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Recombinant Mouse CD7 Protein, CF

Catalog #: 8145-CD Datasheet
Catalog # Availability Size / Price Qty
8145-CD-050
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Recombinant Mouse CD7 Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. When Recombinant Mouse SECTM1 Fc Chimera is immobilized at 1 µg/mL (100 µL/well), the concentration of Recombinant Mouse CD7 that produces 50% optimal binding response is approximately 15‑75 ng/mL.
Source
Mouse myeloma cell line, NS0-derived mouse CD7 protein
Gln24-Pro150, with a C-terminal 6-His tag
Accession #
P50283
N-terminal Sequence
Analysis
No results obtained: Gln24 predicted
Predicted Molecular Mass
15 kDa
SDS-PAGE
20-35 kDa, reducing conditions

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8145-CD

Product Datasheet

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.

8145-CD

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in 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.

Background: CD7

CD7, also known as Leu-9, is an approximately 40 kDa glycosylated and palmitoylated transmembrane protein in the immunoglobulin superfamily (1). Mature mouse CD7 consists of a 127 amino acid (aa) extracellular domain (ECD), a 21 aa transmembrane segment, and a 39 aa cytoplasmic domain (2). Within the ECD, mouse CD7 shares 43% and 81% aa sequence identity with human and rat CD7, respectively. CD7 is expressed on T cells (2, 3), NK cells (4), myeloid progenitor cells (5), and CD19+ B progenitor cells (6). Among CD8+ T cells, the CD7-bright population preferentially contains naïve and memory cells, while more weak expressors are primarily effector cells (7). CD7 associates in cis with CD3 and CD45 and in trans with SECTM1 (8, 9). Ligation of CD7 with antibodies or SECTM1 co-stimulates the activation and proliferation of CD4+ and CD8+ T cells (10, 11) and NK cells (4, 9). It also enhances integrin-mediated adhesion of these cells to Fibronectin, ICAM-1, and VCAM-1 (3, 12). CD7 additionally mediates the Galectin-1 induced apoptosis of T cells (13) and facilitates the fusion of HIV-1 with target cells (14).

References
  1. Sutherland, D.R. et al. (1984) J. Immunol. 133:327.
  2. Yoshikawa, K. et al. (1993) Immunogenetics 37:114.
  3. Shimizu, Y. et al. (1992) J. Exp. Med. 175:577.
  4. Rabinowich, H. et al. (1994) J. Immunol. 152:517.
  5. Chabannon, C. et al. (1992) J. Immunol. 149:2110.
  6. Grumayer, E.R. et al. (1991) Blood 77:64.
  7. Aandahl, E.M. et al. (2003) J. Immunol. 170:2349.
  8. Lazarovits, A.I. et al. (1994) J. Immunol. 153:3956.
  9. Lyman, S.D. et al. (2000) J. Biol. Chem. 275:3431.
  10. Wang, T. et al. (2012) J. Leukoc. Biol. 91:449.
  11. Carrera, A.C. et al. (1988) J. Immunol. 141:1919.
  12. Rabinowich, H. et al. (1994) J. Immunol. 153:3504.
  13. Pace, K.E. et al. (2000) J. Immunol. 165:2331.
  14. Sato, A.I. et al. (1994) J. Immunol. 152:5142.
Entrez Gene IDs
924 (Human); 12516 (Mouse); 303747 (Rat); 102124399 (Cynomolgus Monkey)
Alternate Names
CD7 antigen (p41); CD7 antigen; CD7 molecule; CD7; GP40T-cell surface antigen Leu-9; LEU-9; T-cell antigen CD7; T-cell leukemia antigen; Tp40; TP41; TP41p41 protein

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