Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex

Erling Thyrhaug; Karel Zidek; Jakub Dostál; David Bína; Donatas Zigmantas

doi:10.1021/acs.jpclett.6b00534

Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex

Erling Thyrhaug, Karel Zidek, Jakub Dostál, David Bína, Donatas Zigmantas

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Abstract

The Fenna-Matthews-Olson (FMO) photosynthetic complex found in green sulfur bacteria has over the last decades been one of the favorite "model" systems for biological energy transfer. However, even after 40 years of studies, quantitative knowledge about its energy-transfer properties is limited. Here, two-dimensional electronic spectroscopy with full polarization control is used to provide an accurate description of the electronic structure and population dynamics in the complex. The sensitivity of the technique has further allowed us to spectroscopically identify the eighth bacterio-chlorophyll molecule recently discovered in the crystal structure. The time evolution of the spectral structure, covering time scales from tens of femtoseconds up to a nanosecond, reflects the energy flow in FMO and enables us to extract an unambiguous energy-transfer scheme.

Original language	English
Pages (from-to)	1653-1660
Number of pages	8
Journal	The Journal of Physical Chemistry Letters
Volume	7
Issue number	9
DOIs	https://doi.org/10.1021/acs.jpclett.6b00534
Publication status	Published - 2016 May 5

Subject classification (UKÄ)

Physical Chemistry (including Surface- and Colloid Chemistry)
Biological Sciences
Physical Sciences

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Thyrhaug et al 2016 JPCL fullAccepted author manuscript, 2.6 MB

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title = "Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex",

abstract = "The Fenna-Matthews-Olson (FMO) photosynthetic complex found in green sulfur bacteria has over the last decades been one of the favorite {"}model{"} systems for biological energy transfer. However, even after 40 years of studies, quantitative knowledge about its energy-transfer properties is limited. Here, two-dimensional electronic spectroscopy with full polarization control is used to provide an accurate description of the electronic structure and population dynamics in the complex. The sensitivity of the technique has further allowed us to spectroscopically identify the eighth bacterio-chlorophyll molecule recently discovered in the crystal structure. The time evolution of the spectral structure, covering time scales from tens of femtoseconds up to a nanosecond, reflects the energy flow in FMO and enables us to extract an unambiguous energy-transfer scheme.",

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T1 - Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex

AU - Thyrhaug, Erling

AU - Zidek, Karel

AU - Dostál, Jakub

AU - Bína, David

AU - Zigmantas, Donatas

PY - 2016/5/5

Y1 - 2016/5/5

N2 - The Fenna-Matthews-Olson (FMO) photosynthetic complex found in green sulfur bacteria has over the last decades been one of the favorite "model" systems for biological energy transfer. However, even after 40 years of studies, quantitative knowledge about its energy-transfer properties is limited. Here, two-dimensional electronic spectroscopy with full polarization control is used to provide an accurate description of the electronic structure and population dynamics in the complex. The sensitivity of the technique has further allowed us to spectroscopically identify the eighth bacterio-chlorophyll molecule recently discovered in the crystal structure. The time evolution of the spectral structure, covering time scales from tens of femtoseconds up to a nanosecond, reflects the energy flow in FMO and enables us to extract an unambiguous energy-transfer scheme.

AB - The Fenna-Matthews-Olson (FMO) photosynthetic complex found in green sulfur bacteria has over the last decades been one of the favorite "model" systems for biological energy transfer. However, even after 40 years of studies, quantitative knowledge about its energy-transfer properties is limited. Here, two-dimensional electronic spectroscopy with full polarization control is used to provide an accurate description of the electronic structure and population dynamics in the complex. The sensitivity of the technique has further allowed us to spectroscopically identify the eighth bacterio-chlorophyll molecule recently discovered in the crystal structure. The time evolution of the spectral structure, covering time scales from tens of femtoseconds up to a nanosecond, reflects the energy flow in FMO and enables us to extract an unambiguous energy-transfer scheme.

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JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

IS - 9

ER -

Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex

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