Evidence map›Paper›PMID 34274981›Full record

ArticleJournal of molecular evolution2021

Evolution of Superoxide Dismutases and Catalases in Cyanobacteria: Occurrence of the Antioxidant Enzyme Genes before the Rise of Atmospheric Oxygen.

Mariko Harada, Ayumi Akiyama, Ryutaro Furukawa, Shin-Ichi Yokobori, Eiichi Tajika, Akihiko Yamagishi

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Article in Journal of molecular evolution, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 22 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Mariko Harada *Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8572, Japan. harada.mariko.gn@u.tsukuba.ac.jp.ORCID 0000-0003-2289-2196
Ayumi Akiyama *Department of Earth & Planetary Science, The University of Tokyo, Bunkyo, 133-0033, Japan.
Ryutaro FurukawaFaculty of Human Sciences, Waseda University, Tokorozawa, 359-1192, Japan.
Shin-Ichi YokoboriDepartment of Applied Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, 192-0392, Japan.
Eiichi TajikaDepartment of Earth & Planetary Science, The University of Tokyo, Bunkyo, 133-0033, Japan.
Akihiko YamagishiDepartment of Applied Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, 192-0392, Japan.
The University of Tokyo · JPTokyo University of Pharmacy and Life Sciences · JPUniversity of Tsukuba · JPWaseda University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Knowledge on the evolution of antioxidant systems in cyanobacteria is crucial for elucidating the cause and consequence of the rise of atmospheric oxygen in the Earth's history. In this study, to elucidate the origin and evolution of cyanobacterial antioxidant enzymes, we analyzed the occurrence of genes encoding four types of superoxide dismutases and three types of catalases in 85 complete cyanobacterial genomes, followed by phylogenetic analyses. We found that Fe superoxide dismutase (FeSOD), Mn superoxide dismutase (MnSOD), and Mn catalase (MnCat) are widely distributed among modern cyanobacteria, whereas CuZn superoxide dismutase (CuZnSOD), bifunctional catalase (KatG), and monofunctional catalase (KatE) are less common. Ni superoxide dismutase (NiSOD) is distributed among marine Prochlorococcus and Synechococcus species. Phylogenetic analyses suggested that bacterial MnSOD evolved from cambialistic Fe/MnSOD before the diversification of major bacterial lineages. The analyses suggested that FeSOD evolved from MnSOD before the origin of cyanobacteria. MnCat also evolved in the early stages of bacterial evolution, predating the emergence of cyanobacteria. KatG, KatE, and NiSOD appeared 2.3-2.5 billion years ago. Thus, almost all cyanobacterial antioxidant enzymes emerged before or during the rise of atmospheric oxygen. The loss and appearance of these enzymes in marine cyanobacteria may be also related to the change in the metal concentration induced by the increased oxygen concentration in the ocean.

Indexed as

AntioxidantsCyanobacteriaCatalaseOxygenPhylogenySuperoxide DismutaseAntioxidantsCatalaseOxygenSuperoxide DismutaseCatalaseCyanobacteriaPhylogenetic analysisSuperoxide dismutase

Identifiers

PMID34274981
OpenAlexW3183582757

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.