The DOI matches its Crossref record.
Initial electron donor and acceptor in isolated Photosystem II reaction centers identified with femtosecond mid-IR spectroscopy
Open accessAbstract
Despite the apparent similarity between the plant Photosystem II reaction center (RC) and its purple bacterial counterpart, we show in this work that the mechanism of charge separation is very different for the two photosynthetic RCs. By using femtosecond visible-pump–mid-infrared probe spectroscopy in the region of the chlorophyll ester and keto modes, between 1,775 and 1,585 cm –1 , with 150-fs time resolution, we show that the reduction of pheophytin occurs on a 0.6- to 0.8-ps time scale, whereas P + , the precursor state for water oxidation, is formed after ≈6 ps. We conclude therefore that in the Photosystem II RC the primary charge separation occurs between the “accessory chlorophyll” Chl D1 and the pheophytin on the so-called active branch.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Ultrafast transient absorption spectroscopy: principles and application to photosynthetic systems
Berera, R., van Grondelle, R., & Kennis, J. T. M. (2009) · Photosynthesis Research · doi:10.1007/s11120-009-9454-y · Cited by 894
Self-citationQuantum design of photosynthesis for bio-inspired solar-energy conversion
Romero, E., Novoderezhkin, V. I., & van Grondelle, R. (2017) · Nature · doi:10.1038/nature22012 · Cited by 436
Charge separation in Photosystem II: A comparative and evolutionary overview
Cardona, T., Sedoud, A., Cox, N., & Rutherford, A. W. (2012) · Biochimica et Biophysica Acta (BBA) - Bioenergetics · doi:10.1016/j.bbabio.2011.07.012 · Cited by 364
Light-harvesting in photosystem I
Croce, R., & van Amerongen, H. (2013) · Photosynthesis Research · doi:10.1007/s11120-013-9838-x · Cited by 351
Holzwarth, A. R., Müller, M. G., Reus, M., Nowaczyk, M., Sander, J., & Rögner, M. (2006) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0505371103 · Cited by 347
Metadata
- Authors
- Groot, M. L., Pawlowicz, N. P., van Wilderen, L. J. G. W., Breton, J., van Stokkum, I. H. M., & van Grondelle, R.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2005-08-31
- Volume
- 102
- Issue
- 37
- Pages
- 13087-13092
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2126285505
- Cited by
- 211
- References
- 0
- FWCI
- 5.99
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Initial electron donor and acceptor in isolated Photosystem II reaction centers identified with femtosecond mid-IR spectroscopy. https://app.cochat.ai/papers/10.1073/pnas.0503483102
- The paper
- Groot, M. L., Pawlowicz, N. P., van Wilderen, L. J. G. W., Breton, J., van Stokkum, I. H. M., & van Grondelle, R. (2005). Initial electron donor and acceptor in isolated Photosystem II reaction centers identified with femtosecond mid-IR spectroscopy. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0503483102
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
