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This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 50.0 kDa. The protein migrates as 65-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
>95% as determined by SDS-PAGE.
>95% as determined by SEC-MALS.
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 100 mM Glycine, pH7.5. Normally trehalose is added as protectant before lyophilization.
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, 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%.
The purity of Human B7-1, Fc Tag (Cat. No. B71-H5259) is more than 95% and the molecular weight of this protein is around 125-135 kDa verified by SEC-MALS.
Immobilized Human / Cynomolgus / Rhesus macaque CD28, Fc Tag (Cat. No. CD8-H525a) on CM5 Chip can bind Human B7-1, Fc Tag (Cat. No. B71-H5259) with an affinity constant of 2.01 μM as determined in a SPR assay (Biacore T200) (Routinely tested).
Loaded Human B7-1, Fc Tag (Cat. No. B71-H5259) on Protein A Biosensor, can bind Human / Cynomolgus / Rhesus macaque CD28, His Tag (Cat. No. CD8-H52Hc) with an affinity constant of 5.1 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Loaded Human B7-1, Fc Tag (Cat. No. B71-H5259) on Protein A Biosensor, can bind Human CTLA-4, His Tag, active dimer (Cat. No. CT4-H52H9) with an affinity constant of 0.498 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
FACS assay shows that Human B7-1, Fc Tag (Cat. No. B71-H5259) can bind to 293T cells overexpressing human CTLA4 protein. The concentration of Human B7-1 is 1 μg/mL (Routinely tested).
Comprehensive in vitro characterization of PD-L1 small molecule inhibitors
Authors: Ganesan A, et al
Journal: Sci Rep 2019
Application: SPR
Authors: G Aravindhan, et al.
Journal: BBA-GEN SUBJECTS 2018
Application: ELISA
Functional analysis of acquired CD28 mutations identified in cutaneous T cell lymphoma
Authors: Grzegorz B. Gmyrek, et al.
Journal: Cell Immunol 2017
Application: Binding assays
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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