An early diverging SQR enzyme in Antarctic

Louise Hambücken, Edi Sudianto, Elie Verleyen, Jimmy H Saw, Denis Baurain, Luc Cornet

Abstract read

In one paragraph

Article in Microbiology spectrum, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Louise HambückenInBioS-PhytoSYSTEMS, Eukaryotic Phylogenomics, University of Liège, Liège, Belgium.

Edi SudiantoInBioS-PhytoSYSTEMS, Eukaryotic Phylogenomics, University of Liège, Liège, Belgium.ORCID 0000-0002-0771-0385

Elie VerleyenProtistology and Aquatic Ecology, Ghent University, Ghent, Belgium.

Jimmy H SawDepartment of Biological Sciences, The George Washington University, Washington, DC, USA.

Denis BaurainInBioS-PhytoSYSTEMS, Eukaryotic Phylogenomics, University of Liège, Liège, Belgium.

Luc CornetInBioS-PhytoSYSTEMS, Eukaryotic Phylogenomics, University of Liège, Liège, Belgium.ORCID 0000-0002-3420-4488

Funding

FRS-FNRSFRS-FNRS 2.5020.11FRS-FNRS FRIAFRS-FNRS PDR T.0018.24

6 · The paper itself

Abstract

Oxygenic photosynthesis, which converts solar energy into carbohydrates via a linear electron transport chain and two photosystems (PSII and PSI), first appeared in cyanobacteria approximately 3.3 Ga and drove the Great Oxidation Event around 2.4 Ga. During this period, euxinic conditions-characterized by sulfidic, anoxic oceans-posed a metabolic challenge to cyanobacteria, as sulfide inhibits PSII, the reaction center responsible for water splitting. Here, we report the presence of a sulfide-quinone reductase (SQR) enzyme in Antarctic representatives of

Indexed as

Bacterial ProteinsCyanobacteriaQuinone ReductasesSulfidesThylakoidsAntarctic RegionsPhotosynthesisPhotosystem II Protein ComplexPhylogenyBacterial ProteinsPhotosystem II Protein ComplexQuinone Reductasessulfide quinone reductaseSulfidescyanobacteriaevolutionGloeobacterphotosynthesissulfide quinone reductase

Identifiers

PMID42126253

DOI10.1128/spectrum.00423-26

PMCPMC13228078

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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.