Evidence for Transitional Stages in the Evolution of Euglenid Group II Introns and Twintrons in the Monomorphina aenigmatica Plastid Genome

@article{Pombert2012EvidenceFT,
  title={Evidence for Transitional Stages in the Evolution of Euglenid Group II Introns and Twintrons in the Monomorphina aenigmatica Plastid Genome},
  author={Jean-François Pombert and E. James and J. Janou{\vs}kovec and P. Keeling},
  journal={PLoS ONE},
  year={2012},
  volume={7}
}
Background Photosynthetic euglenids acquired their plastid by secondary endosymbiosis of a prasinophyte-like green alga. But unlike its prasinophyte counterparts, the plastid genome of the euglenid Euglena gracilis is riddled with introns that interrupt almost every protein-encoding gene. The atypical group II introns and twintrons (introns-within-introns) found in the E. gracilis plastid have been hypothesized to have been acquired late in the evolution of euglenids, implying that massive… Expand
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