B7-1 Protein, Mouse, Recombinant (Fc Tag)

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B7-1 Protein, Mouse, Recombinant (Fc Tag): Product Information

Purity
> 90 % as determined by SDS-PAGE
Endotoxin
< 1.0 EU per μg of the protein as determined by the LAL method
Activity
1. Measured by its binding ability in a functional ELISA.
2. Immobilized human CTLA4 (cat: 11159-H08H) at 10 μg/mL (100 μl/well) can bind mouse CD80-Fc (cat: 50446-M02H), The EC50 of mouse CD80-Fc (cat: 50446-M02H) is 28 ng/mL.
Protein Construction
A DNA sequence encoding the mouse CD80 (Q00609-1) extracellular domain (Met 1-Lys 245) was fused with the Fc region of human IgG1 at the C-terminus.
Accession#
Expressed Host
HEK293 Cells
Species
Mouse
Predicted N Terminal
Val 38
Molecule Mass
The recombinant mouse CD80 consists of 449 amino acids and has a predicted molecular mass of 50.7 kDa.
Formulation
Lyophilized from sterile PBS, pH 7.4
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -70℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

B7-1 Protein, Mouse, Recombinant (Fc Tag): Images

B7-1 Protein, Mouse, Recombinant (Fc Tag): Alternative Names

B71 Protein, Mouse; Cd28l Protein, Mouse; Ly-53 Protein, Mouse; Ly53 Protein, Mouse; MIC17 Protein, Mouse; TSA1 Protein, Mouse

B7-1 Background Information

The B-lymphocyte activation antigen B7-1 (referred to as B7), also known as CD8, is a member of cell surface immunoglobulin superfamily and is expressed on the surface of antigen-presenting cells including activated B cells, macrophages and dendritic cells. As costimulatory ligands, B7-1 which exists predominantly as dimer and the related protein B7-2, interact with the costimulatory receptors CD28 and cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) expressed on T cells, and thus constitute one of the dominant pathways that regulate T cell activation and tolerance, cytokine production, and the generation of CTL. The B7/CD28/CTLA4 pathway has the ability to both positively and negatively regulate immune responses. CD8 is thus regarded as promising therapeutic targets for autoimmune diseases and various carcinomas.
Full Name
CD80 molecule
References
  • Greenfield EA, et al. (1998) CD28/B7 costimulation: a review. Crit Rev Immunol. 18(5): 389-418.
  • Zang X, et al. (2007) The B7 family and cancer therapy: costimulation and coinhibition. Clin Cancer Res. 13(18 Pt 1): 5271-9.
  • Mir MA, et al. (2008) Signaling through CD80: an approach for treating lymphomas. Expert Opin Ther Targets. 12(8): 969-79.
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