Search results for "Iron-sulfur cluster"

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Friedreich's Ataxia: Autosomal Recessive Disease Caused by an Intronic GAA Triplet Repeat Expansion

1996

International audience; Friedreich's ataxia (FRDA) is an autosomal recessive, degenerative disease that involves the central and peripheral nervous systems and the heart. A gene, X25, was identified in the critical region for the FRDA locus on chromosome 9q13. This gene encodes a 210-amino acid protein, frataxin, that has homologs in distant species such as Caenorhabditis elegans and yeast. A few FRDA patients were found to have point mutations in X25, but the majority were homozygous for an unstable GAA trinucleotide expansion in the first X25 intron.

MaleIron-sulfur cluster assemblyPolymerase Chain Reaction0302 clinical medicineTrinucleotide RepeatsIron-Binding ProteinsGenetics0303 health sciencesMultidisciplinaryAutosomal recessive cerebellar ataxiaPedigree3. Good healthFemalemedicine.symptomChromosomes Human Pair 9HumanPair 9Heterozygotecongenital hereditary and neonatal diseases and abnormalitiesAtaxiaMolecular Sequence DataGenes RecessiveLocus (genetics)BiologyChromosomes03 medical and health sciencesGene mappingAlleles; Amino Acid Sequence; Base Sequence; Chromosomes Human Pair 9; DNA Primers; Female; Friedreich Ataxia; Genes Recessive; Heterozygote; Humans; Male; Molecular Sequence Data; Pedigree; Point Mutation; Polymerase Chain Reaction; Proteins; Sequence Alignment; Introns; Iron-Binding Proteins; Trinucleotide RepeatsmedicineRecessiveHumansPoint MutationAmino Acid SequenceAlleleAllelesDNA Primers030304 developmental biologyBase SequencePoint mutationProteins[SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biologymedicine.diseaseMolecular biologyIntronsGenes[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human geneticsFriedreich AtaxiaFrataxinbiology.proteinSequence Alignment030217 neurology & neurosurgeryScience
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The elemental role of iron in DNA synthesis and repair

2017

Iron is an essential redox element that functions as a cofactor in many metabolic pathways. Critical enzymes in DNA metabolism, including multiple DNA repair enzymes (helicases, nucleases, glycosylases, demethylases) and ribonucleotide reductase, use iron as an indispensable cofactor to function. Recent striking results have revealed that the catalytic subunit of DNA polymerases also contains conserved cysteine-rich motifs that bind iron–sulfur (Fe/S) clusters that are essential for the formation of stable and active complexes. In line with this, mitochondrial and cytoplasmic defects in Fe/S cluster biogenesis and insertion into the nuclear iron-requiring enzymes involved in DNA synthesis a…

Iron-Sulfur Proteins0301 basic medicineDNA RepairDNA polymeraseDNA damageDNA repairIronBiophysicsDNA repairEukaryotic DNA replicationSaccharomyces cerevisiaeBiochemistryDNA GlycosylasesBiomaterials03 medical and health sciencesRibonucleotide ReductasesHumansProtein–DNA interactionRibonucleotide reductaseReplication protein Achemistry.chemical_classificationDNA ligaseDeoxyribonucleasesDNA synthesis030102 biochemistry & molecular biologybiologyIron deficiencyDNA HelicasesMetals and AlloysHelicaseDNAYeast030104 developmental biologyIron cofactorBiochemistrychemistryChemistry (miscellaneous)biology.proteinIron-sulfur clusterMetallomics
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