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Efts and adult specimens (n = 142) of the red-spotted newt Notophthalmus viridescens from various locations in Canada and USA were analyzed for the presence of tetrodotoxin (TTX) and of its analogues 6-epitetrodotoxin and 11-oxotetrodotoxin. Considerable individual variations in toxin levels were found within and among populations from New Hampshire, New York, Pennsylvania, and Virginia ranging from...
Zhaoermia mangshanensis (formerly Trimeresurus mangshanensis, Ermia mangshanensis) represents a monotypic genus of pitviper known only from Mt Mang in China's Hunan Province, and is among the largest and most spectacular of Asian venomous snakes. The venom of Zhaoermia exhibits high coagulant activity on bovine and human fibrinogen and human plasma, high phosphodiesterase and arginine ester hydrolytic...
The sequence of a long-chain neurotoxin (71 amino acid residues, 10 half-cystines) from the venom of the African banded water cobra (Boulengerina annulata) was determined by Edman degradation. It exhibits high sequence similarity with long-chain neurotoxins from the venoms of four species of African cobras (genus Naja), which are collectively more similar to the Boulengerina toxin than to those of...
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