Cited by 144Photosynthetic Processes and MechanismsProtist diversity and phylogenyMetalloenzymes and iron-sulfur proteins

Early Archean origin of Photosystem II

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Cardona, Tanai, Sánchez‐Baracaldo, Patricia, Rutherford, A. William, Larkum, Anthony W.·2019·Geobiology

Published version of a preprint

Abstract

Photosystem II is a photochemical reaction center that catalyzes the light-driven oxidation of water to molecular oxygen. Water oxidation is the distinctive photochemical reaction that permitted the evolution of oxygenic photosynthesis and the eventual rise of eukaryotes. At what point during the history of life an ancestral photosystem evolved the capacity to oxidize water still remains unknown. Here, we study the evolution of the core reaction center proteins of Photosystem II using sequence and structural comparisons in combination with Bayesian relaxed molecular clocks. Our results indicate that a homodimeric photosystem with sufficient oxidizing power to split water had already appeared in the early Archean about a billion years before the most recent common ancestor of all described Cyanobacteria capable of oxygenic photosynthesis, and well before the diversification of some of the known groups of anoxygenic photosynthetic bacteria. Based on a structural and functional rationale, we hypothesize that this early Archean photosystem was capable of water oxidation to oxygen and had already evolved protection mechanisms against the formation of reactive oxygen species. This would place primordial forms of oxygenic photosynthesis at a very early stage in the evolutionary history of life.

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  • Most studies suggest an earlier Paleoarchean or Mesoarchean age for oxygenic photosynthesis.

    “While some argue that oxygenic photosynthesis evolved only 50 to 100 Ma before the GOE (115), most studies suggest an earlier Paleoarchean or Mesoarchean age [e.g., (3, 118, 119)].”

    From The Archean atmosphere (2020) · cites this paper as [118]

    The Results (Rates of evolution; page unavailable) favor an origin of oxygenic photosynthesis long before the Great Oxidation Event, supporting an earlier age. But the Introduction (page unavailable) says published age estimates vary widely and that there is “no consensus,” so the paper does not support the claim that most studies favor a Paleoarchean or Mesoarchean age. (LLM, conf=0.84)

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Authors
Cardona, T., Sánchez‐Baracaldo, P., Rutherford, A. W., & Larkum, A. W.
Affiliations
  • Imperial College London (GB)
  • University of Bristol (GB)
  • University of Technology Sydney (AU)
Corresponding author
Cardona, Tanai
Venue
Geobiology
Publisher
Wiley
Published
2018-11-09
Volume
17
Issue
2
Pages
127-150
ISSN
  • 1472-4669 (ISSN-L)
  • 1472-4677
OpenAlex
W2900344826
Cited by
144
References
168
Citations by year
2026: 12 · 2025: 21 · 2024: 23 · 2023: 13 · 2022: 22 · 2021: 17 · 2020: 14 · 2019: 18 · 2018: 4
FWCI
4.69
Type
journal article
Language
en
Open access
Locations
  • Geobiology (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Bristol Research (University of Bristol) (publishedVersion, cc-by)
  • UTS ePRESS (University of Technology Sydney) (submittedVersion)
  • Spiral (Imperial College London) (submittedVersion, other-oa)
Funders
  • Imperial College London
  • Leverhulme Trust (RPG‐2017‐223)
  • Royal Society
  • Biotechnology and Biological Sciences Research Council (BB/K002627/1, BB/L011206/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Metalloenzymes and iron-sulfur proteins
Keywords
photosystem II, water oxidation, oxygenic photosynthesis, Archean, evolution of photosynthesis, cyanobacteria, anoxygenic photosynthetic bacteria, reaction center proteins, reactive oxygen species, eukaryotic origin
MeSH terms
Cyanobacteria, Bacterial Proteins, Bayes Theorem, Photosynthesis, Phylogeny, Evolution, Molecular, Photosystem II Protein Complex

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