Deep mitochondrial origin outside the sampled alphaproteobacteria

@article{Martijn2018DeepMO,
  title={Deep mitochondrial origin outside the sampled alphaproteobacteria},
  author={Joran Martijn and Julian Vosseberg and Lionel Guy and Pierre Offre and Thijs J. G. Ettema},
  journal={Nature},
  year={2018},
  volume={557},
  pages={101-105}
}
Mitochondria are ATP-generating organelles, the endosymbiotic origin of which was a key event in the evolution of eukaryotic cells1. Despite strong phylogenetic evidence that mitochondria had an alphaproteobacterial ancestry2, efforts to pinpoint their closest relatives among sampled alphaproteobacteria have generated conflicting results, complicating detailed inferences about the identity and nature of the mitochondrial ancestor. While most studies support the idea that mitochondria evolved… 
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