Immunochemical Characterization of Naja naja siamensis Toxin and of a Chemically Modified Toxin
نویسندگان
چکیده
منابع مشابه
Reoxidation and renaturation studies on the main toxin of Naja naja samarensis.
The main toxin of Naja naja samarensis is a very small and rigid protein (Mr 6850, 8 cysteines). When fully reduced, it regains its native conformation by a mechanism involving a rapid cysteine oxidation and a slower, less temperature-dependent disulfide exchange. In a native-like form of the protein we observed a population whose cysteines were incompletely reoxidized. When intermediates with ...
متن کاملThe refined crystal structure of alpha-cobratoxin from Naja naja siamensis at 2.4-A resolution.
The crystal structure of the "long" alpha-neurotoxin alpha-cobratoxin was refined to an R-factor of 19.5% using 3271 x-ray data to 2.4-A resolution. The polypeptide chain forms three loops, I, II, III, knotted together by four disulfide bridges, with the most prominent, loop II, containing another disulfide close to its lower tip. Loop I is stabilized by one beta-turn and two beta-sheet hydroge...
متن کاملEffect of membrane toxin 12 isolated from Naja naja atra on proliferation and invasion of human bladder cancer EJ cells.
We investigated the effect of membrane toxin 12 (MT-12), isolated from Naja naja atra, a species of Chinese Cobra, on the proliferation and invasion of human bladder cancer EJ cells and studied its mechanisms using MTT assay, Transwell chamber invasion assay, scanning electron microscopy and flow cytometry. The results indicated that MT-12 inhibited the proliferation of bladder cancer cells in ...
متن کاملProteomic characterization of the thermostable toxins from Naja naja venom
Naja naja snake venom presents abundant thermostable peptides. Many of them possess useful pharmacological activity that may be employed for drug development. For the proteomic characterization of such toxins, in the present study, Naja naja venom solution was heated up to 100°C for 10, 30, 60, 120, 180 and 300 minutes and protein fractions of non-heated and heated venom were analyzed by twodim...
متن کاملCHARACTERIZATION OF AN ANTICOAGULANT AGENT IN THE VENOM OF IRANIAN COBRA (NAJA NAJA OXIANA).
Snake venoms contain a rich variety of factors which affect blood coagulation. There have been few reports on the anticoagulant activity of the venom of different cobras, but no such observations have been made on the Iranian cobra, although a procoagulant factor has been described. In this study an anticoagulant factor has been purified from the venom of Naja naja oxiana using gel filtrat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1974
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1974.tb03554.x