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Recombinant Vibriocholerae Toxin B

Recombinant Vibriocholerae Toxin B is produced by our E.coli expression system and the target gene encoding Thr22-Asn124 is expressed.

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Description

Reference ESCIT133
Size 10ug
Molecular Weight 11.8 KDa
Purity >95% by SDS-PAGE.
Endotoxin <1 EU/µg
Biological Activity

Other names: Cholera enterotoxin subunit B;Cholera enterotoxin B chain;Cholera enterotoxin gamma chain;Choleragenoid;ctxB;toxB

 

Redissolve: Always centrifuge tubes before opening.Do not mix by vortex or pipetting.
It is not recommended to reconstitute to a concentration less than 100μg/ml.
Dissolve the lyophilized protein in distilled water.
Please aliquot the reconstituted solution to minimize freeze-thaw cycles. 

 

Storage: Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

 

Shipping Condition: Ambient temperature.

 

Background: Cholera toxin is protein complex secreted by the bacterium Vibrio cholerae. It is responsible for the massive, watery diarrhea characteristic of cholera infection. Cholera enterotoxin subunit B (CTXB) pentameric ring directs the A subunit to its target by binding to the GM1 gangliosides present on the surface of the intestinal ESCIithelial cells. It can bind five GM1 gangliosides. It has no toxic activity by itself.