Recombinant Human B7-H3 (C-6His)
Recombinant Human B7 Homolog 3 is produced by our Mammalian expression system and the target gene encoding Leu29-Thr461 is expressed with a 6His tag at the C-terminus.
Product Specifications
Background
CD276, also known as B7-H3, is a member of the B7 superfamily with signature IgV and IgG regions in extracellular domains. It is a type I transmembrane protein and shares 20–27% amino acid identity with other B7 family members. B7-H3 is involved in the activation of T lymphocytes, and regulates murine bone formation. It is also reported that B7-H3 may play an important role in muscle-immune interactions, providing further evidence of the active role of muscle cells in local immunoregulatory processes. B7-H3 is expressed on T-cells, natural killer cells, and antigen presenting cells, as well as some non-immune cells, such as osteoblasts, fibroblasts, fibroblast-like synoviocytes and epithelial cells. High expression of B7-H3 in tumor vasculature also correlates with poor survival in patients, suggesting that it may play a role in tumor cell migration.
UniProt
Q5ZPR3
Accession Number
Q5ZPR3
Endotoxin
Less than 0.1 ng/μg (1 EU/μg) as determined by LAL test.
Purity
Greater than 95% as determined by reducing SDS-PAGE.
Bioactivity
Immobilized Human B7-H3-His (Cat#CK62) at 2μg/ml (100 μl/well) can bind Anti-Human B7-H3 mAb (Cat#NC055) The ED50 of Anti-Human B7-H3 mAb (Cat#NC055) is 7.98 ng/ml.
Molecular Weight
47.3 KDa
Shipping Conditions
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Storage Conditions
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Storage Temperature
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Notes
Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Observed Molecular Weight
65-90 KDa, reducing conditions
Other Product Names
CD276; B7H34Ig-B7-H3; B7-H3; B7 homolog 3; CD276 antigen; CD276 molecule; Costimulatory molecule
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