Human TIGIT, Mouse IgG2a Fc Tag (TIT-H5253) is expressed from human 293 cells (HEK293). It contains AA Met 22 - Pro 141 (Accession # Q495A1-1).
Predicted N-terminus: Met 22
This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 40.1 kDa. The protein migrates as 42-50 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Less than 0.1 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.
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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:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Human TIGIT, Mouse IgG2a Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
Immobilized Human CD155, Fc Tag (Cat. No. CD5-H5251) at 5 μg/mL (100 μL/well) can bind Human TIGIT, Mouse IgG2a Fc Tag (Cat. No. TIT-H5253) with a linear range of 1-16 ng/mL (QC tested).
Serial dilutions of TIGIT antibody antibody (1:2 serial dilutions, from 20 μg/mL to 0.0097 μg/mL) were added into Human TIGIT, Mouse IgG2a Fc Tag (Cat. No. TIT-H5253): Biotinylated Human Nectin-2, Fc,Avitag (Cat. No. CD2-H82F8) binding reactions. The assay was performed according to the above described protocol. Background was subtracted from data points before curve fitting.
Loaded Human TIGIT, Mouse IgG2a Fc Tag (Cat. No. TIT-H5253) on Protein A Biosensor, can bind Human CD155, His Tag (Cat. No. CD5-H5223) with an affinity constant of 0.92 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
FACS assay shows that Human TIGIT, Mouse IgG2a Fc Tag (Cat. No. TIT-H5253) can bind to 293T cell overexpressing human CD155. The concentration of TIGIT used is 0.03 μg/mL (Routinely tested).
TIGIT (also called T cell immunoreceptor with Ig and ITIM domains) is one newly discovered immune receptor on some percentage of T cells and Natural Killer Cells(NK). It is also identified as WUCAM and Vstm3. TIGIT could bind to CD155(PVR) on dendritic cells(DCs), macrophages, etc. with high affinity, and also to CD112(PVRL2) with lower affinity. TIGIT expressing CD8+ T cells has been shown to be expanded and associated with clinical markers of HIV disease progression in a diverse group of HIV infected individuals. TIGIT and PD-1 has been shown to be over expressed on tumor antigen-sepcific (TA-specific) CD8+ T cells and CD8+ tumor infiltrating lymphocytes (TILs) from individuals with melanoma. Blockade of TIGIT and PD-1 led to increased cell proliferation, cytokine production, and degranulation of TA-specific CD8+ T cells and TIL CD8+ T cells.