Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

C9903

Sigma-Aldrich

Cholera Toxin B subunit

≥95% (SDS-PAGE), lyophilized powder, enterotoxin

Synonym(s):

CTB

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

MDL number:
MFCD02356522
UNSPSC Code:
12352200
PubChem Substance ID:
329775212
NACRES:
NA.77

product name

Cholera Toxin B subunit, ≥95% (SDS-PAGE), lyophilized powder

Quality Level

300

Assay

≥95% (SDS-PAGE)

form

lyophilized powder

mol wt

~12 kDa

composition

Protein, ~5% Lowry

impurities

≤0.5% Cholera toxin A subunit (SDS-PAGE)

solubility

H2O: 10 mg/mL

storage temp.

2-8°C

SMILES string

CCOc1ccccc1C(=O)Nc2ccc(Cl)c(c2)C(F)(F)F

InChI

1S/C16H13ClF3NO2/c1-2-23-14-6-4-3-5-11(14)15(22)21-10-7-8-13(17)12(9-10)16(18,19)20/h3-9H,2H2,1H3,(H,21,22)

InChI key

YDXZSNHARVUYNM-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Cholera Toxin is a heterohexameric AB5 enterotoxin. Cholera Toxin B subunit is the the B subunit pentamer of cholera toxin produced by Vibrio cholera. It is generally involved in the cell trafficking and signalling machineries.

Application

Cholera Toxin B subunit has been used:
  • for macrophage stimulation and i.p. injection in a study to determine the endotoxin sensitivity of Caspase-4.
  • in transganglionic and retrograde tract-tracing method combined with dual-immunofluorescence histochemistry of adult rat Vmes neuron cells.

Biochem/physiol Actions

The cholera toxin B subunit is used for track tracing in neurological research, taking advantage of GM1 ganglioside binding and retrograde transport. Tissue culture cells treated with cholera toxin are not killed and tissues of animals do not become necrotic.

Features and Benefits

This compound is a featured product for Cyclic Nucleotide research. Click here to discover more featured Cyclic Nucleotide products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

Packaging

Package size based on protein content

Physical form

Lyophilized powder containing Tris buffer salts, sodium chloride, sodium azide, and sodium EDTA.

Reconstitution

When reconstituted with water to a final concentration of 1 mg of CTB per ml, the solution will contain 0.05 M Tris buffer, pH 7.5, 0.2 M NaCl, 3 mM NaN3 and 1 mM sodium EDTA.

Analysis Note

Activity measured by ELISA using ganglioside GM1-coated multiwell plates, rabbit anti-Cholera toxin B subunit antibodies, and peroxidase-labeled goat anti-rabbit IgG as the secondary antibody. 50% saturation of binding was achieved with 0.05-1 μg of Cholera toxin B subunit per mL.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H312 + H332,H412

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Jung Won Youm et al.
FEBS letters, 579(30), 6737-6744 (2005-11-29)
Beta amyloid (Abeta) is believed one of the major pathogens of Alzheimer's disease (AD), and the reduction of Abeta is considered a primary therapeutic target. Immunization with Abeta can reduce Abeta burden and pathological features in transgenic AD model mice.
Lolke De Haan et al.
Molecular membrane biology, 21(2), 77-92 (2004-06-19)
Cholera toxin (Ctx) from Vibrio cholerae and its closely related homologue, heat-labile enterotoxin (Etx) from Escherichia coli have become superb tools for illuminating pathways of cellular trafficking and immune cell function. These bacterial protein toxins should be viewed as conglomerates
R G Zhang et al.
Journal of molecular biology, 251(4), 550-562 (1995-08-25)
Cholera toxin, a heterohexameric AB5 enterotoxin released by Vibrio cholera, induces a profuse secretory diarrhea in susceptible hosts. Choleragenoid, the B subunit pentamer of cholera toxin, directs the enzymatic A subunit to its target by binding the GM1 gangliosides exposed
You Wang Pang et al.
The Journal of comparative neurology, 498(1), 129-141 (2006-07-21)
The major neuronal components of the trigeminal mesencephalic nucleus (Vmes) are primary afferent neurons that convey proprioceptive information from the cranioorofacial regions. In the present study, we examined expression of vesicular glutamate transporters (VGLUTs), VGLUT1 and VGLUT2, in the primary
Fernanda Rosa et al.
Frontiers in immunology, 11, 607609-607609 (2020-12-29)
The impact of human milk (HM) or dairy milk-based formula (MF) on the large intestine's metabolome was not investigated. Two-day old male piglets were randomly assigned to HM or MF diet (n = 26/group), from postnatal day (PND) 2 through
View All Related Papers

Articles

Discover Bioactive Molecules for Nucleotides

Cyclic nucleotides like cAMP modulate cell function via PKA activation and ion channels.

Discover Bioactive Molecules for Nucleotides

Cyclic nucleotides like cAMP modulate cell function via PKA activation and ion channels.

Discover Bioactive Molecules for Nucleotides

Cyclic nucleotides like cAMP modulate cell function via PKA activation and ion channels.

Discover Bioactive Molecules for Nucleotides

Cyclic nucleotides like cAMP modulate cell function via PKA activation and ion channels.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service