Cholera toxin, the pathogenic agent of cholera, is made of two subunits, A (27 kDa) and B (12 kDa) assembled with the stoichiometry AB5. The B-subunit binds to specific receptors, the monosialogangliosides GM1, located in the membrane of intestinal epithelial cells. The A1 fragment of the A-subunit is translocated through the membrane of the host cell, where it catalyses the ADP-ribosylation of the Gsa regulatory component of the adenylate cyclase complex. The resulting increased level of cyclic AMP promotes a wide variety of actions, including the secretion of chloride ions in the case of intestinal epithelial cells.
The antiserum reacts versus Cholera toxin, but shows no reaction versus Staphylococcal enterotoxin A, Staphylococcal enterotoxin B and Pseudomonas exotoxin A (protein concentration: 50-500 ng/dot). The product has not been tested for neutralization potency against active Cholera toxin.
Immunogen
toxin from Vibrio cholerae
Application
Anti-Cholera Toxin antibody produced in rabbit has been used in:
Cholera toxin (CT), a multifunctional protein plays a role in the immune system. It possesses immunomodulatory, adjuvant properties and also acts as an anti-inflammatory agent. Its immunomodulatory properties can be utilized to treat several autoimmune disorders. CT can serve as one of the best model of a multifunctional protein.
Preparation Note
delipidized
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We have defined the in vivo and in vitro metabolic fate of internalized cholera toxin (CT) in the endosomal apparatus of rat liver. In vivo, CT was internalized and accumulated in endosomes where it underwent degradation in a pH-dependent manner.
This study investigated the immune response of broiler chickens with oral treatment of a Lactobacillus spp. pool (PL) associated with microencapsulated recombinant proteins flagellin (FliC) and the subunit B of cholera toxin (CTB). Immune responses were evaluated by measuring IgA
Journal of bacteriology, 198(11), 1621-1630 (2016-03-24)
Shiga toxin (Stx)-producing Escherichia coli (STEC) is a major cause of foodborne illness, including the life-threatening complication hemolytic-uremic syndrome. The German outbreak in 2011 resulted in nearly 4,000 cases of infection, with 54 deaths. Two forms of Stx, Stx1 and
Purified cholera toxin B subunit from transgenic tobacco plants possesses authentic antigenicity
Wang XG, et al.
Biotechnology and Bioengineering, 72(4), 490-494 (2001)
Infection and immunity, 83(9), 3381-3395 (2015-06-10)
Diverse environmental stimuli and a complex network of regulatory factors are known to modulate expression of Vibrio cholerae's principal virulence factors. However, there is relatively little known about how metabolic factors impinge upon the pathogen's well-characterized cascade of transcription factors
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