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Diphtheria toxin CRM197
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Catalog No. TP4310 Copy Product Info
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Diphtheria toxin CRM197 is a nontoxic variant of the diphtheria toxin, characterized by a single mutation [substitution of glycine with glutamic acid at position 52], which eliminates its toxicity. CRM197 is widely used as a carrier protein in vaccines.
Diphtheria toxin CRM197
Cas No. 92092-36-9
| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 10 mg | Inquiry | Inquiry | Inquiry | |
| 50 mg | Inquiry | Inquiry | Inquiry |
For In stock only · Estimated delivery: USA Stock (1-2 days) Global Stock (5-7 days)
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For research use only—not for human use. No sales to individuals. Use as intended only.
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Product Introduction
Bioactivity
Chemical Properties
Storage & Solubility Information
| Description | Diphtheria toxin CRM197 is a nontoxic variant of the diphtheria toxin, characterized by a single mutation [substitution of glycine with glutamic acid at position 52], which eliminates its toxicity. CRM197 is widely used as a carrier protein in vaccines. |
| In vitro | Diphtheria toxin CRM197 is an inactive and non-toxic variant of diphtheria toxin characterized by a single amino acid change (G52E). As a naturally safe carrier protein, CRM197 is ideal for use in conjugate vaccines targeting encapsulated bacteria, and it is employed in the global vaccination of children against Haemophilus influenzae, pneumococcus, and meningococcus. In contrast, the active diphtheria toxin, secreted as a single polypeptide by lysogenic strains of Corynebacterium diphtheriae, causes diphtheria by entering human cells and disrupting protein synthesis. |
| Cas No. | 92092-36-9 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year Shipping with blue ice/Shipping at ambient temperature. |
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In Vivo Formulation Calculator (Clear solution)
Please enter your animal experiment information in the following box and click Calculate to obtain the stock solution preparation method and in vivo formula preparation method:
For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, and a total of 10 animals are to be administered, using a formulation of 
10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH2O , the resulting working solution concentration would be 2 mg/mL.Stock Solution Preparation:
Dissolve 2 mg of the compound in 100 μL DMSO to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
Preparation of the In Vivo Formulation:
1) Add 100 μL of the DMSO stock solution to 400 µL PEG300 and mix thoroughly until the solution becomes clear.
2) Add 50 µL Tween 80 and mix well until fully clarified.
3) Add 450 µL Saline,PBS or ddH2O and mix thoroughly until a homogeneous solution is obtained.
This example is provided solely to demonstrate the use of the In Vivo Formulation Calculator and does not constitute a recommended formulation for any specific compound. Please select an appropriate dissolution and formulation strategy based on your experimental model and route of administration.
Dose Conversion
You can also refer to dose conversion for different animals. More Dose Conversion
Tech Support
Please see Inhibitor Handling Instructions for more frequently ask questions. Topics include: how to prepare stock solutions, how to store products, and cautions on cell-based assays & animal experiments, etc
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Related Tags: Diphtheria toxin CRM197 in vitro
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