Rerouting excitation transfers in the Fenna-Matthews-Olson complex
- 12 September 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 88 (3), 032120
- https://doi.org/10.1103/physreve.88.032120
Abstract
We investigate, using the hierarchy method, the entanglement and the excitation transfer efficiency of the Fenna-Matthews-Olson (FMO) complex under two different local modifications: the suppression of transitions between particular sites and localized changes to the protein environment. We find that inhibiting the connection between site 5 and site 6, or completely disconnecting site 5 from the complex, leads to a dramatic enhancement of the entanglement between site 6 and site 7. Similarly, the transfer efficiency actually increases if site 5 is entirely disconnected from the complex. We further show that if sites 5 and 7 are conjointly removed, the efficiency falls. This suggests that while not contributing to the transport efficiency in a normal complex, site 5 may introduce a redundant transport route in case of damage to site 7. Our results suggest an overall robustness of the excitation-energy transfer in the FMO complex under mutations, local defects, and other abnormal situations.This publication has 47 references indexed in Scilit:
- Modelling of oscillations in two-dimensional echo-spectra of the Fenna–Matthews–Olson complexNew Journal of Physics, 2012
- An efficient method to calculate excitation energy transfer in light-harvesting systems: application to the Fenna–Matthews–Olson complexNew Journal of Physics, 2011
- Lessons from nature about solar light harvestingNature Chemistry, 2011
- Natural and artificial atoms for quantum computationReports on Progress in Physics, 2011
- From Atomistic Modeling to Excitation Transfer and Two-Dimensional Spectra of the FMO Light-Harvesting ComplexThe Journal of Physical Chemistry B, 2011
- Distribution of entanglement in light-harvesting complexes and their quantum efficiencyNew Journal of Physics, 2010
- Long-lived quantum coherence in photosynthetic complexes at physiological temperatureProceedings of the National Academy of Sciences of the United States of America, 2010
- Theoretical examination of quantum coherence in a photosynthetic system at physiological temperatureProceedings of the National Academy of Sciences of the United States of America, 2009
- How Proteins Trigger Excitation Energy Transfer in the FMO Complex of Green Sulfur BacteriaBiophysical Journal, 2006
- Non-Markovian evolution of the density operator in the presence of strong laser fieldsThe Journal of Chemical Physics, 1999