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This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 50.9 kDa. The protein migrates as 65-85 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5 with trehalose as protectant.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
Human B7-1, Mouse IgG2a Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
The purity of Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) is more than 90% and the molecular weight of this protein is around 135-155 kDa verified by SEC-MALS.
Immobilized Human CTLA-4, His Tag (Cat. No. CT4-H5229) at 1 μg/mL (100 μL/well) can bind Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) with a linear range of 2-31 ng/mL (QC tested).
Immobilized Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) at 5 μg/mL (100 μL/well) can bind Human PD-L1, Fc Tag (Cat. No. PD1-H5258) with a linear range of 0.01-0.313 μg/mL (Routinely tested).
Serial dilutions of Ipilimumab were added into Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4): Biotinylated Human CTLA-4, Fc,Avitag (Cat. No. CT4-H82F3) binding reactions. The half maximal inhibitory concentration (IC50) is 0.8402 μg/mL (Routinely tested).
Immobilized Biotinylated Mouse CD28, His,Avitag (Cat. No. CD8-M82E3) at 1 μg/mL (100 μL/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate, can bind Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) with a linear range of 0.2-5 ng/mL (Routinely tested).
Immobilized Human / Cynomolgus / Rhesus macaque CD28, Fc Tag (Cat. No. CD8-H525a) on CM5 Chip can bind Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) with an affinity constant of 2.72 μM as determined in a SPR assay (Biacore T200) (Routinely tested).
Loaded Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) on Protein A Biosensor, can bind Human / Cynomolgus / Rhesus macaque CD28, His Tag with an affinity constant of 4.6 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Loaded Biotinylated Human / Cynomolgus / Rhesus macaque CD28, Fc,Avitag (Cat. No. CD8-H82F2) on SA Biosensor, can bind Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) with an affinity constant of 38.3 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Flow Cytometry assay shows that Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) can bind to 293 cell overexpressing human CTLA-4. The concentration of Human B7-1 is 1 μg/mL (Routinely tested).
FACS analysis shows that the binding of Human B7-1, Mouse IgG2a Fc Tag (Cat. No. B71-H52A4) to 293 overexpressing CTLA-4 was inhibited by increasing concentration of neutralizing Anti-human CTLA-4 antibody. The concentration of Human B7-1 is 1 μg /mL. The IC50 is 5.5 μg/mL (Routinely tested).
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