Abstract
Summary
Phosphoglucomutase activity determined with and without added coenzyme (glucose-1-6-diphosphate) was increased in white muscles of chicks fed a vit. E-deficient diet, but was unaffected in red muscle. Muscle lesions were more extensive in the white muscle. Normally white muscle contains more PGM than red muscle. The coenzyme for PGM is much more plentiful in white chick muscle than in rat or mouse muscle so that direct determination of maximum PGM activity by saturation of the system with added coenzyme is possible, thus eliminating the necessity of extrapolating to infinite coenzyme concentration.
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