Abstract：
:Indian cobra (Naja naja) envenomation is frequently reported across Indian subcontinent. Geographical differences in the venom composition of a particular species of snake often leads to inconsistencies in the antivenom neutralization. Consequently, determining the venom proteome from every locale is necessary for the production of effective antivenom. In this study, we deciphered the proteome composition of N. naja venom (NnV) from southern India (SI) by label-free quantitative proteomics that identified 45 proteins (toxins) belonging to 14 venom protein families when searched against Elapidae (taxid: 8602) protein entries in the non-redundant NCBI database. Low molecular mass (<15 kDa) toxins such as PLA2 (18.2%) and 3FTx (37.4%) are the most abundant enzymatic and non-enzymatic proteins, respectively, in SI NnV. Nevertheless, the relative abundance of 3FTxs in SI NnV was found to be lower than the relative abundance of these toxins in previously determined eastern and western India NnV samples. Immuno-recognition and in vitro neutralization of some enzymatic activities and pharmacological properties of SI NnV by commercial polyvalent antivenom evidently demonstrated poor recognition of the most abundant low molecular mass toxins of SI NnV. This finding points to the need for new strategies for antivenom production for the successful treatment of cobra bite.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Chanda A,Mukherjee AKdoi
10.1016/j.ijbiomac.2020.05.106subject
Has Abstractpub_date
2020-10-01 00:00:00pages
224-232eissn
0141-8130issn
1879-0003pii
S0141-8130(20)33258-Xjournal_volume
160pub_type
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