Human CellExp™ CTLA4/CD152, human recombinant

Catalog number
7476-100
Name
Human CellExp™ CTLA4/CD152, human recombinant
Size
100 μg
Price
626.00 EUR
Supplier

Details

Target
CTLA4/CD152
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. T cell activation through the T cell receptor and CD28 leads to increased expression of CTLA-4, an inhibitory receptor for B7 molecules. Fusion proteins of CTLA4 and antibodies (CTLA4-Ig) have been used in clinical trials for rheumatoid arthritis.
Concentration
N/A
Molecular weight
This protein is fused with 6×his tag at the C-terminus, and has a calculated MW of 14.3 kDa. The predicted N-terminus is Ala 37. DTT-reduced Protein migrates as 25 kDa in SDS-PAGE due to glycosylation.
Synonym
CTLA4, CD152, CELIAC3, GRD4, GSE, ICOS, IDDM12
Other name
CTLA4, CD152, CELIAC3, GRD4, GSE, ICOS, IDDM12
NCBI gene number
1493
NCBI gene
CTLA4
Gene source
Human
NCBI number
P16410
Recombinant
Yes
Source
HEK293 cells
Purification
≥95%
Tested applications
SDS-PAGE, N/A
Tested activity
N/A
Biological activity
Measured by its binding ability in a functional ELISA. Immobilized Human CTLA4 Protein (Catalog # CT4-H5229) at 2 μg/ml (100 μl/well) can bind rhB7-1/ CD80 Protein Fc Chimera (Catalog # B71-H5259) with a linear range of 0.2 - 20 ng/ml, when detected by HRP labeled Goat anti Human IgG Fc PAb. Measured by its binding ability in a functional ELISA. Immobilized Human CTLA4 Protein (Catalog # CT4-H5229) at 1 μg/ml (100 μl/well) can bind rh PD-L1 /B7-H1 /CD274 Protein Fc Chimera (Catalog # PD1-H5258) with a linear range of 20 - 200 ng/ml, when detected by HRP labeled Goat anti Human IgG Fc PAb.
Reesults
Measured by its binding ability in a functional ELISA. Immobilized Human CTLA4 Protein (Catalog # CT4-H5229) at 2 μg/ml (100 μl/well) can bind rhB7-1/ CD80 Protein Fc Chimera (Catalog # B71-H5259) with a linear range of 0.2 - 20 ng/ml, when detected by HRP labeled Goat anti Human IgG Fc PAb. Measured by its binding ability in a functional ELISA. Immobilized Human CTLA4 Protein (Catalog # CT4-H5229) at 1 μg/ml (100 μl/well) can bind rh PD-L1 /B7-H1 /CD274 Protein Fc Chimera (Catalog # PD1-H5258) with a linear range of 20 - 200 ng/ml, when detected by HRP labeled Goat anti Human IgG Fc PAb.
Binding ability
N/A
Unit
N/A
Storage condition
-20°C
Shipping under
Gel Pack
Physical appearance
Lyophilized
Physical properties
Lyophilized from 0.22 μm filtered solution in PBS, pH 7.4. Normally Mannitol or Trehalose is added as protectants before lyophilization.
How to reconstitute
Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.
Aa sequence
N/A
Before use
Centrifuge the vial prior to opening.
Notes
For Research Use Only! Not to be used in humans
Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
Additional source
Recombinants or rec. proteins
Group
recombinants