کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10823619 1061912 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduced repair of DNA double-strand breaks by homologous recombination in a DNA ligase I-deficient human cell line
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Reduced repair of DNA double-strand breaks by homologous recombination in a DNA ligase I-deficient human cell line
چکیده انگلیسی
Genetic and biochemical studies of mammalian DNA ligase I indicate that this multifunctional enzyme plays a key role in the completion of DNA replication and certain DNA excision repair pathways. However, the involvement of DNA ligase I in DNA double-strand break repair has not been examined. Here we have determined the effect of DNA ligase I-deficiency on the frequency of homologous recombination initiated by a site-specific DNA double-strand break. We found that expression of wild-type DNA ligase I in a human DNA ligase I mutant cell line significantly increased the frequency of homologous recombination. Notably, the ability of DNA ligase I to promote the recombinational repair of DNA double-strand breaks was dependent upon its interaction with proliferating cell nuclear antigen. Thus, our results demonstrate that DNA ligase I-deficiency reduces recombinational repair of DNA double-strand breaks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: DNA Repair - Volume 4, Issue 6, 8 June 2005, Pages 649-654
نویسندگان
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