Energy transfer pathways among phycobilin chromophores and fluorescence emission spectra of the phycobilisome core at 293 and 77 K

Energy transfer pathways between phycobiliproteins chromophores in the phycobilisome (PBS) core of the cyanobacterium Synechocystis sp. PCC 6803 were investigated. The computer 3D model of the PBS core with determination of chromophore to chromophore distance was created. Our kinetic equations based...

Full description

Saved in:
Bibliographic Details
Published in:Doklady. Biochemistry and biophysics 2015-11, Vol.465 (1), p.401-405
Main Authors: Stadnichuk, V. I., Lukashev, E. P., Yanyushin, M. F., Zlenko, D. V., Muronez, E. M., Stadnichuk, I. N., Krasilnikov, P. M.
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Bacteria
Biochemistry
Bioenergetics
Biological and Medical Physics
Biomedical and Life Sciences
Biophysics
Biophysics and Molecular Biology
Energy Transfer
Life Sciences
Molecular Sequence Data
Phycobilisomes - chemistry
Phycobilisomes - radiation effects
Spectrum analysis
Synechocystis - chemistry
Ultraviolet Rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Energy transfer pathways between phycobiliproteins chromophores in the phycobilisome (PBS) core of the cyanobacterium Synechocystis sp. PCC 6803 were investigated. The computer 3D model of the PBS core with determination of chromophore to chromophore distance was created. Our kinetic equations based on this model allowed us to describe the relative intensities of the fluorescence emission of the short(peaked at 665 nm) and long-wavelength (peaked at 680 nm) chromophores in the PBS core at low and room temperatures. The difference of emissions of the PBS core at 77 and 293 K are due to the back energy transfer, which is observed at room temperature and is negligible at 77 K.
ISSN:1607-6729
1608-3091
DOI:10.1134/S1607672915060149