Recombinant Mouse IL-7 R alpha/CD127 Fc Chimera Protein, CF

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Binding Activity
Format
Carrier-Free

Order Details

Recombinant Mouse IL-7 R alpha/CD127 Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its binding ability in a functional ELISA. Immobilized rmIL-7 R alpha /Fc Chimera at 4 µg/mL (100 µL/well) can bind rmIL-7 with a linear range of 0.2‑10 ng/mL.
Source
Mouse myeloma cell line, NS0-derived mouse IL-7 R alpha/CD127 protein
Mouse IL-7 R alpha
(Glu21 - Asp239)
Accession # Q9R0C1
IEGRMD Human IgG1
(Pro100 - Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Glu21
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
Il7r
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
51.6 kDa (monomer).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
55-65 kDa, reducing conditions

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse IL-7 R alpha/CD127 Fc Chimera Protein, CF

  • CD127 antigen
  • CD127
  • CD127ILRA
  • CDW127
  • IL-7 R alpha
  • IL-7 receptor subunit alpha
  • IL7R alpha
  • IL-7R subunit alpha
  • IL7R
  • IL7RA
  • IL-7Ra
  • IL-7R-alpha
  • interleukin 7 receptor alpha chain
  • interleukin 7 receptor isoform H5-6
  • interleukin 7 receptor
  • interleukin-7 receptor subunit alpha

Background

Interleukin 7 Receptor alpha (IL-7 R alpha ), also known as CD127, is a 75 kDa hematopoietin receptor superfamily member that plays an important role in lymphocyte differentiation, proliferation, and survival (1, 2). Mature mouse IL-7 R alpha consists of a 219 amino acid (aa) extracellular domain (ECD) with one fibronectin type III domain and a WSxWS motif, a 25 aa transmembrane segment, and a 195 aa cytoplasmic domain (3). Within the ECD, mouse IL-7 R alpha shares 67% and 79% aa sequence identity with human and rat IL‑7 R alpha, respectively. IL-7 R alpha associates with the common gamma chain ( gamma c) to form the functional high affinity IL-7 receptor complex (4). The gamma c is also a subunit of the receptors for IL-2, -4, -9, -15, and -21. Human and mouse IL-7 show cross-species activity through the IL-7 receptor (3, 5). IL‑7 R alpha is expressed on double negative (CD4-CD8-) and CD4+ or CD8+ single positive T cells as well as on CD8+ memory T cells and their precursors (6, 7). It is expressed early in B cell development, prior to the appearance of surface IgM (6). In mouse, IL-7 activation of IL‑7 R alpha is critical for both T cell and B cell lineage development (8). In human it is required for T cell but not for B cell development (9). IL‑7 induces the down regulation and shedding of cell surface IL-7 R alpha (10). IL-7 R alpha additionally associates with TSLP R to form the functional receptor for thymic stromal lymphopoietin (11, 12). TSLP indirectly regulates T cell development by modulating dendritic cell activation (2, 13). Knockout of TSLP R in mice provokes minor changes in B and T cell development compared to those seen with IL‑7 R alpha deletion (8, 14). The complexity of IL-7 R alpha biology is suggested by the competition between IL-7 and TSLP for receptor binding and by the ability of IL‑7 R alpha to form functional complexes with SCF R and HGF R (11, 12, 15, 16).

 

  1. Mazzucchelli, R. and S.K. Durum, 2007, Nat. Rev. Immunol. 7:144.
  2. Liu, Y.-J. et al. (2007) Annu. Rev. Immunol. 25:193.
  3. Goodwin, R.G. et al. (1990) Cell 60:941.
  4. Noguchi, M. et al. (1993) Science 262:1877.
  5. Barata, J.T. et al. (2006), Exp. Hematol. 34:1133.
  6. Sudo, T. et al. (1993) Proc. Natl. Acad. Sci. 90:9125.
  7. Kaech, S.M. et al. (2003) Nat. Immunol. 4:1191.
  8. Peschon, J.J. et al. (1994) J. Exp. Med. 180:1955.
  9. Prieyl, J.A. and T.W. LeBien (1996) Proc. Natl. Acad. Sci. 93:10348.
  10. Vranjkovic, A. et al. (2007) Int. Immunol. 19:1329.
  11. Park, L.S. et al. (2000) J. Exp. Med. 192:659.
  12. Pandey, A. et al. (2000) Nat. Immunol. 1:59.
  13. Reche, P.A. et al. (2001) J. Immunol. 167:336.
  14. Al-Shami, A. et al. (2004) J. Exp. Med. 200:159.
  15. Jahn, T. et al. (2007) Blood 110:1840.
  16. Lai, L. et al. (2006) Blood 107:1776.

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Bioinformatics

Gene Symbol Il7r
Entrez
Uniprot