Different patterns of evolution for duplicated DNA repair genes in bacteria of the Xanthomonadales group.

ABSTRACT:

Background

DNA repair genes encode proteins that protect organisms against genetic damage generated by environmental agents and by-products of cell metabolism. The importance of these genes in life maintenance is supported by their high conservation, and the presence of duplications of such genes may be easily traced, especially in prokaryotic genomes.

Results

The genome sequences of two Xanthomonas species were used as the basis for phylogenetic analyses of genes related to DNA repair that were found duplicated. Although 16S rRNA phylogenetic analyses confirm their classification at the basis of the gamma proteobacteria subdivision, differences were found in the origin of the various genes investigated. Except for lexA, detected as a recent duplication, most of the genes in

SUBMITTER: Martins-Pinheiro M 

PROVIDER: S-EPMC518961 | biostudies-literature | 2004 Aug

REPOSITORIES: biostudies-literature