Delta-sarcoglycan is a protein that plays a crucial role in the structure and function of muscle cells. It is part of a group of proteins known as the sarcoglycan complex, which helps maintain the integrity of the muscle cell membrane. This protein is particularly important in skeletal and cardiac muscles, where it contributes to muscle stability during contraction. Mutations in the gene that encodes delta-sarcoglycan can lead to various forms of muscular dystrophy, a group of diseases characterized by progressive muscle weakness and degeneration. Understanding the function of delta-sarcoglycan is essential for developing potential therapies for these conditions, highlighting its significance in muscle health.