Myosin light chains in Duchenne dystrophy and paraplegic muscle.

Myosin light chains were isolated from cat gastrocnemius and soleus muscles rendered paraplegic for 1 year and from the vastus lateralis of six patients with Duchenne muscular dystrophy. Despite the altered pattern of function of these muscles, no alterations were noted in the type or relative proportion of these myosin light chains when compared to control muscles.