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Microbial Rhodopsins.

Valentin Gordeliy1, Kirill Kovalev2,3,4,5,6, Ernst Bamberg7

  • 1Institut de Biologie Structurale (IBS), Université Grenoble Alpes, CEA, CNRS, Grenoble, France. valentin.gordeliy@ibs.fr.

Methods in Molecular Biology (Clifton, N.J.)
|July 20, 2022
PubMed
Summary
This summary is machine-generated.

Microbial rhodopsins, like bacteriorhodopsin, are versatile light-driven pumps found across life. This review explores their diverse functions and structure-function relationships, highlighting their scientific potential.

Keywords:
Ion transportMembrane proteinOptogeneticsRetinalRhodopsin

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Microbial rhodopsins, initially discovered as proton pumps (bacteriorhodopsin), are seven-α-helical proteins with retinal cofactors.
  • Early research focused on archaeal rhodopsins, but a broader discovery in 2000 revealed bacterial rhodopsins, expanding the field.
  • Rhodopsins are now known to exist in all domains of life and even viruses, performing diverse functions.

Purpose of the Study:

  • To review the evolution of microbial rhodopsin research.
  • To highlight the diverse functions and structure-function relationships of rhodopsins.
  • To discuss the scientific and technological potential of these proteins.

Main Methods:

  • Literature review of microbial rhodopsin research.
  • Analysis of function-structure relationships.
  • Exploration of evolutionary trends and discoveries.

Main Results:

  • Discovery of bacteriorhodopsin in 1971 marked the beginning of microbial rhodopsin research.
  • Expansion of known rhodopsins from archaea to bacteria, eukaryotes, and viruses.
  • Identification of diverse functions including proton/chloride pumping and photosensing.

Conclusions:

  • Rhodopsins exhibit remarkable functional diversity despite structural similarities.
  • The field has evolved significantly since the discovery of bacteriorhodopsin.
  • Rhodopsins hold substantial scientific and technological promise.