UniprotKB/SwissProt ID: P70158 (P70158)
Gene Name:
Smpdl3a
Organism: Mus musculus (Mouse)
Function: Cyclic-nucleotide phosphodiesterase that acts as a negative regulator of innate immunity by mediating degradation of 2',3'-cGAMP, thereby inhibiting the cGAS-STING signaling (PubMed:37890481). Specifically linearizes 2',3'-cGAMP into 2'5'-bond pGpA and further hydrolyzes pGpA to produce GpA (By similarity). Also has in vitro nucleotide phosphodiesterase activity with nucleoside triphosphates, such as ATP (PubMed:26792860). Has in vitro activity with p-nitrophenyl-TMP (By similarity). Has lower activity with nucleoside diphosphates, and no activity with nucleoside monophosphates (By similarity). Has in vitro activity with CDP-choline, giving rise to CMP and phosphocholine (By similarity). Has in vitro activity with CDP-ethanolamine (By similarity). Does not have sphingomyelin phosphodiesterase activity (By similarity)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Secreted
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