Excitation Energy Transfer In The Light-Harvesting Antenna Of Photosynthetic Purple Bacteria: The Role Of The Long-Wavelength Absorbing Pigment B896

1988 ◽  
pp. 519-530 ◽  
Author(s):  
R. van Grondelle ◽  
H. Bergstrom ◽  
V. Sundstrom ◽  
R.J. van Dorssen ◽  
M. Vos ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Excitation Energy Transfer ◽  
Long Wavelength ◽  
Photosynthetic Purple Bacteria ◽  
Light Harvesting Antenna

Variety, the spice of life and essential for robustness in excitation energy transfer in light-harvesting complexes

2020 ◽  
Vol 221 ◽  
pp. 59-76 ◽  
Author(s):  
Sue Ann Oh ◽  
David F. Coker ◽  
David A. W. Hutchinson
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Recent Work ◽  
Energy Transport ◽  
Light Harvesting ◽  
Excitation Energy Transfer ◽  
Light Harvesting Complexes ◽  
Protein Scaffold ◽  
Site Variation

We review our recent work showing how important the site-to-site variation in coupling between chloroplasts in FMO and their protein scaffold environment is for energy transport in FMO and investigate the role of vibronic modes in this transport.

THEORY OF EXCITATION-ENERGY TRANSFER PROCESSES INVOLVING OPTICALLY FORBIDDEN EXCITON STATES IN ANTENNA SYSTEMS OF PHOTOSYNTHESIS

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3637-3640
Author(s):  
KOICHIRO MUKAI ◽  
SHUJI ABE ◽  
HITOSHI SUMI
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
High Efficiency ◽  
Purple Bacteria ◽  
Excitation Energy Transfer ◽  
Light Harvesting Complex ◽  
Transfer Processes ◽  
Photosynthetic Purple Bacteria ◽  
Antenna Systems

The rate of excitation-energy transfer (EET) within the light-harvesting complex (LH) and from LH to the reaction center (RC) of photosynthetic purple bacteria is calculated, based on a formula for EET between molecular aggregates. We show that optically forbidden exciton states participate in EET processes through mulitpole EET interactions with the help of disorder. In the antenna systems of photosynthesis, high efficiency of energy transfer is implemented by these EET processes involving optically forbidden exciton states.

scholarly journals Multi-step excitation energy transfer engineered in genetic fusions of natural and synthetic light-harvesting proteins

2017 ◽  
Vol 14 (127) ◽  
pp. 20160896 ◽  
Author(s):  
Joshua A. Mancini ◽  
Goutham Kodali ◽  
Jianbing Jiang ◽  
Kanumuri Ramesh Reddy ◽  
Jonathan S. Lindsey ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Light Harvesting ◽  
Excitation Energy Transfer ◽  
Α Subunit ◽  
Energy Capture ◽  
Synthetic Proteins ◽  
Synthetic Protein ◽  
Range Of Functions ◽  
Light Harvesting Antenna

Synthetic proteins designed and constructed from first principles with minimal reference to the sequence of any natural protein have proven robust and extraordinarily adaptable for engineering a range of functions. Here for the first time we describe the expression and genetic fusion of a natural photosynthetic light-harvesting subunit with a synthetic protein designed for light energy capture and multi-step transfer. We demonstrate excitation energy transfer from the bilin of the CpcA subunit (phycocyanin α subunit) of the cyanobacterial photosynthetic light-harvesting phycobilisome to synthetic four-helix-bundle proteins accommodating sites that specifically bind a variety of selected photoactive tetrapyrroles positioned to enhance energy transfer by relay. The examination of combinations of different bilin, chlorin and bacteriochlorin cofactors has led to identification of the preconditions for directing energy from the bilin light-harvesting antenna into synthetic protein–cofactor constructs that can be customized for light-activated chemistry in the cell.

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