Mouse CD28 Recombinant Protein Fc Tag Lyophilized

Mouse CD28 Recombinant Protein Fc Tag Lyophilized from Innovative Research has been recombinantly produced in CHO cells. This is a Lyophilized protein buffered in Lyophilized from 0.2um-filtered solution in PBS. Reconstitute at 100 and#956;g/ml in sterile PBS. with a purity of ?98% (SDS-PAGE).

Endotoxin level is less than 0.06EU/ and#956;g protein (LAL test; Lonza)..

More Details:

• Species: Mouse
• Target: Cd28
• Purity: ?98% (SDS-PAGE).
  
  Endotoxin level is less than 0.06EU/ and#956;g protein (LAL test; Lonza).
• Source: CHO cells
• Storage Conditions: Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for up to 3 months when stored at -20°C.

Additional Information:

CD28 and CTLA-4 together with their ligands, CD80 (B7-1) and CD86 (B7-2), constitute one of the dominant costimulatory pathways that regulate T and B cell responses. CD28 and CTLA-4 are structurally homologous molecules that are members of the immunoglobulin (Ig) gene superfamily. Both CD28 and CTLA-4 are composed of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. CD28 and CTLA-4 are both expressed on the cell surface as disulfide-linked homodimers or as monomers. The genes encoding these two molecules are closely linked on human chromosome 2 and mouse chromosome 1. Mouse CD28 is expressed constitutively on virtually 100% of mouse T cells and on developing thymocytes. Cell surface expression of mouse CD28 is downregulated upon ligation of CD28 in the presence of PMA or PHA. In contrast, CTLA-4 is not expressed constitutively but is upregulated rapidly following T cell activation and CD28 ligation. Cell surface expression of mouse CTLA-4 peaks approx.y 48 hours after activation. Although both CTLA-4 and CD28 can bind to the same ligands, CTLA-4 binds to B7-1 and B7-2 with a 20-100 fold higher affinity than CD28. CD28/B7 interaction has been shown to prevent apoptosis of activated T cells via the upregulation of bcl-XL. CD28 ligation has also been shown to regulate Th1/Th2 differentiation.

This recombinant proteins is for research use only.. At Innovative Research we provide reliable, consistent products that deliver reliable, consistent results.

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This material is sold for in-vitro use only for research. This material is not suitable for human or animal use. While we make every effort to ensure the safety of our products, we recommend handling any biological materials with standard precautions as if capable of spreading infectious disease. The statements herein are offered for informational purposes only to be used solely for your consideration, investigation, and verification.

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