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Citations & References (56)
Invitrogen™
Cholera Toxin Subunit B (Recombinant), Alexa Fluor™ 594 Conjugate
Molecular Probes™ cholera toxin conjugates are made from a recombinant version of the B subunit only. This allows us toRead more
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| Catalog Number | Quantity |
|---|---|
| C34777 | 100 μg |
| C22842 | 500 μg |
Catalog number C34777
Price (CNY)
3,165.00
Online Exclusive
Ends: 31-Dec-2025
4,289.00Save 1,124.00 (26%)
Each
Quantity:
100 μg
Price (CNY)
3,165.00
Online Exclusive
Ends: 31-Dec-2025
4,289.00Save 1,124.00 (26%)
Each
Molecular Probes™ cholera toxin conjugates are made from a recombinant version of the B subunit only. This allows us to provide a very high-purity product that is completely free of the toxic A subunit. Cholera toxin B subunit (CT-B) attaches to cells by binding to ganglioside GM1, making it a powerful tool for retrograde labeling of neurons. This tracer has been used in a variety of applications, including tracing of rat forebrain afferents, projections of the parabrachial region, and neurons of the urinary bladder wall. When used in neuronal tracing applications, CT-B is typically introduced by pressure injection or by iontophoretic injection into neural tissue.
Cholera Toxin Subunit B Specifications:
• Label (Ex/Em): Alexa Fluor™ 594 (590/617 nm)
• At neutral pH, the 11.4 kDa B subunit exists as a 57 kDa pentamer
• Lyophilized product can be dissolved in buffer (e.g., PBS) for use
Cholera Toxin Subunit B for Studying Lipid Rafts
More recently, researchers have found that CT-B can be used as a marker for lipid rafts, which are membrane microdomains enriched in cholesterol and sphingolipids thought to be important in cell signaling. For lipid raft staining, cells are first incubated with fluorescent CT-B. Then, an anti–CT-B antibody is added to crosslink the CT-B in the lipid rafts into distinct patches on the plasma membrane. These patches are easily visualized by fluorescence microscopy. In addition to individual fluorescent CT-B conjugates, we also offer Vybrant™ Lipid Raft Labeling Kits that contain the Alexa Fluor™ 488, Alexa Fluor™ 555, or Alexa Fluor™ 594 dye conjugates of CT-B, an anti–CT-B antibody, and a detailed protocol for labeling and preparing cells for fluorescence microscopy.
Find More CT-B Conjugates
We offer various CT-B conjugates. Review Protein Conjugates—Section 14.7 in the Molecular Probes™ Handbook for more information on these tracers.
For Research Use Only. Not for human or animal therapeutic or diagnostic use.
Cholera Toxin Subunit B Specifications:
• Label (Ex/Em): Alexa Fluor™ 594 (590/617 nm)
• At neutral pH, the 11.4 kDa B subunit exists as a 57 kDa pentamer
• Lyophilized product can be dissolved in buffer (e.g., PBS) for use
Cholera Toxin Subunit B for Studying Lipid Rafts
More recently, researchers have found that CT-B can be used as a marker for lipid rafts, which are membrane microdomains enriched in cholesterol and sphingolipids thought to be important in cell signaling. For lipid raft staining, cells are first incubated with fluorescent CT-B. Then, an anti–CT-B antibody is added to crosslink the CT-B in the lipid rafts into distinct patches on the plasma membrane. These patches are easily visualized by fluorescence microscopy. In addition to individual fluorescent CT-B conjugates, we also offer Vybrant™ Lipid Raft Labeling Kits that contain the Alexa Fluor™ 488, Alexa Fluor™ 555, or Alexa Fluor™ 594 dye conjugates of CT-B, an anti–CT-B antibody, and a detailed protocol for labeling and preparing cells for fluorescence microscopy.
Find More CT-B Conjugates
We offer various CT-B conjugates. Review Protein Conjugates—Section 14.7 in the Molecular Probes™ Handbook for more information on these tracers.
For Research Use Only. Not for human or animal therapeutic or diagnostic use.
For Research Use Only. Not for use in diagnostic procedures.
Specifications
Label TypeAlexa Fluor Dyes
Product LineAlexa Fluor
Protein FormRecombinant
Protein SubtypeCholera Toxin
Quantity100 μg
Shipping ConditionRoom Temperature
ConjugateAlexa Fluor 594
FormLyophilized
RecombinantRecombinant
Unit SizeEach
Contents & Storage
Store in freezer (-5 to -30°C) and protect from light.
Frequently asked questions (FAQs)
I injected a fluorescent tracer, but cannot detect it after tissue is fixed and sectioned. What am I doing wrong?
Do you have a tracer that will only transport retrograde?
How do I know which tracer to choose for my experiment?
What products do you have for neuronal tracing?
Citations & References (56)
Citations & References
Abstract
Cocaine evokes projection-specific synaptic plasticity of lateral habenula neurons.
Journal:J Neurosci
PubMed ID:22956853
Addictive drugs share the ability to increase dopamine (DA) levels and trigger synaptic adaptations in the mesocorticolimbic system, two cellular processes engaged in the early stages of drug seeking. Neurons located in the lateral habenula (LHb) modulate the activity of DA neurons and DA release, and adaptively tune goal-directed behaviors.
Localization of cystic fibrosis transmembrane conductance regulator to lipid rafts of epithelial cells is required for Pseudomonas aeruginosa-induced cellular activation.
Journal:J Immunol
PubMed ID:14688350
'The cystic fibrosis (CF) transmembrane conductance regulator (CFTR) protein is an epithelial cell receptor for the outer core oligosaccharide of the Pseudomonas aeruginosa LPS. Bacterial binding leads to CFTR-dependent bacterial internalization, initiation of NF-kappaB nuclear translocation, cellular desquamation, and eventual apoptosis of the infected cells, all of which are critical
Chondrocytes utilize a cholesterol-dependent lipid translocator to externalize phosphatidylserine.
Journal:Biochemistry
PubMed ID:16519527
'During endochondral ossification, growth plate chondrocytes release plasma membrane (PM) derived matrix vesicles (MV), which are the site of initial hydroxyapatite crystal formation. MV constituents which facilitate the mineralization process include the integral membrane ectoenzymes alkaline phosphatase (ALPase) and nucleotide pyrophosphatase phosphodiesterase (NPP1/PC-1), along with a phosphatidylserine- (PS-) rich membrane
Inhibition of caveolar uptake, SV40 infection, and beta1-integrin signaling by a nonnatural glycosphingolipid stereoisomer.
Journal:J Cell Biol
PubMed ID:17371832
'Caveolar endocytosis is an important mechanism for the uptake of certain pathogens and toxins and also plays a role in the internalization of some plasma membrane (PM) lipids and proteins. However, the regulation of caveolar endocytosis is not well understood. We previously demonstrated that caveolar endocytosis and beta1-integrin signaling are
Plasticity of B cell receptor internalization upon conditional depletion of clathrin.
Journal:Mol Biol Cell
PubMed ID:15716350
'B cell antigen receptor (BCR) association with lipid rafts, the actin cytoskeleton, and clathrin-coated pits influences B cell signaling and antigen presentation. Although all three cellular structures have been separately implicated in BCR internalization, the relationship between them has not been clearly defined. In this study, internalization pathways were characterized