Charge separation induces conformational changes in the photosynthetic reaction centre of purple bacteria

2002 ◽  
Vol 58 (10) ◽  
pp. 1660-1663 ◽  
Author(s):  
Günter Fritzsch ◽  
Jürgen Koepke ◽  
Ralf Diem ◽  
Andreas Kuglstatter ◽  
Laura Baciou
Keyword(s):  
Conformational Changes ◽  
Charge Separation ◽  
Purple Bacteria ◽  
Reaction Centre ◽  
Photosynthetic Reaction Centre

scholarly journals Light-driven conformational changes in a bacterial photosynthetic reaction centre

2004 ◽  
Vol 60 (a1) ◽  
pp. s150-s150
Author(s):  
G. P. Katona ◽  
U. Andréasson ◽  
P. Gourdon ◽  
M. E. Landau ◽  
A. Snijder ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Reaction Centre ◽  
Photosynthetic Reaction Centre

scholarly journals Porous silicon pillar structures/photosynthetic reaction centre protein hybrid for bioelectronic applications

2021 ◽  
Author(s):  
Kata Hajdu ◽  
R. Fabiola Balderas-Valadez ◽  
Alessandro Carlino ◽  
Vivechana Agarwal ◽  
László Nagy
Keyword(s):  
Porous Silicon ◽  
Purple Bacteria ◽  
3D Structure ◽  
Reaction Centre ◽  
Acceptor Side ◽  
New Type ◽  
Light Excitation ◽  
Pigment Protein Complex ◽  
Biological Organisation ◽  
Photosynthetic Reaction Centre

AbstractPhotosynthetic biomaterials have attracted considerable attention at different levels of the biological organisation, from molecules to the biosphere, due to a variety of artificial application possibilities. During photosynthesis, the first steps of the conversion of light energy into chemical energy take place in a pigment–protein complex, called reaction centre (RC). In our experiments photosynthetic reaction centre protein, purified from Rhodobacter sphaeroides R-26 purple bacteria, was bound to porous silicon pillars (PSiP) after the electropolymerisation of aniline onto the surface. This new type of biohybrid material showed remarkable photoactivity in terms of measured photocurrent under light excitation in an electrochemical cell. The photocurrent was found to increase considerably after the addition of ubiquinone (UQ-0), an e−-acceptor mediator of the RC. The photoactivity of the complex was found to decrease by the addition of terbutryn, the chemical which inhibits the e−-transport on the acceptor side of the RC. In addition to the generation of sizeable light-induced photocurrents, using the PSiP/RC photoactive hybrid nanocomposite material, the system was found to be sensitive towards RC inhibitors and herbicides. This highly ordered patterned 3D structure opens new solution for designing low-power (bio-)optoelectronic, biophotonic and biosensing devices. Graphical abstract

scholarly journals Synthetically tuneable biomimetic artificial photosynthetic reaction centres that closely resemble the natural system in purple bacteria

2016 ◽  
Vol 7 (10) ◽  
pp. 6534-6550 ◽  
Author(s):  
Sai-Ho Lee ◽  
Iain M. Blake ◽  
Allan G. Larsen ◽  
James A. McDonald ◽  
Kei Ohkubo ◽  
...  
Keyword(s):  
Purple Bacteria ◽  
Natural System ◽  
Reaction Centre ◽  
Reaction Centres ◽  
Photochemical Properties ◽  
Artificial Photosynthetic ◽  
Photosynthetic Reaction Centre

Synthetically flexible, rigid, tetrad molecules are shown to closely mimic structural and photochemical properties of the bacterial photosynthetic reaction centre.

A view of fast charge separation in the bacterial photosynthetic reaction centre involving weak environmental damping of a populated auxiliary chlorophyll state

1993 ◽  
Vol 205 (6) ◽  
pp. 591-596 ◽  
Author(s):  
Jan M. Hammerstad-Pedersen ◽  
Marianne H. Jensen ◽  
Yurij I. Kharkats ◽  
Aleksandr M. Kuznetsov ◽  
Jens Ulstrup
Keyword(s):  
Charge Separation ◽  
Reaction Centre ◽  
Fast Charge ◽  
Photosynthetic Reaction Centre

On the Role of Basic Residues in Adapting the Reaction Centre–LH1 Complex for Growth at Elevated Temperatures in Purple Bacteria

2005 ◽  
Vol 86 (1-2) ◽  
pp. 81-100 ◽  
Author(s):  
Ashley J. Watson ◽  
Arwel V. Hughes ◽  
Paul K. Fyfe ◽  
Marion C. Wakeham ◽  
Kate Holden-Dye ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Purple Bacteria ◽  
Reaction Centre

First moves towards photoautotrophic synthetic cells: In vitro study of photosynthetic reaction centre and cytochrome bc 1 complex interactions

2017 ◽  
Vol 229 ◽  
pp. 46-56 ◽  
Author(s):  
Emiliano Altamura ◽  
Rosa Fiorentino ◽  
Francesco Milano ◽  
Massimo Trotta ◽  
Gerardo Palazzo ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Reaction Centre ◽  
Cytochrome Bc ◽  
Complex Interactions ◽  
Synthetic Cells ◽  
Photosynthetic Reaction Centre
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