Product Details
Synonyms
4Ig-B7-H3, B7-H3, CD276, PSEC0249, UNQ309, PRO352, B7 homolog 3
Source
FITC-Labeled Human B7-H3 (4Ig), Fc Tag (B7B-HF2F4) 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), Fc Tag (Cat. No. B7B-H5258).
Predicted N-terminus: Gly 27
Request for sequenceMolecular Characterization

Other Tags and Version Biotin & Other Labeled Version
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 73.1 kDa. The protein migrates as 95-115 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 1-3.
Purity
>90% as determined by SDS-PAGE.
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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Data Display
SDS-PAGE

FITC-Labeled Human B7-H3 (4Ig), Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).
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), Fc Tag (Cat. No. B7B-HF2F4) with a linear range of 0.02-0.625 μg/mL (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 Introduction
Frontier Progress
- English Name:
CD276 antigen
- Category:
- Listed Drugs Count:
0 Details
- Clinical Drugs Count:
72 Details
- Highest R&D Stage:
NDA/BLA



















