Evidence map›Paper›PMID 20165917›Full record

ReviewPhotosynthesis research2010

An overview on chlorophylls and quinones in the photosystem I-type reaction centers.

Shunsuke Ohashi, Tatsuya Iemura, Naoki Okada, Shingo Itoh, Hayato Furukawa, Masaaki Okuda, Mayumi Ohnishi-Kameyama, Takuro Ogawa, Hideaki Miyashita, Tadashi Watanabe and 4 more

Abstract readReview
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In one paragraph

Review in Photosynthesis research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

9 citing papers in PubMed, 42 citations in OpenAlex.

  1. Epimerization of chlorophyll a analogs: effects of the vinyl groups in the A-ring and B-ring of the chlorin macrocycle.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2026
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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

14 authors at 6 institutions in 1 country.

Shunsuke OhashiInstitute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Tatsuya Iemura
Naoki Okada
Shingo Itoh
Hayato Furukawa
Masaaki Okuda
Mayumi Ohnishi-Kameyama
Takuro Ogawa
Hideaki Miyashita
Tadashi Watanabe
Shigeru Itoh
Hirozo Oh-oka
Kazuhito Inoue
Masami Kobayashi
University of Tsukuba · JPKanagawa University · JPFood Research Institute · JPKyoto University · JPNagoya University · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Minor but key chlorophylls (Chls) and quinones in photosystem (PS) I-type reaction centers (RCs) are overviewed in regard to their molecular structures. In the PS I-type RCs, the prime-type chlorophylls, namely, bacteriochlorophyll (BChl) a' in green sulfur bacteria, BChl g' in heliobacteria, Chl a' in Chl a-type PS I, and Chl d' in Chl d-type PS I, function as the special pairs, either as homodimers, (BChl a')(2) and (BChl g')(2) in anoxygenic organisms, or heterodimers, Chl a/a' and Chl d/d' in oxygenic photosynthesis. Conversions of BChl g to Chl a and Chl a to Chl d take place spontaneously under mild condition in vitro. The primary electron acceptors, A (0), are Chl a-derivatives even in anoxygenic PS I-type RCs. The secondary electron acceptors are naphthoquinones, whereas the side chains may have been modified after the birth of cyanobacteria, leading to succession from menaquinone to phylloquinone in oxygenic PS I.

Indexed as

BacteriaChlorophyllDimerizationPhotosystem I Protein ComplexQuinonesChlorophyllPhotosystem I Protein ComplexQuinones

Identifiers

PMID20165917
OpenAlexW2062707851

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.