1. Recombinant Proteins
  2. B7-H3/ICOSLG Protein, Human (HEK293, Fc)

B7-H3/ICOSLG Protein, Human (HEK293, Fc)

Cat. No.: HY-P7326
Handling Instructions

B7-H3/ICOSLG Protein, Human (HEK293, Fc) is a polypeptide chain containing the C-termimal His tag produced in HEK293 cells. B7-H3 is an immune checkpoint from the B7 family of molecules.

For research use only. We do not sell to patients.

Protein Expression Service

Recombinant Proteins-MedChemExpress
Size Price Stock Quantity
10 μg $230 In-stock
Estimated Time of Arrival: December 31
50 μg $650 In-stock
Estimated Time of Arrival: December 31
100 μg   Get quote  
250 μg   Get quote  

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  • Technical Parameters

  • Properties

  • Documentation

rHuB7-H3/ICOSLG, Fc Chimera; B7H3; B7 homolog 3; CD276



HEK 293


Q5ZPR3 (L29-P463)

Gene ID


Molecular Weight

62-65 kDa

AA Sequence



Lyophilized powder.


Lyophilized after extensive dialysis against PBS.

Endotoxin Level

<0.2 EU/μg, determined by LAL method.


It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O or PBS.

Storage & Stability

Stored at -20°C. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer. It is recommended to freeze aliquots at -20°C or -80°C for extended storage.


Room temperature in continental US; may vary elsewhere.


As a member of the B7 family, inducible co-stimulator ligand (ICOSLG) expressed on tumor cell has been reported to have an important role in tumor immunity. As the counter ligand of ICOS, a CD28-related molecule, ICOSLG is expressed on professional antigen-presenting cell (APCs; such as dendritic cells (DCs) and B cells) and on some tumor cells (such as glioma cells and gastric carcinoma cells). ICOSLG is the only B7 family member that preferentially co-stimulates type 2T helper cell (Th2) responses, and interestingly, this unique molecule has a critical role in antitumor immunity. ICOSLG expression on solid tumors (implanted-transfected tumors) aids in both NK mediated and CD8+ cytotoxic T cell (CTL) activation and killing. Several studies using ICOSLG-transfected solid tumor cell lines found that ICOSLG induced CD8+ cytotoxic lymphocyte-mediated tumor regression[1].

  • Molarity Calculator

  • Dilution Calculator

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The dilution calculator equation

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This equation is commonly abbreviated as: C1V1 = C2V2

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Product Name:
B7-H3/ICOSLG Protein, Human (HEK293, Fc)
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