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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Enrichment of the antibodies against the C-terminus of Taiwan cobra cobrotoxin using dimeric glutaraldehyde-modified toxin as an immunogen.

The repertoire of antibodies producing by immunizing rabbits with cobrotoxin and dimeric glutaraldehyde-modified cobrotoxin (dGA-cobrotoxin) was analyzed by studying the immunoreactivity of the two antibody preparations toward cobrotoxin, GA-cobrotoxin and recombinant cobrotoxin. The results of enzyme-linked immunoassay revealed that the two antibody preparations exhibited a higher reactivity against their cognate antigen. Moreover, different behavior was observed for the reactivity of the two antibody preparations against GA-cobrotoxin and recombinant cobrotoxin. Notably, distortion of disulfide linkages at the C-terminus resulted in a reduced decrease in the antigenic activity of recombinant cobrotoxin toward anti-cobrotoxin antibodies compared to anti-dGA-cobrotoxin antibodies. Affinity purification of the antibodies against the C-terminus of cobrotoxin revealed that its amount represented 77% and 35.5% of the total anti-dGA-cobrotoxin antibodies and the total anti-cobrotoxin antibodies, respectively. These findings suggest that the antibody preparation elicited by dGA-cobrotoxin enriches the content of antibodies recognizes the C-terminal region of native cobrotoxin.[1]

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