Identification of a Ubiquinone-Ubiquinol Quinhydrone Complex in Bacterial Photosynthetic Membranes and Isolated Reaction Centers by Time-Resolved Infrared Spectroscopy.

Alberto Mezzetti, Jean-François Paul, Winfried Leibl

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Article in International journal of molecular sciences, 2023. 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

0.8field-weighted citation impact, top 28% of its field

1 · What the graph read from it

What it found

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2 · The registry

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0 citing papers in PubMed, 5 citations in OpenAlex.

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5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Alberto MezzettiLaboratoire de Réactivité de Surface, LRS, Sorbonne Université, CNRS, 4 Place Jussieu, 75005 Paris, France.

Jean-François PaulUnité de Catalyse et Chimie du Solide, Centrale Lille Université d'Artois, Université de Lille, UMR CNRS 8181-UCCS, 59000 Lille, France.

Winfried LeiblInstitute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198 Gif sur Yvette, France.ORCID 0000-0002-2313-6643

Centre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ubiquinone redox chemistry is of fundamental importance in biochemistry, notably in bioenergetics. The bi-electronic reduction of ubiquinone to ubiquinol has been widely studied, including by Fourier transform infrared (FTIR) difference spectroscopy, in several systems. In this paper, we have recorded static and time-resolved FTIR difference spectra reflecting light-induced ubiquinone reduction to ubiquinol in bacterial photosynthetic membranes and in detergent-isolated photosynthetic bacterial reaction centers. We found compelling evidence that in both systems under strong light illumination-and also in detergent-isolated reaction centers after two saturating flashes-a ubiquinone-ubiquinol charge-transfer quinhydrone complex, characterized by a characteristic band at ~1565 cm

Indexed as

Photosynthetic Reaction Center Complex ProteinsRhodobacter sphaeroidesDetergentsElectron TransportHydroquinonesOxidation-ReductionQuinonesSpectrophotometry, InfraredSpectroscopy, Fourier Transform InfraredUbiquinoneDetergentsHydroquinonesPhotosynthetic Reaction Center Complex ProteinsquinhydroneQuinonesubiquinolUbiquinonebacterial reaction center (RC)charge-transfer complexchromatophoresFourier Transform Infrared (FTIR) difference spectroscopyquinhydronerapid-scan FTIRRhodobacter (Rb.) sphaeroidesubiquinolubiquinone

Identifiers

PMID36982307

DOI10.3390/ijms24065233

PMCPMC10049466

OpenAlexW4323664605

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LicenceCC BY

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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.