Transcriptional response to DNA damage in the archaeon Sulfolobus solfataricus.

ABSTRACT: Exposure of cells to DNA-damaging agents triggers a complex biological response involving cell cycle arrest and modulation of gene expression. Genomic sequencing has revealed the presence of archaeal genes homologous to components of the eucaryal nucleotide excision repair (NER) pathway, which is involved in the repair of ultraviolet (UV) light-induced DNA damage. However, the events involved in the cell response to UV irradiation and their regulation have not been studied in Archaea. We show here that UV radiation induces the formation of cyclobutane pyrimidine dimers (CPDs) in the hyperthermophilic archaeon Sulfolobus solfataricus, and that these lesions are efficiently repaired in vivo in the dark, suggesting that a NER pathway is active. DNA damage is a signal for concomitant growth ar

SUBMITTER: Salerno V 

PROVIDER: S-EPMC275473 | biostudies-literature | 2003 Nov

REPOSITORIES: biostudies-literature