Rat CTLA-4 / CD152 Protein, Fc Tag

ACRObiosystems

Rat CTLA-4 / CD152 Protein, Fc Tag

4

Immune Checkpoint Proteins

Research Use Only

95%

Powder

Characteristics: This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 40.2 kDa. The protein migrates as 50-55 kDa under reducing (R) condition (SDS-PAGE). Description: CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4) is also known as CD152 (Cluster of differentiation 152), is a protein receptor that downregulates the immune system. CTLA4 is a member of the immunoglobulin superfamily, which is expressed on the surface of Helper T cells and transmits an inhibitory signal to T cells. The protein contains an extracellular V domain, a transmembrane domain, and a cytoplasmic tail. Alternate splice variants, encoding different isoforms. CTLA4 is similar to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and B7-2 respectively, on antigen-presenting cells. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Intracellular CTLA4 is also found in regulatory T cells and may be important to their function. Fusion proteins of CTLA4 and antibodies (CTLA4-Ig) have been used in clinical trials for rheumatoid arthritis.

● -20°C to -70°C for 12 months in lyophilized state; ● -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Rat CTLA-4, Fc Tag (CT4-R5259) is expressed from human 293 cells (HEK293). It contains AA Ile 38 - Asp 161 (Accession # Q62859).

-20℃

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