Evidence map›Paper›PMID 17965007›Full record

ReviewPhilosophical transactions of the Royal Society of London. Series B, Biological sciences2008

FTIR detection of water reactions in the oxygen-evolving centre of photosystem II.

Takumi Noguchi

Abstract readReview
In one paragraph

Review in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Redox Isomerism in the SChemistry (Weinheim an der Bergstrasse, Germany) · 2021
    Article
  7. Untangling the sequence of events during the SProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  8. Water oxidation in photosystem II.Photosynthesis research · 2019
    Review
  9. Five-coordinate MnProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  10. Structural isomers of the SPhysiologia plantarum · 2019
    Article
  11. Substitution of the D1-AsnThe Journal of biological chemistry · 2018
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
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

1 author.

Takumi NoguchiInstitute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan. tnoguchi@ims.tsukuba.ac.jp

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flash-induced Fourier transform infrared (FTIR) difference spectroscopy has been used to study the water-oxidizing reactions in the oxygen-evolving centre of photosystem II. Reactions of water molecules were directly monitored by detecting the OH stretching bands of weakly H-bonded OH of water in the 3700-3500 cm(-1) region in FTIR difference spectra during S-state cycling. In the S1-->S2 transition, a band shift from 3588 to 3617 cm(-1) was observed, indicative of a weakened H-bond. Decoupling experiments using D2O:H2O (1:1) showed that this OH arose from a water molecule with an asymmetric H-bonding structure and this asymmetry became more significant upon S2 formation. In the S2-->S3, S3-->S0 and S0-->S1 transitions, negative bands were observed at 3634, 3621 and 3612 cm(-1), respectively, representing formation of a strong H-bond or a proton release reaction. In addition, using complex spectral features in the carboxylate stretching region (1600-1300 cm-(1)) as 'fingerprints' of individual S-state transitions, pH dependency of the transition efficiencies and the effect of dehydration were examined to obtain the information of proton release and water insertion steps in the S-state cycle. Low-pH inhibition of the S2-->S3, S3-->S0 and S0-->S1 transitions was consistent with a view that protons are released in the three transitions other than S1-->S2, while relatively high susceptibility to dehydration in the S2-->S3 and S3-->S0 transitions suggested the insertion of substrate water into the system during these transitions. Thus, a possible mechanism of water oxidation to explain the FTIR data is proposed.

Indexed as

Oxidation-ReductionOxygenPhotosystem II Protein ComplexSpectroscopy, Fourier Transform InfraredSynechococcusWaterOxygenPhotosystem II Protein ComplexWater

Identifiers

PMID17965007
PMCPMC2614091

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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.