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Alternative oxidase in bacteria.

Anne K Dunn1

  • 1Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, Norman, OK 73019, USA.

Biochimica Et Biophysica Acta. Bioenergetics
|October 20, 2022
PubMed
Summary
This summary is machine-generated.

Alternative oxidase (AOX) in bacteria remains largely unexplored since its 2003 discovery. This review synthesizes current knowledge on bacterial AOX function, characteristics, and distribution, highlighting future research directions.

Keywords:
Aerobic respirationEnergy conservationelectron transport

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Area of Science:

  • Microbiology
  • Biochemistry

Background:

  • Alternative oxidase (AOX) was first identified in bacteria in 2003.
  • Despite its discovery, the expression, function, and evolutionary history of AOX in bacteria are not well understood.
  • Current research is limited to a few species, suggesting a broader role in bacterial physiology.

Approach:

  • This review synthesizes existing literature on bacterial AOX.
  • It details predicted biochemical and structural properties, distribution across bacterial taxa, and known functions.
  • The review also identifies key areas for future investigation.

Key Points:

  • Bacterial AOX likely plays roles in maintaining cellular energy homeostasis and responding to cellular stress.
  • Limited studies in Novosphingobium aromaticivorans and Vibrio fischeri provide initial insights.
  • Understanding AOX in bacteria is crucial for comprehending microbial metabolic diversity.

Conclusions:

  • Further research is needed to fully elucidate the diverse roles and evolutionary significance of AOX in bacteria.
  • Exploring AOX in a wider range of bacterial species will reveal its full impact on microbial life.
  • Future studies should focus on expression patterns, functional mechanisms, and evolutionary trajectories of bacterial AOX.