Sawyeria marylandensis (Heterolobosea) has a hydrogenosome with novel metabolic properties.

@article{Barber2010SawyeriaM,
  title={Sawyeria marylandensis (Heterolobosea) has a hydrogenosome with novel metabolic properties.},
  author={Maria Jos{\'e} Barber{\`a} and I{\~n}aki Ruiz-Trillo and Julia Y A Tufts and Amandine Bery and Jeffrey D. Silberman and Andrew J. Roger},
  journal={Eukaryotic cell},
  year={2010},
  volume={9 12},
  pages={1913-24}
}
Protists that live under low-oxygen conditions often lack conventional mitochondria and instead possess mitochondrion-related organelles (MROs) with distinct biochemical functions. Studies of mostly parasitic organisms have suggested that these organelles could be classified into two general types: hydrogenosomes and mitosomes. Hydrogenosomes, found in parabasalids, anaerobic chytrid fungi, and ciliates, metabolize pyruvate anaerobically to generate ATP, acetate, CO(2), and hydrogen gas… CONTINUE READING