Reduced mutation rate in exons due to differential mismatch repair.
Reduced mutation rate in exons due to differential mismatch repair.
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DOI:
10.1038/ng.3991
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发表时间:
2017-12
期刊:
影响因子:
30.8
通讯作者:
López-Bigas N
中科院分区:
文献类型:
--
作者:
Frigola J;Sabarinathan R;Mularoni L;Muiños F;Gonzalez-Perez A;López-Bigas N
While recent studies have revealed higher than anticipated heterogeneity of mutation rate across genomic regions, mutations in exons and introns are assumed to be generated at the same rate. Here we find fewer somatic mutations in exons than expected based on their sequence content, and demonstrate that this is not due to purifying selection. Moreover, we show that it is caused by higher mismatch repair activity in exonic than in intronic regions. Our findings have important implications for our understanding of mutational and DNA repair processes, our knowledge of the evolution of eukaryotic genes, and practical ramifications for the study of the evolution of both tumors and species.
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DOI:
10.1038/nrc1299
发表时间:
2004-03
期刊:
Nature reviews. Cancer
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