0003688 Cytochrome C oxidase-negative muscle fibers

synonym Cytochrome c oxidase deficiency in skeletal muscle Decreased skeletal muscle cytochrome c oxidase activity Decreased activity of cytochrome C oxidase in muscle tissue

comment This abnormality can be assayed by muscle biopsy. Cytochrome C oxidase is an enzyme of the respiratory electron transport chain of mitochondria that is located in the mitochondrial membrane.