B7-1/CD80 Protein, Human (HEK293, Fc)
Based on 1 Customer Validation
B7-1/CD80 Protein, Human (HEK293, Fc) is a polypeptide chain with the C-termimal human IgG1 Fc fragment produced in HEK293 cells. CD80 is a costimulatory molecule known for its role in T-cell activation and also in regulating normal and malignant B cellsactivity.
- Species: Human
- Source: HEK293
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Storage:Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
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Biological Activity
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Technical Parameters
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Product Properties
- Documentation
- References
- Help & FAQs
Biological Activity
Description
B7-1/CD80 Protein, Human (HEK293, Fc) is a polypeptide chain with the C-termimal human IgG1 Fc fragment produced in HEK293 cells. CD80 is a costimulatory molecule known for its role in T-cell activation and also in regulating normal and malignant B cellsactivity.
Background
CD80 (B7-1) and CD86 (B7-2) are expressed as cell surface molecules by APCs and are responsible for delivering additional or second signals to T cells when they interact with their ligands CD28 and CD152 (CTLA-4). Expression of B7.1 (CD80) and B7.2 (CD86), two related moleculesbelonging to the Ig superfamily, appears crucial to the ability of the APCs to activate T cells[1].
Verified Bioactivity
1.2 µg/mL (100 µL/well) of immoblized recombinant human CTLA-4-hFc or CD28, hFc, Human can bind biotinylated human B7-1/CD80-Fc with a linear range of 1.22-9.77 ng/mL.
2.Measured by its ability to induce IL-2 secretion by Jurkat human acute T cell leukemia cells. The ED50 for this effect is 0.09708 μg/mL in the presence of PHA, corresponding to a specific activity is 10300.783 U/mg.
MCE Validation Data
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Purity - SDS-PAGE
Purity - SDS-PAGE
Technical Parameters
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Species Human
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Source HEK293
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Tag C-hFc
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Accession
P33681-1 (V35-N242)
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Molecular Construction
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N-term
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B7-1 (V35-N242)
Accession # P33681 -
hFc
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C-term
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Protein Length
Extracellular Domain
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Synonyms
CD80; B-Lymphocyte Activation Antigen B7; Prev. CD28LG1; LAB7; Prev. CD28LG; BB1; T-Lymphocyte Activation Antigen CD80; B7; Activation B7-1 Antigen; Costimulatory Molecule Variant IgV-CD80; B7.1; Costimulatory Factor CD80; B7-1; CD80 Molecule; CD80 Antige
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AA Sequence
VIHVTKEVKEVATLSCGHNVSVEELAQTRIYWQKEKKMVLTMMSGDMNIWPEYKNRTIFDITNNLSIVILALRPSDEGTYECVVLKYEKDAFKREHLAEVTLSVKADFPTPSISDFEIPTSNIRRIICSTSGGFPEPHLSWLENGEELNAINTTVSQDPETELYAVSSKLDFNMTTNHSFMCLIKYGHLRVNQTFNWNTTKQEHFPDN
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Molecular Weight
Approximately 73-85 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.
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Glycosylation
Yes
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Purity
≥ 95%, as determined by reducing SDS-PAGE.
Product Properties
Lyophilized powder.
Lyophilized after extensive dialysis against PBS.
<0.2 EU/μg, determined by LAL method.
It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).
Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
Room temperature in continental US; may vary elsewhere.
Documentation
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Data Sheet (263 KB)
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SDS (254 KB)
- English - EN (254 KB)
- Français - FR (254 KB)
- Deutsch - DE (254 KB)
- Norwegian - NO (254 KB)
- Español - ES (254 KB)
- Swedish - SV (254 KB)
- Italian - IT (254 KB)
- Korean - KR (254 KB)
- Portuguese - PT (254 KB)
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Handling Instructions (2659 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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