Streptolysin

Streptolysin is a streptococcal hemolytic exotoxin.[1][2]

Types include Streptolysin O (SLO), which is oxygen-labile, and Streptolysin S (SLS), which is oxygen-stable.[3]

An antibody, anti-streptolysin O, can be detected in an antistreptolysin O titre.

Streptolysin O is hemolytically active only in a reversibly reduced state unlike Streptolysin S which is stable in the presence of oxygen. Another difference is that that SLO is antigenic while SLS is non antigenic due to its small size.

References

Bacterial
toxins
Mycotoxins
Invertebrates
scorpion: Androctonus australis hector insect toxin, Charybdotoxin, Maurotoxin, Agitoxin, Margatoxin, Slotoxin, Scyllatoxin, Hefutoxin, Lq2, Birtoxin, Bestoxin, BmKAEP, Phaiodotoxin, Imperatoxin  ·
spider: Latrotoxin (Alpha-latrotoxin) · CSTX  · Cupiennins  · PhTx3 · Stromatoxin · Vanillotoxin  · Huwentoxin
mollusca: Conotoxin · Eledoisin · Onchidal · Saxitoxin · Tetrodotoxin
Vertebrates
note: some toxins are produced by lower species and pass through intermediate species

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