Dystrophin is a rod-shaped cytoskeletal protein that is encoded by the DMD gene located on the X chromosome. It spans a length of approximately 427 kDa and is pivotal for the formation of the DAPC. Dystrophin acts as a critical linker between the internal actin filaments and the transmembrane proteins of the DAPC. This linkage is vital for the mechanical stability and signal transduction within muscle cells.
