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Home > Products > Toxin > Native V. cholerae Cholera Toxin B subunit, FITC labeled

Native V. cholerae Cholera Toxin B subunit, FITC labeled

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Product Overview:
This product is the cholera toxin B subunit labeled with fluorescein isothiocyanate (FITC, 389.4 Da). The extent of labeling is ~1 mole of FITC per mole of CTB.
Cholera toxin belongs to the AB5-subunit family of toxins. The native hexameric protein has a molecular mass of ~85 kDa and contains two subunits. It consists of a single A subunit (~27.2 kDa), responsible for the ADP-ribosylation activity, and five B subunits (~11.6 kDa each), which are arranged as a pentameric ring with an apparent 5-fold symmetry and are associated with the cell surface receptor binding and subsequent internalization (transmembrane transport) of the enzymatic component.
V. cholerae
V. cholerae
Lyophilized powder containing Tris buffer salts, sodium chloride, sodium EDTA and sodium azide.
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 second antibody. 50% saturation of binding was achieved with 0.01-1 μg of the cholera toxin B subunit-FITC conjugate per mL.
Molecular Mass:
12 kDa
This product is stable 2 years when stored properly.
Store at 2-8 centigrade
Cholera toxin is soluble in water at a concentration of 10 mg/ml. Swirl bottles gently during reconstitution. Avoid vigorous pipetting of solutions that may lead to foaming. Solutions can be filtered through a 0.2 mm filter.
CTB; Cholera Toxin B subunit

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Optional requirements on this protein +Expand
C-fusion   N-fusion  Non-tagged
His   GST  Fc  Others
<1.0 eu/μg   <0.1 eu/μg  <0.01 eu/μg  Not required
Monomer Isolation   Dimer Isolation   Not required
>80% by SDS-PAGE   >90% by SDS-PAGE  >95% by SDS-PAGE  Others
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45-1 Ramsey Road, Shirley, NY 11967, USA
USA: 1-631-559-9269  1-631-448-7888
Europe: 44-207-097-1828
FAX: 1-631-938-8127

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