Utrophin Kit - 100,000 Tests.Utrophin is an autosomally-encoded 376-kDa cytoskeletal protein that is similar in structure and function to dystrophin. It is a ubiquitously expressed protein that plays a role in anchoring the cytoskeleton to the plasma membrane. Utrophin is highly expressed in developing muscle, and is enriched at the neuromuscular junction of mature muscle. Duchenne's muscular dystrophy patients lack dystrophin, and utrophin is consequently up-regulated and redistributed to locations normally occupied by dystrophin. Cisbio's Utrophin kit is designed for its rapid detection in cell lysates..