CD152 [CTLA-4] Recombinant Protein

• Background:

  CD152 [CTLA-4] and CD28, together with their ligands B7-1 and B7-2, constitute one of the dominant costimulatory pathways that regulate T and B cell responses. CD152 and CD28 are structurally homologous molecules that are members of the immunoglobulin (Ig) gene superfamily. Both CD152 and CD28 are composed of a single Ig V-like extracellular domain, a transmembrane domain and an intracellular domain. CD152 and CD28 are both expressed on the cell surface as disulfide-linked homodimers or as monomers. CD152 was originally identified as a gene that was specifically expressed by cytotoxic T lymphocytes. However, CD152 transcripts have since been found in both Th1 and Th2, and CD4 + and CD8 + T cell clones. Whereas, CD28 expression is constitutive on the surfaces of 95% of CD4 + T cells and 50% of CD8 + T cells and is down regulated upon T cell activation, CD152 expression is upregulated rapidly following T cell activation and peaks approximately 24 hours following activation. Although both CD152 and CD28 can bind to the same ligands, CD152 binds to B71 and B72 with 20-100-fold higher affinity than CD28.

• NCBI Gene ID:

  1493

• Swiss Prot:

  P01584

• Accession Number:

  NP_005205

• Tag:

  Fc Tag

• Type:

  Recombinant Proteins

• Source:

  CHO cells

• Field of Research:

  Immunology

• Buffer:

  Lyophilized from 0.2um-filtered solution in PBS. Reconstitute with 100 μ l sterile water. Add 1X PBS to the desired protein concentration.

• Shipping Conditions:

  Room Temp

• 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.

• Applications Notes:

  This recombinant proteins is for research use only.

• NCBI Official Name:

  Cytotoxic T-lymphocyte associated protein 4

• NCBI Organism:

  Homo sapiens

• Other Product Names:

  CTLA-4

• Species:

  Human

• Protein ID:

  21361212

• Physical Properties:

  Lyophilized

• CAS Number:

  9000-83-3