Evidence map›Paper›PMID 41606388›Full record

ArticlePhotosynthesis research2026

Light harvesting mechanism of the multi-pigment reaction center with three chlorophyll species adapted to both visible and far-red light.

Wataru Shimooka, Hirotaka Kitoh-Nishioka, Shigeru Itoh, Akihiro Kimura

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

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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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

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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

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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

4 authors.

Wataru ShimookaDepartment of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.
Hirotaka Kitoh-NishiokaDepartment of Energy and Materials, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan.ORCID http://orcid.org/0000-0002-6210-3641
Shigeru ItohDepartment of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.ORCID http://orcid.org/0000-0002-3065-5812
Akihiro KimuraDepartment of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan. kimura.akihiro.x8@f.mail.nagoya-u.ac.jp.ORCID http://orcid.org/0000-0002-1014-7300

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We studied functions of a unique type-I photosynthetic reaction center complex containing three different types of chlorophyll species: bacteriochlorophyll a (BChl a), Zn-bacteriochlorophyll aʹ (Zn-BChl aʹ), and chlorophyll a (Chl a), adapted to both visible and far-red light environments, of an Acidobacterium Chloracidobacterium thermophilum reaction center (CabRC). The RC contains altogether 16 BChl a, 10 Chl a, the two molecules of Zn-BChl aʹ that form a special pair, and two lycopenes. We analyzed the excitation energy transfer (EET) dynamics on CabRC by calculating exciton Hamiltonians of all the pigments based on the structural information by using the modified Redfield theory. EET rates were predicted to be slower between Chls a and BChls a, compared to that between Chls a or between BChls a. The slow EET between exciton bands of 10 Chls a and 16 BChls a, thus, limits the overall efficiency of EET, although it is significantly enhanced by the intramolecular vibrational modes in the exciton-phonon interaction. The usage of multiple pigment species, therefore, allows the efficient usage of energy of a wide range of visible to far-red light in CabRC, which provides the highly optimized arrangements of heterogeneous pigments.

Indexed as

AcidobacteriaChlorophyllLight-Harvesting Protein ComplexesPhotosynthetic Reaction Center Complex ProteinsBacteriochlorophyll AChlorophyll AEnergy TransferLightRed LightBacteriochlorophyll AChlorophyllChlorophyll ALight-Harvesting Protein ComplexesPhotosynthetic Reaction Center Complex ProteinsBacteriochlorophyll aChloracidobacterium thermophilumChlorophyll aExcitation energy transferReaction centerUltrafast light harvestingZn-bacteriochlorophyll a ʹ

Identifiers

PMID41606388
PMCPMC12852291

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