Recombinant Human CD200R1 Fc Chimera Protein, CF Summary
Product Specifications
| Human CD200 R1 (Ala27-Leu266) Accession # AAQ19772 |
IEGRMD | Human IgG1 (Pro100-Lys330) |
| N-terminus | C-terminus | |
Analysis
Product Datasheets
Carrier Free
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.
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.
3414-CD
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 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.
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Reconstitution Calculator
Background: CD200R1
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).
- Rosenblum, M.D. et al. (2006) J. Dermatol. Sci. 41:165.
- Gorczynski, R.M. (2005) Curr. Opin. Invest. Drugs 6:483.
- Barclay, A.N. et al. (2002) Trends Immunol. 23:285.
- Wright, G.J. et al. (2003) J. Immunol. 171:3034.
- Hatherley, D. et al. (2005) J. Immunol. 175:2469.
- Voehringer, D. et al. (2004) J. Biol. Chem. 279:54117.
- Shiratori, I. et al. (2005) J. Immunol. 175:4441.
- Cherwinski, H.M. et al. (2005) J. Immunol. 174:1348.
- Fallarino, F. et al. (2004) J. Immunol. 173:3748.
- Wright, G.J. et al. (2001) Immunology 102:173.
- Hoek, R.M. et al. (2000) Science 290:1768.
- Hatherley, D. and A.N. Barclay (2004) Eur. J. Immunol. 34:1688.
- Gorczynski, R. et al. (2004) J. Immunol. 172:7744.
- Jenmalm, M.C. et al. (2006) J. Immunol. 176:191.
- Zhang, S. et al. (2004) J. Immunol. 173:6786.
Citation for Recombinant Human CD200R1 Fc Chimera Protein, CF
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
1 Citation: Showing 1 - 1
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Mechanistic dissection of the PD-L1:B7-1 co-inhibitory immune complex
Authors: SC Garrett-Th, A Massimi, EV Fedorov, JB Bonanno, L Scandiuzzi, B Hillerich, RD Seidel, JD Love, SJ Garforth, C Guha, SC Almo
PLoS ONE, 2020-06-04;15(6):e0233578.
Species: Human
Sample Types: Whole Cells
Applications: Bioassay
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Reason for Rating: Binding to CD200R observed by SPR.
