Technical Data
Cholera Toxin, beta (Vibrio cholerae, Cholera Enterotoxin beta, Choleragenoid, CTX B, CTXB, CTX-B, TOXB, VC1456)
Cholera toxin is an oligomeric protein of MW 84kD and consists of a single A subunit surrounded by five B subunits. It is a potent activator of adenylate cyclase and is the pathogenic agent responsible for the symptoms of cholera. The B subunit (choleragenoid) is responsible for the binding of the holotoxin to G M1 ganglioside receptors on mammalian cell surfaces and facilitates entrance of the A subunit into the cell. The A subunit bears the ADP-ribosyl-transferase activity, which deregulates the G sprotein causing activation of adenylate cyclase. Due to the ubiquitous occurrence of the GM1 ganglioside receptor on eukaryotic cell membranes, cholera toxin activates adenylate cyclase in a wide variety of systems.
Cholera toxin has become a powerful research tool not only in microbiology, but in the fields of physiology, cell biology and biochemistry, as well. Because of the effect on adenylate cyclase, cholera toxin and its purified A subunit are frequently used for the study of signal transduction mechanisms. In addition, cholera toxin acts as an adjuvant through the stimulation of B-lymphocytes. The cholera toxin B subunit alone is used for track tracing in neurological research, taking advantage of GM1 ganglioside binding and retrograde transport.

Suitable for use in ELISA and Immunohistochemistry. Other applications have not been tested.

Recommended Dilutions:
Immunohistochemistry: Frozen sections
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
MabIgG13j4Affinity Purified
200ug-20CBlue IceMouse
Vibrio cholera
Purified by Protein G affinity chromatography
Supplied as a liquid in PBS, pH 7.2, 0.09% sodium azide.
Recognizes the labile entertoxin normally associated with Vibrio cholerae and reacts with an epitope on the beta chain. No crossreactivity with various E. coli serotypes.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Zhao, H. et al. (2012) Large Membrane Domains in Hair Bundles Specify Spatially Constricted Radixin Activation J. Neurosci 32: 46009. 2. Mahler, S.V. et al. (2012) Fos Activation of Selective Afferents to Ventral Tegmental Area during Cue-Induced Reinstatement of Cocaine Seeking in Rats.
J Neurosci. 32: 13309-25.