Evidence map›Paper›PMID 23650366›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Optimal fold symmetry of LH2 rings on a photosynthetic membrane.

Liam Cleary, Hang Chen, Chern Chuang, Robert J Silbey, Jianshu Cao

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

19 citing papers in PubMed, 65 citations in OpenAlex.

  1. Article
  2. Trade-offs between light absorption and energy transfer in a marine light-harvesting complex 2.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Elucidating interprotein energy transfer dynamics within the antenna network from purple bacteria.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  8. Article
  9. Optical Properties of Concentric Nanorings of Quantum Emitters.Nanomaterials (Basel, Switzerland) · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Cavity-Modified Exciton Dynamics in Photosynthetic Units.The journal of physical chemistry letters · 2019
    Article
  15. Simple Quantum Dynamics with Thermalization.The journal of physical chemistry. A · 2018
    Article
  16. Review
  17. Article
  18. Article
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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

5 authors at 1 institution in 1 country.

Liam ClearyDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Hang Chen
Chern Chuang
Robert J Silbey
Jianshu Cao
Massachusetts Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An intriguing observation of photosynthetic light-harvesting systems is the N-fold symmetry of light-harvesting complex 2 (LH2) of purple bacteria. We calculate the optimal rotational configuration of N-fold rings on a hexagonal lattice and establish two related mechanisms for the promotion of maximum excitation energy transfer (EET). (i) For certain fold numbers, there exist optimal basis cells with rotational symmetry, extendable to the entire lattice for the global optimization of the EET network. (ii) The type of basis cell can reduce or remove the frustration of EET rates across the photosynthetic network. We find that the existence of a basis cell and its type are directly related to the number of matching points S between the fold symmetry and the hexagonal lattice. The two complementary mechanisms provide selection criteria for the fold number and identify groups of consecutive numbers. Remarkably, one such group consists of the naturally occurring 8-, 9-, and 10-fold rings. By considering the inter-ring distance and EET rate, we demonstrate that this group can achieve minimal rotational sensitivity in addition to an optimal packing density, achieving robust and efficient EET. This corroborates our findings i and ii and, through their direct relation to S, suggests the design principle of matching the internal symmetry with the lattice order.

Indexed as

Protein FoldingBacterial ProteinsCell MembraneLight-Harvesting Protein ComplexesRhodopseudomonasBacterial ProteinsLight-Harvesting Protein Complexes

Identifiers

PMID23650366
PMCPMC3666702
OpenAlexW2084288916

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.