sentences:  The tertiary structure of utrophin contains a C-terminus that consists of protein–protein interaction motifs that interact with dystroglycan, a central rod region consisting of a triple coiled-coil repeat, and an actin-binding N-terminus.In normal muscle cells, utrophin is located at the neuromuscular synapse and myotendinous junctions.It is necessary for normal membrane maintenance, and for the clustering of the acetylcholine receptor.