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Description
FITC-Labeled B7-H3/CD276 Fc Chimera Protein, HumanProduct Specification Species Human Synonyms B7 homolog 3 (B7 H3),CD276,B7 homolog 3 Accession Q5ZPR3 2 Amino Acid Sequence Leu29 Pro245 with Human IgG1 Fc at the C Terminus Expression System HEK293 Molecular Weight 60 70kDa Conjugation FITC Tag Human IgG1 Fc Physical Appearance Liquid Storage Buffer PBS, pH7. 4 Stability & Storage 12 months from date of receipt, lyophilized powder stored at 20 to 80. 3 months, 20 to 80 under sterile conditions after
Product Specification
| Species | Human |
| Synonyms | B7 homolog 3 (B7-H3),CD276,B7 homolog 3 |
| Accession | Q5ZPR3-2 |
| Amino Acid Sequence | Leu29-Pro245 with Human IgG1 Fc at the C-Terminus |
| Expression System | HEK293 |
| Molecular Weight | 60-70kDa |
| Conjugation | FITC |
| Tag | Human IgG1 Fc |
| Physical Appearance | Liquid |
| Storage Buffer | PBS, pH7.4 |
| Stability & Storage | · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃. |
| Reference | 1. A I Chapoval et al. B7-H3: a costimulatory molecule for T cell activation and IFN-gamma production.Nat Immunol. 2001 Mar;2(3):269-74. |
Background
B7 homolog 3 (B7-H3, CD276) is a member of the B7 family of cell surface ligands that regulate T cell activation and immune responses. B7-H3 protein contains two extracellular Ig-like V-type domains and two IgG-like C2-type domains, a transmembrane domain, and a short intracellular domain. Early research examining the biological process of B7-H3 suggested that B7-H3 is a positive regulator of T cell response. Subsequent research studies indicated that B7-H3 is a negative regulator of T cell response, and that the protein inhibits T cell proliferation. One possibility is that B7-H3 interacts with two distinct sets of receptors, resulting in seemingly opposite biological outcomes. B7-H3 is expressed by antigen presenting cells, activated T cells, and a few normal tissues, including placenta and prostate. Expression of B7-H3 is seen in several cancer types, including prostate, breast, colon, lung, and gastric cancers, and in endothelial cells from tumor associated vasculature.
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