Syntrophin alpha-1 (SNTA1)

Syntrophin alpha-1 (SNTA1) is a cytoplasmic peripheral membrane adapter and scaffolding protein that plays a crucial role in organizing the subcellular localization of various membrane and signaling proteins[1][3]. It contains pleckstrin homology domains (PH1 and PH2), a PDZ domain, and a syntrophin-unique domain, facilitating multiple protein-protein and protein-lipid interactions[1]. SNTA1 is a key component of the dystrophin-associated protein complex, especially in skeletal muscle, cardiac muscle, and brain. It helps recruit proteins such as neuronal nitric oxide synthase and channels like aquaporin-4 to the sarcolemma, and links signaling proteins and receptors (such as the cardiac sodium channel Nav1.5) to the actin cytoskeleton and dystrophin complex[2][3]. SNTA1 is implicated in the organization and function of the neuromuscular junction, muscle regeneration, and intracellular signaling. Genetic variants in SNTA1 are associated with cardiac arrhythmias (Long QT syndrome) and sudden infant death syndrome, indicating its clinical significance[3]. There are no established therapeutic drugs or mechanisms of drug action targeting SNTA1 directly, and it is generally not considered a classical therapeutic target such as a receptor or enzyme, but rather a scaffolding/support protein essential for cellular organization and signaling[1][3].

Other names

Alpha-1-syntrophinSNTA1