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http://purl.uniprot.org/citations/17519253http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/17519253http://www.w3.org/2000/01/rdf-schema#comment"Aprataxin is the causative gene product for early-onset ataxia with ocular motor apraxia and hypoalbuminemia/ataxia with oculomotor apraxia type 1 (EAOH/AOA1), the clinical symptoms of which are predominantly neurological. Although aprataxin has been suggested to be related to DNA single-strand break repair (SSBR), the physiological function of aprataxin remains to be elucidated. DNA single-strand breaks (SSBs) continually produced by endogenous reactive oxygen species or exogenous genotoxic agents, typically possess damaged 3'-ends including 3'-phosphate, 3'-phosphoglycolate, or 3'-alpha, beta-unsaturated aldehyde ends. These damaged 3'-ends should be restored to 3'-hydroxyl ends for subsequent repair processes. Here we demonstrate by in vitro assay that recombinant human aprataxin specifically removes 3'-phosphoglycolate and 3'-phosphate ends at DNA 3'-ends, but not 3'-alpha, beta-unsaturated aldehyde ends, and can act with DNA polymerase beta and DNA ligase III to repair SSBs with these damaged 3'-ends. Furthermore, disease-associated mutant forms of aprataxin lack this removal activity. The findings indicate that aprataxin has an important role in SSBR, that is, it removes blocking molecules from 3'-ends, and that the accumulation of unrepaired SSBs with damaged 3'-ends underlies the pathogenesis of EAOH/AOA1. The findings will provide new insight into the mechanism underlying degeneration and DNA repair in neurons."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.org/dc/terms/identifier"doi:10.1093/nar/gkm158"xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Koyama A."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Nishizawa M."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Takahashi T."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Yoshida Y."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Igarashi S."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Tsuji S."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Onodera O."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Tada M."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Date H."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Shiga A."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/author"Yokoseki A."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/date"2007"xsd:gYear
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/name"Nucleic Acids Res"xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/pages"3797-3809"xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/title"Aprataxin, causative gene product for EAOH/AOA1, repairs DNA single-strand breaks with damaged 3'-phosphate and 3'-phosphoglycolate ends."xsd:string
http://purl.uniprot.org/citations/17519253http://purl.uniprot.org/core/volume"35"xsd:string
http://purl.uniprot.org/citations/17519253http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/17519253
http://purl.uniprot.org/citations/17519253http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/17519253
http://purl.uniprot.org/uniprot/Q7Z2E3#attribution-D59808D95809E78B9C7BB0562893BAA1http://purl.uniprot.org/core/sourcehttp://purl.uniprot.org/citations/17519253