ArticleProceedings of the National Academy of Sciences of the United States of America2023
Elucidating interprotein energy transfer dynamics within the antenna network from purple bacteria.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 26 citations in OpenAlex.
- 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 · 2026Article
- Consistent and Generalizable Effective Model Hamiltonian Framework for Studying Nonadiabatic Dynamics in the Condensed Phase.Journal of chemical theory and computation · 2025Review
- Light-Harvesting Nanomaterials Based on Dyes for Energy Transfer and Amplified Biosensing.Advanced materials (Deerfield Beach, Fla.) · 2025Review
- Photophysics of plasmonically enhanced self-assembled artificial light-harvesting nanoantennas.Communications chemistry · 2025Review
- Application of the Time-Domain Multichromophoric Fluorescence Resonant Energy Transfer Method in the NISE Programme.Journal of chemical theory and computation · 2025Article
- New insights shed light on the enigma of genetic diversity and species complexity.Science China. Life sciences · 2024Article
- Lighting the way: Compelling open questions in photosynthesis research.The Plant cell · 2024Article
- Prominent Role of Charge Transfer in the Spectral Tuning of Photosynthetic Light-Harvesting I Complex.ACS physical chemistry Au · 2024Article
- Coarse-Grained Approach to Simulate Signatures of Excitation Energy Transfer in Two-Dimensional Electronic Spectroscopy of Large Molecular Systems.Journal of chemical theory and computation · 2024Article
- Examining Sound, Light, and Vibrations as Tools to Manage Microbes and Support Holobionts, Ecosystems, and Technologies.Microorganisms · 2024Review
- Excitation energy transfer in proteoliposomes reconstituted with LH2 and RC-LH1 complexes from Rhodobacter sphaeroides.Bioscience reports · 2024Article
- Multistate Reaction Coordinate Model for Charge and Energy Transfer Dynamics in the Condensed Phase.Journal of chemical theory and computation · 2023Article
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Authors and funding
14 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In photosynthesis, absorbed light energy transfers through a network of antenna proteins with near-unity quantum efficiency to reach the reaction center, which initiates the downstream biochemical reactions. While the energy transfer dynamics within individual antenna proteins have been extensively studied over the past decades, the dynamics between the proteins are poorly understood due to the heterogeneous organization of the network. Previously reported timescales averaged over such heterogeneity, obscuring individual interprotein energy transfer steps. Here, we isolated and interrogated interprotein energy transfer by embedding two variants of the primary antenna protein from purple bacteria, light-harvesting complex 2 (LH2), together into a near-native membrane disc, known as a nanodisc. We integrated ultrafast transient absorption spectroscopy, quantum dynamics simulations, and cryogenic electron microscopy to determine interprotein energy transfer timescales. By varying the diameter of the nanodiscs, we replicated a range of distances between the proteins. The closest distance possible between neighboring LH2, which is the most common in native membranes, is 25 Å and resulted in a timescale of 5.7 ps. Larger distances of 28 to 31 Å resulted in timescales of 10 to 14 ps. Corresponding simulations showed that the fast energy transfer steps between closely spaced LH2 increase transport distances by ∼15%. Overall, our results introduce a framework for well-controlled studies of interprotein energy transfer dynamics and suggest that protein pairs serve as the primary pathway for the efficient transport of solar energy.
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