Human B7-H3/CD276 Protein

CAT#: ICP-A007

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Overview Specification
Species Human
Tag C-His
Expression Systems Expi293
Keywords Human; C-His; Expi293
Synonyms B7H3; B7-H3; CD276; PSEC0249; UNQ309; PRO352; B7 homolog 3; CD276
Background B7-H3, a member of the B7 family of immunomodulatory molecules, is overexpressed in a wide range of solid cancers.B7-H3 binds to activated T cells via an as yet unidentified receptor. In assays using sub-optimal amounts so anti-CD3 stimulation, 2Ig‑B7‑H3 enhances T cell proliferation, T cell interferon-gamma (IFN-gamma) production, and cytotoxic T cell induction.
Source Recombinant Human B7-H3/CD276 Protein is expressed from Expi293 with His tag at the C-terminal. It contains Leu29-Pro245.
Molecular Weight The protein has a predicted MW of 24.7 kDa. Due to glycosylation, the protein migrates to 40-50 kDa based on Tris-Bis PAGE result.
Endotoxin Less than 1 EU per μg by the LAL method.
Purity >95% as determined by Tris-Bis PAGE.
>95% as determined by HPLC.
Formulation Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
Reconstitution Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage -20 to -80℃ for 12 months as supplied from the date of receipt.
-20 to -80℃ for 3-6 months in an unopened state after reconstitution.
2-8℃ for 2-7 days after reconstitution.
Notes Recommend to aliquot the protein into smaller quantities for optimal storage. Please avoid freeze-thaw cycles.
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