Abstract
An increased activity of phosphoribosylpyrophosphate synthetase at physiological levels of inorganic phosphate is demonstrated in extracts of skin fibroblast cultures derived from a patient with Lesch-Nyhan syndrome. This eccessive response of the phosphoribosylpyrophosphate synthetase at physiological levels of inorganic phosphate results in increased levels of phosphoribosylpyrophosphate and thus contributes to purine overproduction characteristic of this disorder. The level of enzyme response in skin fibroblast extracts from the carrier mother was between activity of the patient and normals, further suggesting the x-linkage of human phosphoribosylpyrophosphate synthetase.
Published Version
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