Mutation of a nuclear respiratory factor 2 binding site in the 5' untranslated region of the ADSL gene in three patients with adenylosuccinate lyase deficiency

التفاصيل البيبلوغرافية
العنوان: Mutation of a nuclear respiratory factor 2 binding site in the 5' untranslated region of the ADSL gene in three patients with adenylosuccinate lyase deficiency
المؤلفون: V. Race, Sandrine Marie, G Van den Berghe, Marie-Françoise Vincent, Marie-Cécile Nassogne
المساهمون: UCL - MD/BICL - Département de biochimie et de biologie cellulaire, UCL - MD/GYPE - Département de gynécologie, d'obstétrique et de pédiatrie, UCL - (SLuc) Service de neurologie pédiatrique, UCL - MD/NOPS - Département de neurologie et de psychiatrie
المصدر: American journal of human genetics, Vol. 71, no. 1, p. 14-21 (2002)
سنة النشر: 2001
مصطلحات موضوعية: Untranslated region, DNA, Complementary, Five prime untranslated region, Molecular Sequence Data, Mutation, Missense, Biology, chemistry.chemical_compound, Mental Retardation, Intellectual Disability, medicine, Genetics, Missense mutation, Coding region, Humans, Genetics(clinical), RNA, Messenger, Cloning, Molecular, Adenylosuccinate lyase, Promoter Regions, Genetic, Gene, Genetics (clinical), Alleles, Adenylosuccinate lyase deficiency, Binding Sites, Epilepsy, Base Sequence, Adenylosuccinate Lyase, Chromosome Mapping, Articles, medicine.disease, Molecular biology, GA-Binding Protein Transcription Factor, DNA-Binding Proteins, chemistry, Adenylosuccinate, Mutation, Mutagenesis, Site-Directed, Female, Promoter Regions (Genetics), 5' Untranslated Regions, Transcription Factors
الوصف: Adenylosuccinate lyase (ADSL; also called "adenylosuccinase") catalyzes two steps in the synthesis of purine nucleotides: (1) the conversion of succinylaminoimidazolecarboxamide ribotide into aminoimidazolecarboxamide ribotide and (2) the conversion of adenylosuccinate into adenosine monophosphate. ADSL deficiency, a recessively inherited disorder, causes variable-but most often severe-mental retardation, frequently accompanied by epilepsy and/or autism. It is characterized by the accumulation, in body fluids, of succinylaminoimidazolecarboxamide riboside and succinyladenosine, the dephosphorylated derivatives of the two substrates of the enzyme. Analysis of the ADSL gene of three unrelated patients with ADSL deficiency, in whom one of the ADSL alleles displayed a normal coding sequence, revealed a -49T-->C mutation in the 5' untranslated region of this allele. Measurements of the amount of mRNA transcribed from the latter allele showed that it was reduced to approximately 33% of that transcribed from the alleles mutated in their coding sequence. Further investigations showed that the -49T-->C mutation provokes a reduction to 25% of wild-type control of promoter function, as evaluated by luciferase activity and mRNA level in transfection experiments. The mutation also affects the binding of nuclear respiratory factor 2 (NRF-2), a known activator of transcription, as assessed by gel-shift studies. Our findings indicate that a mutation of a regulatory region of the ADSL gene might be an unusually frequent cause of ADSL deficiency, and they suggest a role for NRF-2 in the gene regulation of the purine biosynthetic pathway.
تدمد: 0002-9297
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::310f5e738bae2d2880ff70065d1b56d3Test
https://pubmed.ncbi.nlm.nih.gov/12016589Test
حقوق: OPEN
رقم الانضمام: edsair.doi.dedup.....310f5e738bae2d2880ff70065d1b56d3
قاعدة البيانات: OpenAIRE