Molecular basis of hereditary fructose intolerance in Italy: identification of two novel mutations in the aldolase B gene.
نویسندگان
چکیده
We screened the aldolase B gene in 14 unrelated Italian patients with hereditary fructose intolerance (HFI), and found two novel disease related mutations: a single nucleotide deletion in exon 2 (delta A20) that leads to an early stop codon, and a C-->T transition in exon 8 that substitutes an Arg with a Trp residue at codon 303 (R303W).
منابع مشابه
Null alleles of the aldolase B gene in patients with hereditary fructose intolerance.
We report three new mutations in the gene for aldolase B that are associated with hereditary fructose intolerance (HFI). Two nonsense mutations create opal termination codons: R3op (C-->T, Arg3-->ter, exon 2) was found in homozygous form in four affected members of a large consanguineous Turkish pedigree and R59op (C-->T, Arg59-->ter, exon 3) was found on one allele in a woman of Austrian origi...
متن کاملFunctional and molecular modelling studies of two hereditary fructose intolerance-causing mutations at arginine 303 in human liver aldolase.
We have identified a novel hereditary fructose intolerance mutation in the aldolase B gene (i.e. liver aldolase) that causes an arginine-to-glutamine substitution at residue 303 (Arg(303)-->Gln). We previously described another mutation (Arg(303)-->Trp) at the same residue. We have expressed the wild-type protein and the two mutated proteins and characterized their kinetic properties. The catal...
متن کاملONLINE MUTATION REPORT Molecular analysis of the aldolase B gene in patients with hereditary fructose intolerance from Spain
Hereditary fructose intolerance (HFI) is an autosomal recessive metabolic disorder caused by aldolase (fructosediphosphate aldolase, EC 4.1.2.13) B deficiency. The B isoform of aldolase is critical for the metabolism of exogenous fructose by the liver, kidney, and intestine, since it can use fructose-1-phosphate as substrate at physiological concentrations, unlike aldolases A and C. Affected su...
متن کاملMolecular analysis of the aldolase B gene in patients with hereditary fructose intolerance from Spain.
Hereditary fructose intolerance (HFI) is an autosomal recessive metabolic disorder caused by aldolase (fructosediphosphate aldolase, EC 4.1.2.13) B deficiency. The B isoform of aldolase is critical for the metabolism of exogenous fructose by the liver, kidney, and intestine, since it can use fructose-1-phosphate as substrate at physiological concentrations, unlike aldolases A and C. Affected su...
متن کاملHereditary fructose intolerance.
Hereditary fructose intolerance (HFI, OMIM 22960), caused by catalytic deficiency of aldolase B (fructose-1,6-bisphosphate aldolase, EC 4.1.2.13), is a recessively inherited condition in which affected homozygotes develop hypoglycaemic and severe abdominal symptoms after taking foods containing fructose and cognate sugars. Continued ingestion of noxious sugars leads to hepatic and renal injury ...
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ورودعنوان ژورنال:
- Journal of medical genetics
دوره 33 9 شماره
صفحات -
تاریخ انتشار 1996