Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Electronic excited states and excitation transfer kinetics in the Fenna-Matthews-Olson protein of the photosynthetic bacterium Prosthecochloris aestuarii at low temperatures
Date
1999-01-01
Author
Iseri, EI
Gulen, D
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
186
views
0
downloads
Cite This
The molecular structure-function relationship of the Fenna-Matthews-Olson light-harvesting complex of the photosynthetic green bacterium Prosthecochloris aestuarii has been investigated. It has been assumed that the electronic excited states responsible for the function (transfer of electronic excitation energy) result from the dipole-dipole interactions between the bacteriochlorophyll molecules bound to the polypeptide chain of the complex at a specific three-dimensional geometry. The molecular structure-electronic excited states relationship has been addressed on the basis of simultaneous simulations of several spectroscopic observations. Current electronic excited state models for the Fenna-Matthews-Olson complex have generally been based on obtaining an optimal match between the information contents of the optical steady-state spectra and the bacteriochlorophyll organization. Recent kinetic and spectral information gathered from ultrafast time-resolved measurements have not yet been used effectively for further refinement of the excited state models and for quantification of the relation between the excited states and the energy transfer processes. In this study, we have searched for a model that not only can explain the key features of several steady-state spectra but also the temporal and spectral evolution observed in a recent absorption difference experiment and we have discussed the implications of this model for equilibration of the electronic excitation energy in systems at low temperatures.
Subject Keywords
Biophysics
,
General Medicine
URI
https://hdl.handle.net/11511/65393
Journal
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS
DOI
https://doi.org/10.1007/s002490050205
Collections
Department of Physics, Article
Suggestions
OpenMETU
Core
Oligomerization and cell surface expression of recombinant GABA(A) receptors tagged in the delta subunit
Oflaz, Furkan Enes; Son, Çağdaş Devrim; Arslan, Ayla (IMR Press, 2019-12-01)
The gamma-Aminobutyric acid type A receptors (GABA(A) Rs) are heteropentameric chloride channels responsible for primary inhibition in the mammalian brain. Studies have shown the expression of recombinant GABA(A) R subunits tagged with the green fluorescent protein (GFP), a 26.9 kDa protein that exhibits bright green fluorescence when exposed to light in the blue to ultraviolet range. This allows the formation of recombinant proteins essential for the development of relevant in-vitro and in-vivo methodologi...
Structural properties of an engineered outer membrane protein G mutant, OmpG-16SL, investigated with infrared spectroscopy
Yilmaz, Irem; Yildiz, Ozkan; KORKMAZ ÖZKAN, FİLİZ (Informa UK Limited, 2019-05-31)
The structural and functional differences between wild type (WT) outer membrane protein G and its two mutants are investigated with Fourier transform infrared spectroscopy. Both mutants have a long extension to the primary sequence to increase the number of beta-strands from 14 (wild type) to 16 in an attempt to enlarge the pore diameter. The comparison among proteins is made in terms of pH-dependent conformational changes and thermal stability. Results show that all proteins respond to pH change but at dif...
PLASMID PATTERNS OF BACILLUS-THURINGIENSIS 81 AND ITS CRYSTAL-NEGATIVE MUTANTS
AFKHAMI, P; Özcengiz, Gülay; ALAEDDINOGLU, NG (Springer Science and Business Media LLC, 1993-12-01)
A local isolate of Bacillus thuringiensis (B.t. 81) contained five distinct plasmids Relative amounts of these plasmids varied at different stages of growth.Two Cry- mutants of the strain maintained all plasmids. The mutants, however, exhibited some variations in the patterns of large plasmids depending on the composition of culture medium even though they failed to produce crystal protein. Restriction analysis of the plasmids was also carried out for future cloning studies.
Exposure to sulfide causes populations shifts in sulfate-reducing consortia
İçgen, Bülent (Elsevier BV, 2006-10-01)
The shift in the community structure of a mixed culture of sulfate-reducing bacteria (SRB) at 0.5, 0.75, 1, and 1.5 kg m(-3) sulfide loadings was investigated in an anaerobic continuous bioreactor used for treatment of sulfate-containing wastewater by fluorescence in situ hybridization (FISH), using SRB species-specific and group-specific 16S rRNA-targeting probes. Hybridization analysis using these 16S rRNA-targeted oligonucleotide probes revealed that sulfide was toxic for Desulfonema, Desulfobulbus spp. ...
NEUROSECRETORY-CELLS WITH SYNAPTOID PERIKARYA IN HELIX - A DEFINITIVE DESCRIPTION OF SECRETORY RELEASE FROM THE SOMATA OF ENDOCRINE NEURONS
BAYRAKTAROGLU, E; WHITTLE, AC; GOLDING, DW (Elsevier BV, 1988-01-01)
Neurosecretory cells in the molluses Helix have perikarya that show clear signs of adaptation for both the synthesis and the discharge of secretory material. They are characterized morphologically by juxtaposition with the neural lamella. Passage of hormone into the haemocoel is apparently facilitated in many cases by the extreme attenuation of areas of the lamella and perineurium adjacent to the perikarya and by other forms of histological differentiation. Presumptive sites of release are characterized by ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
E. Iseri and D. Gulen, “Electronic excited states and excitation transfer kinetics in the Fenna-Matthews-Olson protein of the photosynthetic bacterium Prosthecochloris aestuarii at low temperatures,”
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS
, pp. 243–253, 1999, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65393.