## Abstract Toxic‐shock syndrome is primarily caused by the Toxic‐shock syndrome toxin 1 (TSST‐1), which is secreted by the Gram‐positive bacterium __Staphylococcus aureus__. The toxin belongs to a family of superantigens (SAgs) which exhibit several shared biological properties, including the indu
Cloning and expression of streptococcal pyrogenic exotoxin A and staphylococcal toxic shock syndrome toxin-1 in Bacillus subtilis
✍ Scribed by Kreiswirth, B. N. ;Handley, J. P. ;Schlievert, P. M. ;Novick, R. P.
- Book ID
- 104725088
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 459 KB
- Volume
- 208
- Category
- Article
- ISSN
- 0026-8925
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✦ Synopsis
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.
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