Recombinant Human B7-H3/CD276

Recombinant Human B7-H3/CD276  (CK62)

产品说明(Description)

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. 

Accession #: Q5ZPR3

Known as: CD276; B7H34Ig-B7-H3; B7-H3; B7 homolog 3; CD276 antigen; CD276 molecule; Costimulatory molecule

 

制剂(Formulation)

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

 

质量控制(Quality Control)

Purity:        Greater than 95% as determined by reducing SDS-PAGE.    

Endotoxin: Less than 0.1 ng/μg (1 EU/μg) as determined by LAL test.

 

Bioactivity-Elisa:		Bioactivity-BLI:
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.	------	Loaded Anti-Human B7-H3 mAb-Fc(Cat#NC055) on Protein A Biosensor, can bind Human B7-H3-His(Cat#CK62) with an affinity constant of 0.7 nM as determined in BLI assay.

 

复溶(Reconstitution)

Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
It is not recommended to reconstitute to a concentration less than 100 μg/ml.
Dissolve the lyophilized protein in distilled water.
Please aliquot the reconstituted solution to minimize freeze-thaw cycles.    

 

保存(Storage)

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.     

 

背景(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.

 

电泳(SDS-PAGE)

 

FOR RESEARCH USE ONLY