|19781||Phospho-STING (Ser366) (D7C3S) Rabbit mAb||
|40818||Phospho-STING (Ser366) (D8K6H) Rabbit mAb||
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.
Phospho-STING (Ser366) Antibody recognizes endogenous levels of STING protein only when phosphorylated at Ser366.
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ser366 of human STING protein. Antibodies are purified by protein A and peptide affinity chromatography.
Stimulator of interferon genes (STING, TMEM173, MITA) is a transmembrane adaptor protein that is a critical component of the cellular innate immune response to pathogenic cytoplasmic DNA (1,2). STING is a ubiquitously expressed protein found predominantly in the ER (1). The enzyme cGAMP synthase (cGAS) produces the second messenger cyclic-GMP-AMP (cGAMP) in response to cytoplasmic DNA (3,4). cGAMP binds and activates STING (3,4). In addition, detection of cytoplasmic DNA by nucleic acid sensors, including DDX41 or IFI16, results in STING activation (5,6). Following activation, STING translocates with TBK1 to perinuclear endosomes (7). The TBK1 kinase phosphorylates and activates interferon regulatory factors (IRFs) and NF-κB, which leads to the induction of type I interferon and other immune response genes (1,2,7).
Following activation and trafficking, STING gets phosphorylated by ULK1 at Ser366 (Ser365 in mouse), which leads to STING inactivation and eventually lysosomal degradation (8).
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