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Nucleotide excision repair (NER) in mammalian cells requires the xeroderma pigmentosum group A protein (XPA) as a core factor. Remarkably, XPA and other NER proteins have been detected by chromatin immunoprecipitation at some active promoters, and NER deficiency is reported to influence the activated transcription of selected genes. However, the global influence of XPA on transcription in human cells...
The ERCC1 and ERCC4 genes encode the two subunits of the ERCC1–XPF nuclease. This enzyme plays an important role in repair of DNA damage and in maintaining genomic stability. ERCC1–XPF nuclease nicks DNA specifically at junctions between double-stranded and single-stranded DNA, when the single-strand is oriented 5′ to 3′ away from a junction. ERCC1–XPF is a core component of nucleotide excision repair...
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