Fluorescence enhancement of light-harvesting complex 2 from purple bacteria coupled to spherical gold nanoparticles

2011 ◽  
Vol 99 (17) ◽  
pp. 173701 ◽  
Author(s):  
Ł. Bujak ◽  
N. Czechowski ◽  
D. Piatkowski ◽  
R. Litvin ◽  
S. Mackowski ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Enhancement ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Light Harvesting Complex ◽  
Spherical Gold Nanoparticles

B800–B850 coherence correlates with energy transfer rates in the LH2 complex of photosynthetic purple bacteria

2015 ◽  
Vol 17 (46) ◽  
pp. 30805-30816 ◽  
Author(s):  
Cathal Smyth ◽  
Daniel G. Oblinsky ◽  
Gregory D. Scholes
Keyword(s):  
Energy Transfer ◽  
Quantum Information ◽  
Information Science ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Quantum Information Science ◽  
Light Harvesting Complex ◽  
Transfer Rates ◽  
Photosynthetic Purple Bacteria

Delocalization of a model light-harvesting complex is investigated using multipartite measures inspired by quantum information science.

scholarly journals A Study on the Heterogeneity of the Light-Harvesting Complex II from Ectothiorhodospira sp. after Acid/Chaotropic Treatment

2000 ◽  
Vol 55 (11-12) ◽  
pp. 943-947
Author(s):  
Andre Buche ◽  
Rafael Picorel
Keyword(s):  
Near Infrared ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Ionic Exchange ◽  
Absorption Bands ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Chromatographic Pattern ◽  
Light Harvesting Complex Ii ◽  
Polypeptide Backbone

The light-harvesting complex II of the purple bacteria has two strong near infrared electronic absorption bands, around 800 (B800) and 850 (B850) nm, arising from the Qy transitions of bacteriochlorophyll a. It was previously reported that under some specific acid/chaotropic conditions the B850 bacteriochlorophylls of the light-harvesting complex II of Ectothiorhodospira sp. are strongly reorganised. Part of these pigments absorbs at 843 nm while another set absorbs around 858 nm. The current work should investigate whether a mix of two different complexes could generate the 843- and 858-nm bands. Acid/chaotropic conditions inducing the reorganisation of B850 were reproduced on a sample bound to an ionic-exchange column. The chromatographic pattern was found strongly homogeneous. The findings indicate that the heterogeneity of the reorganised B850 results from two forms of differently structured bacteriochlorophylls bound to the same polypeptide backbone.

scholarly journals Comparison of the Energy Transfer Dynamics in Structural and Spectral Variants of the Light-Harvesting Complex 2 of Purple Bacteria

2020 ◽  
Vol 118 (3) ◽  
pp. 132a-133a
Author(s):  
Olivia C. Fiebig ◽  
Ashley L. Tong ◽  
Marcel Giansily ◽  
James N. Sturgis ◽  
Gabriela S. Schlau-Cohen
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Light Harvesting Complex

Is There Elliptic Distortion in the Light Harvesting Complex 2 of Purple Bacteria?

2011 ◽  
Vol 115 (44) ◽  
pp. 12947-12953 ◽  
Author(s):  
Seogjoo Jang ◽  
Robert J. Silbey ◽  
Ralf Kunz ◽  
Clemens Hofmann ◽  
Jürgen Köhler
Keyword(s):  
Light Harvesting ◽  
Purple Bacteria ◽  
Light Harvesting Complex

The study of photo-induced ultrafast dynamics in light-harvesting complex LH2 of purple bacteria

2006 ◽  
Vol 1 (3) ◽  
pp. 283-294 ◽  
Author(s):  
Wei-min Liu ◽  
Yong-li Yan ◽  
Kang-jun Liu ◽  
Chun-he Xu ◽  
Shi-xiong Qian
Keyword(s):  
Light Harvesting ◽  
Purple Bacteria ◽  
Ultrafast Dynamics ◽  
Light Harvesting Complex
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