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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Diversity of retron elements in a population of rhizobia and other gram-negative bacteria.

Genetic elements called retrons reside on the chromosome of Escherichia coli and the myxobacteria and represent the first reverse transcriptase-encoding element to be found in a prokaryotic cell. All known retrons produce a functionally obscure RNA-DNA satellite molecule called multicopy single-stranded DNA (msDNA). We report here the presence of msDNA-producing retron elements in a number of new bacterial groups, including strains of the genera Proteus, Klebsiella, Salmonella, Nannocystis, Rhizobium, and Bradyrhizobium. Among a population of 63 rhizobia strains, only 16% contain a retron element. The rhizobia retrons appear to be heterogeneous in nucleotide sequence and show little similarity to previously studied retrons of E. coli and the myxobacteria.[1]


  1. Diversity of retron elements in a population of rhizobia and other gram-negative bacteria. Rice, S.A., Bieber, J., Chun, J.Y., Stacey, G., Lampson, B.C. J. Bacteriol. (1993) [Pubmed]
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