Recombinant Mouse C-Reactive Protein/CRP Protein, CF

Catalog # Availability Size / Price Qty
1829-CR-200
Product Details
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Recombinant Mouse C-Reactive Protein/CRP Protein, CF Summary

Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Bioassay data are not available.
Source
Mouse myeloma cell line, NS0-derived mouse C-Reactive Protein/CRP protein
His20-Ser225, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Analysis
His20
Structure / Form
Oligomer
Predicted Molecular Mass
23.9 kDa (monomer)
SDS-PAGE
27 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

1829-CR

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 50 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: C-Reactive Protein/CRP

C-reactive protein (CRP) is a member of the pentraxin family of plasma proteins that are part of the lectin fold superfamily of calcium-dependent, carbohydrate-binding proteins (1). CRP is named for its ability to bind to the C-polysaccharide of Strep. Pneumoniae. CRP is characterized by cyclic pentameric structure that contains five identical protomers/subunits, each exhibiting a lectin fold composed of two antiparallel beta -sheets with a fattened jellyroll topology. The mouse CRP precursor is 225 amino acids (aa) in length and contains a signal peptide of 19 aa with a mature polypeptide of 206 aa (2, 3). There is one intrachain disulfide bond and no N-linked glycosylation site(s). Although rat CRP is glycosylated at an N-linked site, human, mouse and rabbit CRP all appear to be non-glycosylated (1, 4, 5). In mouse, the protomers are assembled non-covalently to form the pentameter; in rat, two of the five protomers are covalently linked (6). Mature mouse CRP shares 74%, 71%, 79%, and 68% aa sequence identity with rat, human, hamster and guinea pig CRP, respectively. In human, CRP is induced in hepatocytes principally by IL-6 (1). In mouse, IL-6 has very little effect. Mouse CRP induction is due principally to IL-1 (1, 7), with another pentraxin, SAP, being IL-6 inducible (7). CRP exhibits calcium-dependent binding to ligands. Phosphocholine (PCh), a constituent of many bacterial and fungal cell walls, is a principal ligand of CRP. CRP will also bind to the cell membrane of injured necrotic and apoptotic cells. In this context, CRP acts as an opsonin, binding to Fc gamma RI and II, and serves as an antiinflammatory agent (8).

References
  1. Hirschfield, G.M. and M.B. Pepys (2003) Q.J. Med 96:793.
  2. Whitehead, A.S. et al. (1990) Biochem. J. 266:283.
  3. Ohnishi, S. et al. (1988) Biochem. Biophys. Res. Commun. 156:814.
  4. Sambasivam, H. et al. (1993) J. Biol. Chem. 268:10007.
  5. Black, S. et al. (2004) J. Biol. Chem. 279:48487.
  6. Rassouli, M. et al. (1992) J. Biol. Chem. 267:2947.
  7. Ku, N.-O. and R.F. Mortensen (1993) Cytokine 5:319.
  8. Mold, C. et al. (2002) J. Immunol. 169:7019.
Entrez Gene IDs
1401 (Human); 12944 (Mouse); 25419 (Rat)
Alternate Names
C-Reactive Protein; C-reactive protein, pentraxin-related; CRP; MGC88244; pentraxin 1; PTX1MGC149895

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