scholarly journals Crystal Structure of a Multilayer Packed Major Light-Harvesting Complex: Implications for Grana Stacking in Higher Plants

2014 ◽  
Vol 7 (5) ◽  
pp. 916-919 ◽  
Author(s):  
Tao Wan ◽  
Mei Li ◽  
Xuelin Zhao ◽  
Jiping Zhang ◽  
Zhenfeng Liu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Light Harvesting ◽  
Higher Plants ◽  
Light Harvesting Complex

scholarly journals Multiscale QM/MM Molecular Dynamics Simulations of the Trimeric Major Light-Harvesting Complex II

2021 ◽  
Author(s):  
Sayan Maity ◽  
Vangelis Daskalakis ◽  
Marcus Elstner ◽  
Ulrich Kleinekathöfer
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Chlorophyll A ◽  
Density Functional ◽  
Light Harvesting ◽  
Higher Plants ◽  
Tight Binding ◽  
Spectral Densities ◽  
Light Harvesting Complex ◽  
Dynamics Simulations

Photosynthetic processes are driven by sunlight. Too little of it and the photosynthetic machinery cannot produce the reductive power to drive the anabolic pathways. Too much sunlight and the machinery can get damaged. In higher plants, the major Light Harvesting Complex (LHCII) efficiently absorbs the light energy, but can also dissipate it when in excess (quenching). In order to study the dynamics related to the quenching process but also the exciton dynamics in general, one needs to accurately determine the so-called spectral density which describes the coupling between the relevant pigment modes and the environmental degrees of freedom. To this end, Born–Oppenheimer molecular dynamics simulations in a quantum mechanics/molecular mechanics (QM/MM) fashion utilizing the density functional based tight binding (DFTB) method have been performed for the ground state dynamics. Subsequently, the time-dependent extension of the long-range-corrected DFTB scheme has been employed for the excited state calculations of the individual chlorophyll-a molecules in the LHCII complex. The analysis of this data resulted in spectral densities showing an astonishing agreement with the experimental counterpart in this rather large system. This consistency with an experimental observable also supports the accuracy, robustness, and reliability of the present multi-scale scheme. In addition, the resulting spectral densities and site energies were used to determine the exciton transfer rate within a special pigment pair consisting of a chlorophyll-a and a carotenoid molecule which is assumed to play a role in the balance between the light harvesting and quenching modes.

scholarly journals Xanthophylls in Light-Harvesting Complex II of Higher Plants:  Light Harvesting and Triplet Quenching†

Biochemistry ◽  
1997 ◽  
Vol 36 (40) ◽  
pp. 12208-12215 ◽  
Author(s):  
Erwin J. G. Peterman ◽  
Claudiu C. Gradinaru ◽  
Florentine Calkoen ◽  
Jeroen C. Borst ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Higher Plants ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

scholarly journals Chlorophyll a and carotenoid triplet states in light-harvesting complex II of higher plants

1995 ◽  
Vol 69 (6) ◽  
pp. 2670-2678 ◽  
Author(s):  
E.J. Peterman ◽  
F.M. Dukker ◽  
R. van Grondelle ◽  
H. van Amerongen
Keyword(s):  
Chlorophyll A ◽  
Light Harvesting ◽  
Higher Plants ◽  
Triplet States ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

scholarly journals Crystal structure of plant light-harvesting complex shows the active, energy-transmitting state

2009 ◽  
Vol 28 (3) ◽  
pp. 298-306 ◽  
Author(s):  
Tiago Barros ◽  
Antoine Royant ◽  
Jörg Standfuss ◽  
Andreas Dreuw ◽  
Werner Kühlbrandt
Keyword(s):  
Crystal Structure ◽  
Light Harvesting ◽  
Light Harvesting Complex

Ultrafast Spectroscopy of Trimeric Light-Harvesting Complex II from Higher Plants

1997 ◽  
Vol 101 (10) ◽  
pp. 1902-1909 ◽  
Author(s):  
J. P. Connelly ◽  
M. G. Müller ◽  
M. Hucke ◽  
G. Gatzen ◽  
C. W. Mullineaux ◽  
...  
Keyword(s):  
Ultrafast Spectroscopy ◽  
Light Harvesting ◽  
Higher Plants ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii
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