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EXOTOXINS 2. Erythrogenic toxin--- Streptococcus pyogenes  bacteria can carry a prophage which causes them  produce three types of cytotoxins, A, B, and C, which are also called erythrogenic toxins because  they damage capillaries under the skin and produce a red rash. The disease is called scarlet fever  because of this rash. Without the prophage,  Streptococcus pyogenes  produces what we call strep  throat, but not scarlet fever.       3. Botulinum toxin---produced by  Clostridium botulinum , this is a powerful neurotoxin which  is ingested with food where the organisms have grown. It prevents the transmission of nerve  impulses from nerve to muscle by binding to the nerve call and inhibiting the release of  acetylcholine. This causes flaccid (limp) paralysis and can be fatal. The organisms produce  endospores which can survive some home canning methods. 
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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