Non-homologous end-joining: bacteria join the chromosome breakdance.
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.
Wilson
Thomas E
TE
Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, 48109-0602, USA. wilsonte@umich.edu
Topper
Leana M
LM
Palmbos
Phillip L
PL
D001419:Bacteria / Q000235:genetics* / Q000378:metabolism; D002876:Chromosomes, Bacterial / Q000235:genetics*; D011088:DNA Ligases / Q000235:genetics; D004260:DNA Repair; D004268:DNA-Binding Proteins / Q000235:genetics* / Q000378:metabolism*; D006801:Humans; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
D004268:DNA-Binding Proteins; D011088:DNA Ligases