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Merck
CN

D2189

Recombinant CRM197 expressed in Pseudomonas fluorescens, [Glu52]- Diphtheria toxin

lyophilized powder

别名:

[Glu52]-Diphtheria toxin from Corynebacterium diphtheriae, CRM 197

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化学文摘社编号:
92092-36-9
UNSPSC Code:
12352202

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form

lyophilized powder

storage temp.

2-8°C

Quality Level

200

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Packaging

Package size based on protein content

Physical form

Lyophilized powder containing sodium phosphate, sucrose and polysorbate 80

存储类别

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

法规信息

新产品
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SLBW3541
SLBV9634
SLBV5814
SLBT2959
SLBT0771

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I reconstitute Product D2189, [Glu52]-Diphtheria toxin from Corynebacterium diphtheriae?

    The vial can be reconstituted with 1.0 mL of sterile water. Each vial contains 1 mg of Diphtheria toxin CRM mutant, sodium phosphate buffer, and lactose. It can sometimes be hard to get the product into solution due to the lactose used as a stabilizer. The supplier suggests slight warming (to at least room temperature or 30 °C, but not more than 37 °C) followed by a brief vortex to break up the filaments.   

  4. What kind of mutant, is Product D2189, [Glu52]-Diphtheria toxin from Corynebacterium diphtheriae, and how is this product different from Product No. D0564?

    Product No. D0564 is the wild-type toxin and possesses enzymatic activity.  The Glu52 diptheria toxin, also known as CRM197, has a mutation in fragment A (a glycine to glutamic acid substitution at position 52) that results in the complete loss of enzymatic activity. More information on the mutant can be found in the following reference: Uchida, T., Pappenheimer, Jr., A.M. and Harper, A.A.,  J. Biol. Chem., 248, 3851-3854 (1973).

  5. What is the molecular weight of Product D2189, [Glu52]-Diphtheria toxin from Corynebacterium diphtheriae?

    On reducing SDS gels, this protein migrates as a single band of an approximate molecular weight of 63,000 Daltons.      

  6. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  7. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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Nosocomial infections with the Gram-positive pathogen Clostridium difficile pose a major risk for hospitalized patients and result in significant costs to health care systems. Here, we present the chemical synthesis of a PS-II hapten of a cell wall polysaccharide of
Yung-Chih Kuo et al.
Colloids and surfaces. B, Biointerfaces, 91, 242-249 (2011-12-06)
This study investigates the capability of CRM197-grafted polybutylcyanoacrylate (PBCA) nanoparticles (NPs) (CRM197/PBCA NPs) to carry zidovudine (AZT) across the blood-brain barrier (BBB). AZT was loaded on CRM197/PBCA NPs to traverse the monolayer of human brain-microvascular endothelial cells (HBMECs) regulated by
Pierre van Damme et al.
PloS one, 6(9), e25398-e25398 (2011-10-08)
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Francesca Micoli et al.
PloS one, 7(11), e47039-e47039 (2012-11-13)
Enteric fevers remain a common and serious disease, affecting mainly children and adolescents in developing countries. Salmonella enterica serovar Typhi was believed to cause most enteric fever episodes, but several recent reports have shown an increasing incidence of S. Paratyphi
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