Evidence map›Paper›PMID 31594847›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2019

A novel chlorophyll protein complex in the repair cycle of photosystem II.

Daniel A Weisz, Virginia M Johnson, Dariusz M Niedzwiedzki, Min Kyung Shinn, Haijun Liu, Clécio F Klitzke, Michael L Gross, Robert E Blankenship, Timothy M Lohman, Himadri B Pakrasi

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Mapping the architecture of protein complexes inProceedings of the National Academy of Sciences of the United States of America · 2026
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  14. Proteomic analysis response of rice (Frontiers in plant science · 2022
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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

10 authors at 1 institution in 1 country.

Daniel A WeiszDepartment of Biology, Washington University in St. Louis, St. Louis, MO 63130.
Virginia M JohnsonDepartment of Biology, Washington University in St. Louis, St. Louis, MO 63130.
Dariusz M NiedzwiedzkiCenter for Solar Energy & Energy Storage, Department of Energy, Environmental, & Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130.ORCID 0000-0002-1976-9296
Min Kyung ShinnDepartment of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110.
Haijun LiuDepartment of Biology, Washington University in St. Louis, St. Louis, MO 63130.ORCID 0000-0003-0537-0302
Clécio F KlitzkeDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130.
Michael L GrossDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130.ORCID 0000-0003-1159-4636
Robert E BlankenshipDepartment of Biology, Washington University in St. Louis, St. Louis, MO 63130.
Timothy M LohmanDepartment of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110.
Himadri B PakrasiDepartment of Biology, Washington University in St. Louis, St. Louis, MO 63130; Pakrasi@wustl.edu.ORCID 0000-0001-8240-2123
Washington University in St. Louis · US

Funding

TrainingP41GM103422 · NIGMS · WASHINGTON UNIVERSITY · PI YARASHESKI, KEVIN E · 2012 to 2019
$12.0M
SSB PROTEIN/DNA INTERACTIONSR01GM030498 · NIGMS · WASHINGTON UNIVERSITY · PI LOHMAN, TIMOTHY M · 1985 to 2019
$7.4M
21ST CENTURY IMAGING SCIENCES: GRADUATE STUDENT TRAININGT32EB014855 · NIBIB · WASHINGTON UNIVERSITY · PI JOSEPH P CULVER, JOSEPH A O'SULLIVAN · 2012 to 2026
$3.1M
NIBIB NIH HHS T32 EB014855NIGMS NIH HHS P41 GM103422NIGMS NIH HHS R01 GM030498
6 · The paper itself

Abstract

In oxygenic photosynthetic organisms, photosystem II (PSII) is a unique membrane protein complex that catalyzes light-driven oxidation of water. PSII undergoes frequent damage due to its demanding photochemistry. It must undergo a repair and reassembly process following photodamage, many facets of which remain unknown. We have discovered a PSII subcomplex that lacks 5 key PSII core reaction center polypeptides: D1, D2, PsbE, PsbF, and PsbI. This pigment-protein complex does contain the PSII core antenna proteins CP47 and CP43, as well as most of their associated low molecular mass subunits, and the assembly factor Psb27. Immunoblotting, mass spectrometry, and ultrafast spectroscopic results support the absence of a functional reaction center in this complex, which we call the "no reaction center" complex (NRC). Analytical ultracentrifugation and clear native PAGE analysis show that NRC is a stable pigment-protein complex and not a mixture of free CP47 and CP43 proteins. NRC appears in higher abundance in cells exposed to high light and impaired protein synthesis, and genetic deletion of PsbO on the PSII luminal side results in an increased NRC population, indicative that NRC forms in response to photodamage as part of the PSII repair process. Our finding challenges the current model of the PSII repair cycle and implies an alternative PSII repair strategy. Formation of this complex may maximize PSII repair economy by preserving intact PSII core antennas in a single complex available for PSII reassembly, minimizing the risk of randomly diluting multiple recycling components in the thylakoid membrane following a photodamage event.

Indexed as

Cells, CulturedChlorophyllPhotochemistryPhotosynthesisPhotosystem II Protein ComplexThylakoidsChlorophyllPhotosystem II Protein Complexmass spectrometryphotosynthesisprotein turnoverrepair cycleultrafast spectroscopy

Identifiers

PMID31594847
PMCPMC6815111
OpenAlexW2979335027

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.