Non-homologous end-joining: bacteria join the chromosome breakdance.

Thomas E Wilson, Leana M Topper, Phillip L Palmbos

Journal: Trends in biochemical sciences 2003;28(2):62-6

PMID: 12575991

Full Text on Elsevier Science View on PubMed

Abstract

The repair of DNA double-strand breaks by non-homologous end-joining (NHEJ) has long been thought to be restricted to eukaryotes. However, recent papers document the existence of operons encoding functional NHEJ complexes in some bacteria. These findings provide new evolutionary insights into the core biochemistry of this repair pathway, and suggest that one function driving the selection of NHEJ in bacteria, and perhaps eukaryotes, relates to prolonged periods of mitotic exit.

Address: Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109-0602, USA. [email protected]

DOI: 10.1016/S0968-0004(03)00005-7

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MeSH Terms: Bacteria, Chromosomes, Bacterial, DNA Ligases, DNA Repair, DNA-Binding Proteins, Humans, Sequence Alignment, Sequence Homology, Amino Acid