Composite venom proteome of the big four Indian snakes

The composite venom proteome of the 'Big Four' Indian snakes refers to the collective protein profile of the four species responsible for the vast majority of snakebite morbidity and mortality in South Asia: the Spectacled Cobra (Naja naja), Common Krait (Bungarus caeruleus), Russell's Viper (Daboia russelii), and Saw-scaled Viper (Echis carinatus) (Senji Laxme et al., 2019, PLOS Neglected Tropical Diseases). This proteome is a highly complex mixture containing hundreds of distinct toxins, primarily dominated by phospholipase A2 (PLA2), three-finger toxins (3FTxs), snake venom metalloproteinases (SVMPs), and serine proteases (SVSPs) (Casewell et al., 2020, Nature Reviews Disease Primers). These components act synergistically to induce a range of clinical pathologies, including life-threatening neuromuscular paralysis, systemic hemorrhage, and severe local tissue necrosis. While not a single molecular target, this proteome serves as the functional target for polyvalent antivenoms, which utilize polyclonal antibodies to neutralize the diverse array of toxins (World Health Organization, 2019). Understanding the specific composition and intra-species variation of this proteome is critical for the development of more effective, geographically relevant antivenoms and next-generation small-molecule therapeutics. The term is considered 'incorrect' as a single target because it represents a massive collection of distinct proteins from multiple species rather than a specific, individual therapeutic receptor or enzyme.

Other names

Big Four snake venomIndian snake venom proteomeVenom of Naja naja, Bungarus caeruleus, Daboia russelii, and Echis carinatus

Neutralization of diverse toxic venom components through antibody-mediated binding (antivenom) or targeted inhibition of specific enzymatic toxin families such as PLA2 or metalloproteinases by small molecule inhibitors.