Danger in the Canopy. Comparative Proteomics and Bioactivities of the Venoms of the South American Palm Pit Viper Bothrops bilineatus Subspecies bilineatus and smaragdinus and Antivenomics of B. b. bilineatus (Rondônia) Venom against the Brazilian Pentabothropic Antivenom.

Journal of Proteome Research
Libia SanzCleópatra A S Caldeira

Abstract

We report a structural and functional proteomics characterization of venoms of the two subspecies (Bothrops bilineatus bilineatus and B. b. smaragdinus) of the South American palm pit viper from the Brazilian state of Rondônia and B. b. smaragdinus from Perú. These poorly known arboreal and mostly nocturnal generalist predators are widely distributed in lowland rainforests throughout the entire Amazon region, where they represent an important cause of snakebites. The three B. bilineatus spp. venom samples exhibit overall conserved proteomic profiles comprising components belonging to 11 venom protein classes, with PIII (34-40% of the total venom proteins) and PI (8-18%) SVMPs and their endogenous tripeptide inhibitors (SVMPi, 8-10%); bradykinin-potentiating-like peptides (BBPs, 10.7-15%); snake venom serine proteinases (SVSP, 5.5-14%); C-type lectin-like proteins (CTL, 3-10%); phospholipases A2 (PLA2, 2.8-7.6%); cysteine-rich secretory proteins (CRISP, 0.9-2.8%); l-amino acid oxidases (LAO, 0.9-5%) representing the major components of their common venom proteomes. Comparative analysis of the venom proteomes of the two geographic variants of B. b. smaragdinus with that of B. b. bilineatus revealed that the two Brazilian taxa sha...Continue Reading

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May 1, 2021·Biochemical Society Transactions·Juan J CalveteCleópatra A S Caldeira

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