Abstract
Objectives Evaluation of a non-synonymous mutation associated with dihydropyrimidine dehydrogenase (DPD) deficiency. Design and methods DPD enzyme analysis, mutation analysis and molecular dynamics simulations based on the 3D-model of DPD. Results The substitution Lys63Glu is likely to affect the FAD binding pocket within the DPD protein and contributes to a near-complete DPD deficiency in a patient with developmental retardation. Conclusions Like other DPD variants attenuating FAD binding, Lys63Glu should be included in screening for DPD deficiency.
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