Venoms of New World Vinesnakes (Oxybelis aeneus and O. fulgidus)
| Autor: | William H. Heyborne, Stephen P. Mackessy |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Proteomics Arboreal locomotion Zoology Venom Toxicology medicine.disease_cause complex mixtures 01 natural sciences Anolis Predation 03 medical and health sciences Mice Oxybelis aeneus medicine Animals Toxins Biological Elapid Venoms 0303 health sciences Hemidactylus biology Toxin 010604 marine biology & hydrobiology 030302 biochemistry & molecular biology Arizona Colubridae Central America Lizards South America biology.organism_classification Oxybelis Snake Venoms |
| Zdroj: | Toxicon : official journal of the International Society on Toxinology. 190 |
| ISSN: | 1879-3150 |
| Popis: | Species of Oxybelis are extremely elongate arboreal snakes that are broadly distributed in the Americas, from extreme southeastern Arizona (USA) to central South America. Primarily feeding on lizards and birds, Oxybelis venoms are poorly known in general, but a prominent taxon-specific three-finger toxin (fulgimotoxin) was isolated from and is a prominent component of O. fulgidus venom; a homolog is also present in O. aeneus venom. As part of ongoing characterization of venoms from rear-fanged snakes, we describe here the composition of two broadly distributed species, O. aeneus and O. fulgidus. Venom proteomes were of very low complexity, and four protein families (LAAO, PIII SVMP, CRiSP and 3FTx) account for more than 90% of total protein composition. Venoms from both species are moderately toxic to mice and to Hemidactylus geckos, but they are nearly an order of magnitude more toxic to Anolis lizards (a native prey species). These results reflect a trend in colubrid venom composition that is becoming increasingly more common: the presence of taxon-specific toxins, specifically three-finger toxins, preferentially targeting lizards and/or birds. |
| Databáze: | OpenAIRE |
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