Dystrophin, the Protein That Is Defective in Muscular Dystrophy, Is

Dystrophin, the protein that is defective in muscular dystrophy, is normally found

A) between the outermost myofilaments and the sarcolemma of a muscle fiber.
B) as a transmembrane protein of the sarcolemma.
C) in the Z discs of skeletal and cardiac muscle.
D) in the dense bodies of smooth muscle.
E) bridging the gap between the sarcolemma and synaptic knob.