| Literature DB >> 27931778 |
Aviram Rasouly1, Bibhusita Pani2, Evgeny Nudler3.
Abstract
Nucleotide excision repair (NER) is the key DNA repair system that eliminates the majority of DNA helix-distorting lesions. RNA polymerase (RNAP) expedites the recognition of DNA damage by NER components via transcription-coupled DNA repair (TCR). In bacteria, a modified nucleotide ppGpp ('magic spot') is a pleiotropic second messenger that mediates the response to nutrient deficiencies by altering the initiation properties of RNAP. In this review, we discuss newly elucidated roles of guanosine 5'-diphosphate 3'-diphosphate (ppGpp) in transcription elongation that couple this alarmone to DNA damage repair and maintenance.Entities:
Keywords: DNA repair; backtracking; mutation rate; ppGpp; transcription elongation
Mesh:
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Year: 2016 PMID: 27931778 PMCID: PMC5182163 DOI: 10.1016/j.tig.2016.11.002
Source DB: PubMed Journal: Trends Genet ISSN: 0168-9525 Impact factor: 11.639