Isolation, characterization and antigenic cross-reactivities of the major hemorrhagin from Cryptelytrops purpureomaculatus venom.
Indian J Exp Biol
;
2013 Dec; 51(12): 1063-1069
Article
in English
| IMSEAR
| ID: sea-150293
ABSTRACT
The major hemorrhagin from C. purpureomaculatus (mangrove pit viper) venom was purified to homogeneity and termed Maculatoxin. Maculatoxin has a molecular weight of 38 kDa as determined by SDS-PAGE. It is an acidic protein (pI= 4.2) and exhibited proteolytic and hemorrhagic activities (MHD10 = 0.84 μg in mice) but was not lethal to mice at a dose of 1 μg/g. The hemorrhagic activity of Maculatoxin was completely inactivated by EDTA and partially inhibited by ATP and citrate. The N-terminal sequence of Maculatoxin (TPEQQRFPPTYIDLGIFVDHGMYAT) shares a significant degree of homology with the metalloprotease domain of other venom hemorrhagins. Indirect ELISA showed anti-Maculatoxin cross reacted with protein components of many snake venoms. In the double-sandwich ELISA, however, anti-Maculatoxin cross-reacted only with venoms of certain species of the Trimeresurus (Asia lance-head viper) complex, and the results support the recent proposed taxonomy changes concerning the Trimeresurus complex
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Endopeptidases
/
Snake Venoms
/
Species Specificity
/
Chromatography, Gel
/
Trimeresurus
/
Cross Reactions
/
Animals
/
Mice
/
Molecular Weight
Language:
English
Journal:
Indian J Exp Biol
Year:
2013
Type:
Article
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