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Título

Mutations in the urocanase gene UROC1 are associated with urocanic aciduria

AutorEspinós, Carmen ; Pineda, Mercè; Martínez-Rubio, Dolores ; Lupo, Vincenzo ; Ormazabal, Aida; Vilaseca, María A.; Spaapen, Leo J. M.; Palau Martínez, Francesc ; Artuch, Rafael
Palabras claveUrocanic aciduria
Urocanase gene
Intermittent ataxia
Mental retardation
Fecha de publicación2009
EditorBMJ Publishing Group
CitaciónJournal of medical genetics 46(6): 407-11 (2009)
ResumenUrocanase is an enzyme in the histidine pathway encoded by the UROC1 gene. We describe the first putative mutations, p.L70P and p.R450C, in the coding region of the UROC1 gene in a girl who suffers from urocanic aciduria presenting with mental retardation and intermittent ataxia. In silico predictions, protein expression studies and enzyme activity assays suggest that none of the mutations can produce a fully functional enzyme. The p.L70P substitution, which probably imply the disruption of an alpha-helix in the N-terminus, would alter its properties and therefore, its function. The p.R450C change would render impossible any interaction between urocanase and its substrate and would loss its enzyme activity. Consequently, these studies suggest that both mutations could alter the correct activity of urocanase, which would explain the clinical and biochemical findings described in the patient.
Descripción22 p., figuras y bibliografía
Versión del editorhttp://dx.doi.org/10.1136/jmg.2008.060632
URIhttp://hdl.handle.net/10261/41793
DOI10.1136/jmg.2008.060632
ISSN0022-2593
E-ISSN1468-6244
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