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Related Experiment Videos

The hydrogen hypothesis for the first eukaryote

W Martin1, M Müller

  • 1Institut für Genetik, Technische Universität Braunschweig, Germany. w.martin@tu-bs.de

Nature
|March 24, 1998
PubMed
Summary
This summary is machine-generated.

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A novel hypothesis suggests eukaryotic cells originated from a symbiotic partnership. An anaerobic archaebacterium host relied on hydrogen produced by a respiring eubacterium symbiont, driving eukaryotic cell evolution.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Evolutionary Biology

Background:

  • The origin of eukaryotic cells remains a complex evolutionary question.
  • Understanding the bioenergetic relationships between early prokaryotic life forms is crucial.

Purpose of the Study:

  • To propose a new hypothesis for the origin of eukaryotic cells.
  • To explain the selective pressures leading to eukaryotic cell formation based on energy metabolism.

Main Methods:

  • Comparative analysis of energy metabolism in prokaryotes.
  • Biochemical investigation of symbiotic interactions.

Main Results:

  • Proposes a model involving an anaerobic, hydrogen-dependent archaebacterium host.

Related Experiment Videos

  • Suggests a eubacterium symbiont producing hydrogen as a metabolic byproduct.
  • Identifies host dependence on symbiont-produced hydrogen as a key evolutionary driver.

    • Conclusions:

    • The symbiotic association between these specific prokaryotes, driven by hydrogen metabolism, is hypothesized to be the origin of eukaryotic cells.
    • This model provides a biochemical basis for the selective principle that forged the common ancestor of eukaryotes.