Human CTLA-4 / CD152 Protein, Twin-Strep Tag
| Specifications | |
|---|---|
| Category: | Immune Checkpoint Proteins |
| Molecular Weight: | 16.5 kDa |
| Tag: | C-Twin-Strep |
| Label / Conjugate: | N/A |
| Source: | Human CTLA-4 Protein, Twin-Strep Tag (CT4-H5284) is expressed from human 293 cells (HEK293). It contains AA Ala 37 - Phe 162 (Accession # P16410-1). |
| Purity: | 85% |
| Endotoxin Level: | 1.0 EU per μg |
| Format: | Powder |
| Additional Information | |
|---|---|
| Organism: | Human |
| Accn. No.: | P16410-1 |
Sequence Information
Ala 37 - Phe 162
Background
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.
Price
3.086,00 €
