scholarly journals Unraveling the Excited-State Dynamics and Light-Harvesting Functions of Xanthophylls in Light-Harvesting Complex II Using Femtosecond Stimulated Raman Spectroscopy

2020 ◽  
Vol 142 (41) ◽  
pp. 17346-17355 ◽  
Author(s):  
Juan M. Artes Vivancos ◽  
Ivo H. M. van Stokkum ◽  
Francesco Saccon ◽  
Yusaku Hontani ◽  
Miroslav Kloz ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Excited State Dynamics ◽  
Light Harvesting Complex Ii ◽  
Stimulated Raman

Protein Dynamics Tunes Excited State Positions in Light-Harvesting Complex II

2015 ◽  
Vol 119 (10) ◽  
pp. 3920-3930 ◽  
Author(s):  
Kamarniso Vrandecic ◽  
Margus Rätsep ◽  
Laura Wilk ◽  
Leonid Rusevich ◽  
Maksym Golub ◽  
...  
Keyword(s):  
Excited State ◽  
Protein Dynamics ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Effects of excited state mixing on transient absorption spectra in dimers: Application to photosynthetic light-harvesting complex II

1999 ◽  
Vol 111 (7) ◽  
pp. 3121-3132 ◽  
Author(s):  
Leonas Valkunas ◽  
Vilmantas Cervinskas ◽  
Gediminas Trinkunas ◽  
Marc G. Müller ◽  
Alfred R. Holzwarth
Keyword(s):  
Excited State ◽  
Absorption Spectra ◽  
Transient Absorption ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Transient Absorption Spectra ◽  
Light Harvesting Complex Ii ◽  
State Mixing

Characterization of fluorescent chlorophyll charge-transfer states as intermediates in the excited state quenching of light-harvesting complex II

2020 ◽  
Vol 144 (2) ◽  
pp. 171-193 ◽  
Author(s):  
Evgeny E. Ostroumov ◽  
Jan P. Götze ◽  
Michael Reus ◽  
Petar H. Lambrev ◽  
Alfred R. Holzwarth
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii ◽  
Excited State Quenching

scholarly journals Two-Dimensional Spectroscopy of Chlorophyll a Excited-State Equilibration in Light-Harvesting Complex II

2016 ◽  
Vol 8 (1) ◽  
pp. 257-263 ◽  
Author(s):  
Parveen Akhtar ◽  
Cheng Zhang ◽  
Thanh Nhut Do ◽  
Győző Garab ◽  
Petar H. Lambrev ◽  
...  
Keyword(s):  
Excited State ◽  
Chlorophyll A ◽  
Light Harvesting ◽  
Two Dimensional ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

scholarly journals Femtosecond stimulated Raman spectroscopy of the dark S1 excited state of carotenoid in photosynthetic light harvesting complex.

2012 ◽  
Vol 59 (1) ◽  
Author(s):  
Masayuki Yoshizawa ◽  
Ryosuke Nakamura ◽  
Orihiro Yoshimatsu ◽  
Kenta Abe ◽  
Shunsuke Sakai ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
High Frequency ◽  
Internal Conversion ◽  
Light Harvesting ◽  
Vibrational Mode ◽  
Vibrational Dynamics ◽  
Light Harvesting Complex ◽  
High Frequency Shift ◽  
Stimulated Raman

Vibrational dynamics of the excited state in the light-harvesting complex (LH1) have been investigated by femtosecond stimulated Raman spectroscopy (FSRS). The native and reconstituted LH1 complexes have same dynamics. The ν(1) (C=C stretching) vibrational mode of spirilloxanthin in LH1 shows ultrafast high-frequency shift in the S(1) excited state with a time constant of 0.3 ps. It is assigned to the vibrational relaxation of the S(1) state following the internal conversion from the photoexcited S(2) state.

Macroorganisation and flexibility of thylakoid membranes

2019 ◽  
Vol 476 (20) ◽  
pp. 2981-3018 ◽  
Author(s):  
Petar H. Lambrev ◽  
Parveen Akhtar
Keyword(s):  
Light Harvesting ◽  
Current Knowledge ◽  
Three Dimensional ◽  
Photosynthetic Apparatus ◽  
Dynamic Responses ◽  
State Transitions ◽  
Photochemical Quenching ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

Abstract The light reactions of photosynthesis are hosted and regulated by the chloroplast thylakoid membrane (TM) — the central structural component of the photosynthetic apparatus of plants and algae. The two-dimensional and three-dimensional arrangement of the lipid–protein assemblies, aka macroorganisation, and its dynamic responses to the fluctuating physiological environment, aka flexibility, are the subject of this review. An emphasis is given on the information obtainable by spectroscopic approaches, especially circular dichroism (CD). We briefly summarise the current knowledge of the composition and three-dimensional architecture of the granal TMs in plants and the supramolecular organisation of Photosystem II and light-harvesting complex II therein. We next acquaint the non-specialist reader with the fundamentals of CD spectroscopy, recent advances such as anisotropic CD, and applications for studying the structure and macroorganisation of photosynthetic complexes and membranes. Special attention is given to the structural and functional flexibility of light-harvesting complex II in vitro as revealed by CD and fluorescence spectroscopy. We give an account of the dynamic changes in membrane macroorganisation associated with the light-adaptation of the photosynthetic apparatus and the regulation of the excitation energy flow by state transitions and non-photochemical quenching.

scholarly journals The Three Isoforms of the Light-harvesting Complex II

2004 ◽  
Vol 279 (35) ◽  
pp. 36884-36891 ◽  
Author(s):  
Joerg Standfuss ◽  
Werner Kühlbrandt
Keyword(s):  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii
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