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Pàgina 1 des de 26 resultats
Naja atra cardiotoxins enhance the protease activity of chymotrypsin.
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Snake venom cardiotoxins (CTXs) present diverse pharmacological functions. Previous studies have reported that CTXs affect the activity of some serine proteases, namely, chymotrypsin, subtilisin, trypsin, and acetylcholinesterase. To elucidate the mode of action of CTXs, the interaction of CTXs with
Inhibition of Naja nigricolis (Reinhardt) venom protease activity by Luffa egyptiaca (Mill) and Nicotiana rustica (Linn) extracts.
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Luffa egyptiaca and Nicotiana rustica are used in traditional medicine to treat snakebites and were evaluated for inhibitory activities on Naja nigricolis venom protease. The aqueous and ethanolic extracts of L. egyptiaca significantly reduced the maximum velocity (Vmax) and the computed index of
Differential action of proteases from Trimeresurus malabaricus, Naja naja and Daboia russellii venoms on hemostasis.
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The action of venom proteases and their role in hemostasis has been compared in the venoms of Trimeresurus malabaricus, Daboia russellii and Naja naja from the Southern region of Western Ghats, India. These venoms exhibit varying amounts of proteolytic activity and also influence hemostasis
The anticancer effect of cytotoxin 1 from Naja atra Cantor venom is mediated by a lysosomal cell death pathway involving lysosomal membrane permeabilization and cathepsin B release.
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The cytotoxin family of cobra venom proteins, also called cardiotoxins, can activate both necrotic and apoptotic cell death pathways in cancer cells. Cytotoxin 1 (CTX1)from Naja atra Cantor venom is a 60 amino acid, 6698 Da protein with as yet untested anticancer efficacy and cell selectivity. We
Purification, characterization and primary structure of a chymotrypsin inhibitor from Naja atra venom.
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A chymotrypsin inhibitor, designated NA-CI, was isolated from the venom of the Chinese cobra Naja atra by three-step chromatography. It inhibited bovine alpha-chymotrypsin with a Ki of 25 nM. The molecular mass of NA-CI was determined to be 6403.8 Da by matrix-assisted laser-desorption ionization
Molecular diversity in venom proteins of the Russell's viper (Daboia russellii russellii) and the Indian cobra (Naja naja) in Sri Lanka.
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To examine the molecular diversity of the venom proteins of the Russell's viper (Daboia russellii russellii) and the Indian cobra (Naja naja) in Sri Lanka, we isolated 38 venom proteins through a combination of anion exchange chromatography followed by reversed-phase high performance liquid
Primary structure of a cytotoxin-like basic protein from Naja naja naja (Indian cobra) venom.
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The complete amino acid sequence of a cytotoxin-like basic protein (CLBP) from the venom of Naja naja naja (Indian Cobra) was determined by manual degradation using a 4-dimethylaminoazobenzene-4'-isothiocyanate double-coupling method. Peptide fragments obtained by chemical cleavage with cyanogen
The amino acid sequences of two postsynaptic neurotoxins isolated from Malayan cobra (Naja naja sputatrix) venom.
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The complete amino acid sequences of two postsynaptic neurotoxins (toxin-3 and toxin-5) isolated from Malayan cobra (Naja naja sputatrix) venom were determined by direct automated Edman degradation of peptides obtained from digests with various proteases. Toxin-3 and toxin-5 are both short-chain
A comparative study of cobra (Naja) venom enzymes.
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1. The L-amino acid oxidase, hyaluronidase, alkaline phosphomonoesterase, protease, phosphodiesterase, acetylcholinesterase, phospholipase A and 5'-nucleotidase activities of 47 samples of venoms from all the six species of cobra (Naja), including five subspecies of Naja naja, were examined. 2. The
Metabolites from the citrus extracts inhibit the activity of selected proteins in Indian Cobra (Naja naja) venom.
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Isolation and characterization of a cytotoxin P4 from the venom of Naja nigricollis nigricollis preferentially active on tumor cells.
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Cytotoxin P4 was isolated from the venom of Naja nigricollis nigricollis in three steps and contained 55% of the crude cytotoxic activity. It had a molecular weight of 8 KD, was stable over a pH range of 1-11 and in boiling water for at least 15 min. It had no measurable enzymatic activities, but
Ophiophagus hannah venom: proteome, components bound by Naja kaouthia antivenin and neutralization by N. kaouthia neurotoxin-specific human ScFv.
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Venomous snakebites are an important health problem in tropical and subtropical countries. King cobra (Ophiophagus hannah) is the largest venomous snake found in South and Southeast Asia. In this study, the O. hannah venom proteome and the venom components cross-reactive to N. kaouthia monospecific
Inhibition of Naja naja venom enzymes by the methanolic extract of Leucas aspera and its chemical profile by GC-MS.
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OBJECTIVE
The present investigation was aimed at evaluating the anti-ophidian properties of ethnomedicinal herb Leucas aspera against Indian cobra, Naja naja venom enzymes.
METHODS
Methanolic extract of Leucas aspera was evaluated, in vitro, for its ability to inhibit the major enzyme activities of
Antitoxin activity of aqueous extract of Cyclea peltata root against Naja naja venom.
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Snakebites are a significant and severe global health problem. Till date, anti-snake venom serum is the only beneficial remedy existing on treating the snakebite victims. As antivenom was reported to induce early or late adverse reactions to human beings, snake venom neutralizing potential for
MOLECULAR MODEL OF CYTOTOXIN-1 FROM NAJA MOSSAMBICA MOSSAMBICA VENOM IN COMPLEX WITH CHYMOTRYPSIN.
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Snake venom is a myriad of biologically active proteins and peptides. Three finger toxins are highly conserved in their molecular structure, but interestingly possess diverse biological functions. During the course of evolution the introduction of subtle mutations in loop regions and slight
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