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Product Details
RP-88024
Product Specifications
Species
Human
Expression System
HEK293 cells
Amino acid sequence
Human B7-1, amino acids Met1-Asn242 (Accession # NP_005182.1) with a C-terminal His-tag
Tag
His-tag
Molecular weight
25.31 kDa
Class
Recombinant
Type
Protein
Purity
>95% as determined by SDS-PAGE.
Endotoxin concentration
<1.0 EU/µg
Activity
Measured by its binding ability in a functional ELISA. Immobilized B7-1 Protein, Human, Recombinant (His Tag) at 2 µg/ml (100 µL/well) can bind CTLA-4 Protein, Human, Recombinant (His and hFc Tag) . The EC50 of of CTLA-4 (His and hFc Tag) is 35-80 ng/mL.
Conjugate
Form
Lyophilized
Purification
purified
Storage buffer
PBS, pH 7.4, with 5% mannitol, 5% trehalose, 0.01% Tween 80
Contains
no preservative
Storage conditions
-20° C, Avoid Freeze/Thaw Cycles
Shipping conditions
Wet ice
Product Specific Information
It is recommended that the protein be aliquoted for optimal storage.
It is recommended that sterile water (1886 µL) be added to the vial to prepare a stock solution of 0.53 mg/mL.
Concentration is measured by UV.
Target Information
CD80 (B7-1) and CD86 (B7-2) are ligands of T cell critical costimulatory molecule CD28, and of an inhibitory receptor CTLA-4 (CD152). Both B7 molecules are expressed on professional antigen-presenting cells and are essential for T cell activation, and both molecules can also substitute for each other in this process. CD80 is rapidly induced on the surface of in vitro activated B cells, with Epstein Barr Virus (EBV) transformed B cell lines, with Burkitts lymphoma cell lines, with freshly isolated follicular B lymphoma cells, T cells, and monocytes. The B-lymphocyte activation antigen B7-1 provides regulatory signals for T lymphocytes as a consequence of binding to the CD28 and CTLA4 ligands of T cells. Diseases associated with CD80 dysfunction include gallbladder squamous cell carcinoma and myocarditis.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: Activation B7-1 antigen; B-lymphocyte activation antigen B7; B7; BB1; CD80; CD80 antigen (CD28 antigen ligand 1, B7-1 antigen); costimulatory factor CD80; costimulatory molecule variant IgV-CD80; CTLA-4 counter-receptor B7.1; sCD 80; sCD80; soluble CD 80; soluble CD80; T-lymphocyte activation antigen CD80; TS/A-1
Gene Aliases: B7; B7-1; B7.1; BB1; CD28LG; CD28LG1; CD80; LAB7
UniProt ID: (Human) P33681
Entrez Gene ID: (Human) 941
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