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Product Details
Synonyms
4Ig-B7-H3, B7-H3, CD276, PSEC0249, UNQ309, PRO352, B7 homolog 3
Source
FITC-Labeled Human B7-H3 (4Ig), His Tag (B7B-HF2E7) is expressed from human 293 cells (HEK293). It contains AA Gly 27 - Thr 461 (Accession # Q5ZPR3-1). It is the FITC labeled form of Human B7-H3 (4Ig), His Tag (Cat. No. B7B-H52E7).
Predicted N-terminus: Gly 27
Request for sequenceMolecular Characterization
Other Tags and Version Biotin & Other Labeled Version
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 48.5 kDa. The protein migrates as 60-70 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Conjugate
FITC
Excitation source: 488 nm spectral line, argon-ion laser
Excitation Wavelength: 488 nm
Emission Wavelength: 535 nm
Labeling
The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with FITC using standard chemical labeling method. The residual FITC is removed by molecular sieve treatment during purification process.
Protein Ratio
The FITC to protein molar ratio is 1-2.
Purity
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please protect from light and avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
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Performance Data
SDS-PAGE
FITC-Labeled Human B7-H3 (4Ig), His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of FITC-Labeled Human B7-H3 (4Ig), His Tag (Cat. No. B7B-HF2E7) is more than 90% and the molecular weight of this protein is around 55-75 kDa verified by SEC-MALS.
Report
Bioactivity-ELISA
Immobilized Monoclonal Anti-Human B7-H3 / B7-H3 (4Ig) Antibody, Human IgG1 at 2 μg/mL (100 μL/well) can bind FITC-Labeled Human B7-H3 (4Ig), His Tag (Cat. No. B7B-HF2E7) with a linear range of 0.039-0.156 μg/mL (QC tested).
Protocol
Bioactivity-FACS
2e5 of anti-B7-H3 CAR-293 cells were stained with 100 μL of 3 μg/mL of FITC-Labeled Human B7-H3 (4Ig) , His Tag (Cat. No. B7B-HF2E7) and negative control protein respectively, FITC signals was used to evaluate the binding activity (QC tested).
Protocol
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FAQ
- Product
What is the difference between Human B7-H3 and Human B7-H3 (4Ig)?
The Human B7-H3 protein with an expression range of Leu29–Pro245 contains a single pair of immunoglobulin-like V and C domains. The product with an expression range of Gly27–Thr461, named B7-H3 (4Ig), includes the entire extracellular region.
Background
Recent Advances
Drug Development Progress- English Name：
CD276 antigen
- Category：
- Approved Drugs：
0 Details
- Drugs in Clinical Trials：
72 Details
- Highest Development Stage：
NDA/BLA
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