Recombinant Mouse CMG-2 Protein

Catalog # 3636-CM | R&D Systems, Inc. a Bio-Techne Brand
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Carrier Free
3636-CM-050/CF
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3636-CM-050
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Key Product Details

Accession #

Q6DFX2

Source

NS0

Conjugate

Unconjugated

Applications

Binding Activity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse CMG-2/ANTXR2 protein
Gly26-Gly318, with a C-terminal 6-His tag

Purity

>95%, 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.

N-terminal Sequence Analysis

Gly26

Predicted Molecular Mass

32 kDa

SDS-PAGE

32-35 kDa, reducing conditions

Activity

Measured by its ability to bind anthrax protective antigen (PA) in a functional ELISA. Scobie, H.M. et al. (2003) Proc. Natl. Acad. Sci. USA 100:5170.
Immobilized PA at 1.5 µg/mL (100 µL/well) can bind rmCMG-2 with a linear range of 0.08‑5.0 µg/mL.

Formulation, Preparation and Storage

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.

Carrier: 3636-CM
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 200 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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.
Carrier Free: 3636-CM/CF
Formulation Supplied as a 0.2 μm filtered solution in PBS.
Shipping The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after opening.

Background: CMG-2/ANTXR2

Capillary Morphogenesis Gene-2 (CMG-2) is a widely expressed anthrax toxin receptor (ATR) family protein (1 - 4). CMG-2 is a ~55 kDa protein that contains a 31 amino acid (aa) signal sequence, a 287 aa extracellular domain (ECD), a 21 aa transmembrane sequence, and a 148 aa cytoplasmic domain. Unlike human CMG-2 which has four isoforms, only one sequence has been reported for mouse CMG-2. The main functional domain of CMG-2 is an extracellular integrin-like von Willebrand factor type A (VWA) domain with a metal ion dependent adhesion site (MIDAS), through which it adheres selectively to collagen type IV and laminin (1 - 6). CMG-2 isoform 2 is induced in HUVEC as they undergo capillary formation in collagen matrices in vitro (4). In humans, CMG-2 is mutated in juvenile hyaline fibromatosis and infantile systemic hyalinosis disorders, and several of these mutations result in loss of laminin binding (7). CMG-2 and the related protein ATR/TEM8 serve as receptors for the protective antigen (PA) of Bacillus anthracis (1, 2). After binding the VWA domain, PA undergoes furin-type cleavage, forms a heptameric receptor/PA pre-pore and binds LF or EF toxin subunits (6, 8, 9). Transport to low pH endosomes, which requires CMG-2 ubiquitination and interaction with the LDL receptor related protein LRP6 (10, 11), allows PA pore formation and release of toxin to the cytoplasm (11, 12). Soluble CMG-2 VWA domain acts as a dummy receptor that can protect cultured cells from anthrax intoxication (2). Within the extracellular region, mouse CMG-2 shares 84%, 91%, 80%, and 83% amino acid sequence homology with human, rat, bovine, and canine CMG-2, respectively. CMG-2 VWA domain also shares 60% aa identity with ATR/TEM8.

References

  1. Scobie, H.M. and J.A.T. Young (2005), Curr. Opin. Microbiol. 8:106.
  2. Scobie, H.M. et al. (2003) Proc. Natl. Acad. Sci. USA 100:5170.
  3. Swiss Prot. Accession #: Q6DFX2.
  4. Bell, S.E. et al. (2001) J. Cell Sci. 114:2755.
  5. Lacy, D.B. et al. (2004) Proc. Natl. Acad. Sci. USA 101:6367.
  6. Santelli, E. et al. (2004) Nature 430:905.
  7. Dowling, O. et al. (2003) Am. J. Hum. Genet. 73:957.
  8. Wigelsworth, D.J. et al. (2004) J. Biol. Chem. 279:23349.
  9. Go, M.Y. et al. (2006) J. Mol. Biol. 360:145.
  10. Abrami, L. et al. (2006) J. Cell Biol. 172:309.
  11. Wei, W. et al. (2006) Cell 124:1141.
  12. Lacy, D.B. et al. (2004) Proc. Natl. Acad. Sci. USA 101:13147.

Long Name

Capillary Morphogenesis Protein 2

Alternate Names

ANTXR2, cI-35, CMG2, ISH, JHS

Entrez Gene IDs

118429 (Human); 71914 (Mouse)

Gene Symbol

ANTXR2

UniProt

Q6DFX2

Product Documents for Recombinant Mouse CMG-2 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 3636-CM (with carrier)
Download SDS 3636-CM/CF (carrier free)

Product Specific Notices for Recombinant Mouse CMG-2 Protein

For research use only

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