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There are a variety of mechanisms and pathways whereby cells safeguard their genomes in the face of environmental insults that damage DNA. Whether each of these pathways is equally robust at specific developmental stages in mammals and whether they are also modulated in a tissue-specific manner, however, are unclear. Here, we report that ionizing radiation (IR) produces different types of somatic...
Tyrosyl DNA phosphodiesterase-1 (TDP1) is the gene product mutated in spinocerebellar ataxia with axonal neuropathy1 (SCAN1). SCAN1 is a hereditary ataxia that lacks extra-neurological phenotype, pointing to a critical role for TDP1 in the nervous system. Recently, we showed that TDP1 is associated with the DNA single-strand break (SSBR) repair machinery through an interaction with DNA ligase 3α (Lig3α)...
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