Inborn errors of pyrimidine degradation: Clinical, biochemical and molecular aspects

Abstract excerpt

The pyrimidines, uracil and thymine, are degraded in four steps. The first three steps of pyrimidine catabolism, controlled by enzyme shared by both pathways, result in the production of the neurotransmitter amino acid beta-alanine from uracil and the nonfunctional (R)-(-)-beta-aminoisobutyrate from thymine. The fourth step is controlled by several aminotransferases, which have different affinities for...

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