Evidence map›Paper›PMID 40216733›Full record

ArticleNature communications2025

Structural basis for the prolonged photocycle of sensory rhodopsin II revealed by serial synchrotron crystallography.

Robert Bosman, Giorgia Ortolani, Swagatha Ghosh, Daniel James, Per Norder, Greger Hammarin, Tinna Björg Úlfarsdóttir, Lucija Ostojić, Tobias Weinert, Florian Dworkowski and 4 more

Abstract read
In one paragraph

Article in Nature communications, 2025. 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

14 authors.

Robert Bosman *Department of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.
Giorgia Ortolani *Department of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.ORCID http://orcid.org/0000-0001-6373-9919
Swagatha GhoshDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.
Daniel JamesLaboratory of Biomolecular Research, Center for Life Sciences, Paul Scherrer Institut, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.ORCID http://orcid.org/0000-0002-8348-6661
Per NorderDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.ORCID http://orcid.org/0000-0002-7193-640X
Greger HammarinDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.ORCID http://orcid.org/0000-0001-5037-6039
Tinna Björg ÚlfarsdóttirDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.
Lucija OstojićDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.
Tobias WeinertLaboratory of Biomolecular Research, Center for Life Sciences, Paul Scherrer Institut, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.ORCID http://orcid.org/0000-0002-0339-3722
Florian DworkowskiLaboratory of Femtochemistry, Center for Photon Science, Paul Scherrer Institut, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.ORCID http://orcid.org/0000-0001-5004-8684
Takashi TomizakiLaboratory of Macromolecules and Bioimaging, Center for Photon Science, Paul Scherrer Institut, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.ORCID http://orcid.org/0000-0003-0011-0990
Jörg StandfussLaboratory of Biomolecular Research, Center for Life Sciences, Paul Scherrer Institut, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.ORCID http://orcid.org/0000-0001-8825-386X
Gisela BrändénDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden.ORCID http://orcid.org/0000-0001-5615-7187
Richard NeutzeDepartment of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden. richard.neutze@gu.se.ORCID http://orcid.org/0000-0003-0986-6153

Funding

EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020) ERC 789030EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020) X-ProbeVetenskapsrådet (Swedish Research Council) 2015-00560Vetenskapsrådet (Swedish Research Council) 2017-06734
6 · The paper itself

Abstract

Microbial rhodopsins form a diverse family of light-sensitive seven-transmembrane helix retinal proteins that function as active proton or ion pumps, passive light-gated ion channels, and photosensors. To understand how light-sensing in archaea is initiated by sensory rhodopsins, we perform serial synchrotron X-ray crystallography (SSX) studies of light induced conformational changes in sensory rhodopsin II (NpSRII) from the archaea Natronomonas pharaonis, both collecting time-resolved SSX data and collecting SSX data during continuous illumination. Comparing light-induced electron density changes in NpSRII with those reported for bacteriorhodopsin (bR) reveals several common light-induced structural perturbations. Unlike bR, however, helix G of NpSRII does not unwind near the conserved lysine residue to which retinal is covalently bound and therefore transient water molecule binding sites do not arise immediately to the cytoplasmic side of retinal. These structural differences prolong the duration of the NpSRII photocycle relative to bR, allowing time for the light-initiated sensory signal to be amplified.

Indexed as

Archaeal ProteinsHalobacteriaceaeSensory RhodopsinsBacteriorhodopsinsBinding SitesCrystallography, X-RayHalorhodopsinsLightModels, MolecularProtein ConformationRetinaldehydeSynchrotronsArchaeal ProteinsBacteriorhodopsinsHalorhodopsinsRetinaldehydesensory rhodopsin II protein, archaealSensory Rhodopsins

Identifiers

PMID40216733
PMCPMC11992208

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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.