Evidence map›Paper›PMID 22167798›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Direct evidence of quantum transport in photosynthetic light-harvesting complexes.

Gitt Panitchayangkoon, Dmitri V Voronine, Darius Abramavicius, Justin R Caram, Nicholas H C Lewis, Shaul Mukamel, Gregory S Engel

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed.

  1. Article
  2. Article
  3. Protein chains in tight-binding framework.Journal of molecular modeling · 2025
    Article
  4. Quantum transport in protein chains.Scientific reports · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. Nuclear spin effects in biological processes.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Massively parallel classical logic via coherent dynamics of an ensemble of quantum systems with dispersion in size.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  14. Article
  15. Article
  16. Elucidation of near-resonance vibronic coherence lifetimes by nonadiabatic electronic-vibrational state character mixing.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  17. Article
  18. Review
  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

7 authors.

Gitt PanitchayangkoonDepartment of Chemistry and The James Franck Institute, The University of Chicago, Chicago, IL 60637, USA.
Dmitri V Voronine
Darius Abramavicius
Justin R Caram
Nicholas H C Lewis
Shaul Mukamel
Gregory S Engel

Funding

Multidimensional Femtosecond Correlation Spectroscopic Probes of BiomoleculesR01GM059230 · NIGMS · UNIVERSITY OF ROCHESTER · PI MUKAMEL, SHAUL · 2001 to 2013
$3.2M
NIGMS NIH HHS R01 GM059230
6 · The paper itself

Abstract

The photosynthetic light-harvesting apparatus moves energy from absorbed photons to the reaction center with remarkable quantum efficiency. Recently, long-lived quantum coherence has been proposed to influence efficiency and robustness of photosynthetic energy transfer in light-harvesting antennae. The quantum aspect of these dynamics has generated great interest both because of the possibility for efficient long-range energy transfer and because biology is typically considered to operate entirely in the classical regime. Yet, experiments to date show only that coherence persists long enough that it can influence dynamics, but they have not directly shown that coherence does influence energy transfer. Here, we provide experimental evidence that interaction between the bacteriochlorophyll chromophores and the protein environment surrounding them not only prolongs quantum coherence, but also spawns reversible, oscillatory energy transfer among excited states. Using two-dimensional electronic spectroscopy, we observe oscillatory excited-state populations demonstrating that quantum transport of energy occurs in biological systems. The observed population oscillation suggests that these light-harvesting antennae trade energy reversibly between the protein and the chromophores. Resolving design principles evident in this biological antenna could provide inspiration for new solar energy applications.

Indexed as

Models, MolecularChlorobiEnergy TransferLight-Harvesting Protein ComplexesModels, ChemicalPhotosynthesisQuantum TheorySpectrum AnalysisLight-Harvesting Protein Complexes

Identifiers

PMID22167798
PMCPMC3248508

What OpenQuestion holds

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Registered trials

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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.