• Species Reactivity

  Human

• Specificity

  Detects human CD200 R1 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant mouse CD200 R1 is observed.

• Source

  Monoclonal Mouse IgG    _2B Clone # 380525

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant human CD200 R1    
  Ala27-Leu266 (predicted)    
  Accession # NP_620161

• Formulation

  Supplied in a saline solution containing BSA and Sodium Azide.

• Label

  Allophycocyanin

Applications

• 
  

  Recommended    
  Concentration

  Sample

• Flow Cytometry

  10 µL/10    ⁶ cells

  See below

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Shipping

  The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

• Stability & Storage

  Protect from light.    Do not freeze.    

• 12 months from date of receipt, 2 to 8 °C as supplied.

Background: CD200 R1

CD200 R1, also known as OX-2 receptor, is a 90 kDa transmembrane protein in the immunoglobulin superfamily (1‑3). The standard human CD200 R1 cDNA encodes a 325 amino acid (aa) precursor that includes a 28 aa signal sequence, a 215 aa extracellular domain (ECD), a 21 aa transmembrane segment, and a 61 aa cytoplasmic domain. The ECD is composed of one Ig-like V-type domain and one Ig-like C2-type domain (4). Within the ECD, human CD200 R1 shares 56% aa sequence identity with mouse and rat CD200 R1. Alternate splicing of the human CD200 R1 mRNA generates four isoforms, two of which are truncated in the Ig-C2 domain and are likely secreted. The protein expressed here contains a mature region that is identical to that of the standard form. There is an N-terminal extension of 25 aa that, in the standard form, is part of the signal sequence. In human, a separate CD200 R12 gene encodes a protein that shares 81% ECD aa identity with CD200 R11. In mouse, at least four genes for CD200 R1-like molecules have been described (4‑6). CD200 R1 expression is restricted primarily to mast cells, basophils, macrophages, and dendritic cells (7‑9), while its ligand, CD200, is widely distributed (10). Disruption of this receptor-ligand system by knockout of the CD200 gene in mice leads to increased macrophage number and activation and predisposition to autoimmune disorders (11). Association of CD200 with CD200 R1 takes place between their respective N-terminal Ig-like domains (12). The capacity of CD200 R1-like molecules to interact with CD200 is controversial (5, 13). CD200 R1 propagates inhibitory signals despite its lacking a cytoplasmic ITIM (immunoreceptor tyrosine-based inhibitory motif) (8, 9, 14, 15) CD200 R1-like molecules, in contrast, are potentially activating receptors by means of their association with DAP12 (4, 6).

• References:

1. Rosenblum, M.D. et al. (2006) J. Dermatol. Sci. 41:165.

2. Gorczynski, R.M. (2005) Curr. Opin. Invest. Drugs 6:483.

3. Barclay, A.N. et al. (2002) Trends Immunol. 23:285.

4. Wright, G.J. et al. (2003) J. Immunol. 171:3034.

5. Hatherley, D. et al. (2005) J. Immunol. 175:2469.

6. Voehringer, D. et al. (2004) J. Biol. Chem. 279:54117.

7. Shiratori, I. et al. (2005) J. Immunol. 175:4441.

8. Cherwinski, H.M. et al. (2005) J. Immunol. 174:1348.

9. Fallarino, F. et al. (2004) J. Immunol. 173:3748.

10. Wright, G.J. et al. (2001) Immunology 102:173.

11. Hoek, R.M. et al. (2000) Science 290:1768.

12. Hatherley, D. and A.N. Barclay (2004) Eur. J. Immunol. 34:1688.

13. Gorczynski, R. et al. (2004) J. Immunol. 172:7744.

14. Jenmalm, M.C. et al. (2006) J. Immunol. 176:191.

15. Zhang, S. et al. (2004) J. Immunol. 173:6786.

• Long Name:

  CD200 Receptor 1

• Entrez Gene IDs:

  131450 (Human); 57781 (Mouse); 102139962 (Cynomolgus Monkey)

• Alternate Names:

  CD200 R1; CD200 receptor 1; CD200R1; CD200RMOX2Rcell surface glycoprotein CD200 receptor 1; Cell surface glycoprotein OX2 receptor 1; cell surface glycoprotein receptor CD200; CRTR2; HCRTR2; MOX2 receptor; MOX2R; OX2RCD200 cell surface glycoprotein receptor