus subtilis.
abstract: The genes encoding streptococcal pyrogenic exotoxin type A (SPE A) and staphylococcal toxic shock syndrome toxin-1 (TSST-1) were stably cloned and expressed in Bacillus subtilis. In the non-pathogenic Bacillus background, the recombinant speA clone expressed 32-fold more SPE A than the native streptococcus, and similarly, the recombinant plasmid harboring tst expressed 4-fold more TSST-1 in Bacillus than in the native Staphylococcus aureus. The Bacillus-derived products were secreted into the culture fluid, were resistant to proteolytic degradation and their biological activities mimicked native preparations.
mesh_terms: D001412:Bacillus subtilis / Q000235:genetics; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D001681:Biological Assay; D003001:Cloning, Molecular; D004768:Enterotoxins / Q000235:genetics*; D005098:Exotoxins / Q000235:genetics*; D005786:Gene Expression Regulation; D005798:Genes, Bacterial; D005822:Genetic Vectors; D008565:Membrane Proteins; D013210:Staphylococcus / Q000235:genetics*; D013291:Streptococcus / Q000235:genetics*; D018089:Superantigens
chemical_list: D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004768:Enterotoxins; D005098:Exotoxins; D008565:Membrane Proteins; C117980:SpeA protein, Streptococcus pyogenes; D018089:Superantigens; C030107:enterotoxin F, Staphylococcal; C027951:erythrogenic toxin