Adapter protein that binds to and probably organizes the subcellular localization of a variety of membrane proteins. May link various receptors to the actin cytoskeleton and the dystrophin glycoprotein complex.
Subcellular locations: Cell membrane, Sarcolemma, Cell junction, Cytoplasm, Cytoskeleton
In skeletal muscle, it localizes at the cytoplasmic side of the sarcolemmal membrane and at neuromuscular junctions.
Ubiquitous.