Infectious Disease Detection Kit

This HTRF kit enables the cell-based quantitative detection of mouse phosphorylated STING as a readout of the activation of the cGAS-STING pathway.

OverView

This HTRF cell-based assay conveniently and accurately quantifies mouse phosphorylated STING at Ser365. Following pathogen infection and binding of dsDNA to the cytoplasmic sensor cGAS, STING protein is phosphorylated by TBK1. This enables its binding to IRF3, which induces IFNs type 1 production and other immune responses. The STING pathway is then switched off by STING degradation involving autophagy.

Other Specifications

Unit Size 500 Assay Points

How it works

Mouse Phospho-STING (Ser365) assay principle

The Mouse Phospho-STING (Ser365) assay measures mouse STING when phosphorylated at Ser365. Unlike Western Blot, the assay is entirely plate-based and does not require gels, electrophoresis, or transfer. The Mouse Phospho-STING (Ser365) assay uses 2 labeled antibodies: one with a donor fluorophore, the other one with an acceptor. The first antibody is selected for its specific binding to the phosphorylated motif on the protein, the second for its ability to recognize the protein independent of its phosphorylation state. Protein phosphorylation enables an immune-complex formation involving the two labeled antibodies. This brings the donor fluorophore into close proximity to the acceptor, thereby generating a FRET signal. Its intensity is directly proportional to the concentration of phosphorylated protein present in the sample, and provides a means of assessing the protein's phosphorylation state under a no-wash assay format.