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Rapid Isolation of Bacterial Photosynthetic Reaction Centers with an Engineered Poly-Histidine Tag
photosynthetic reaction center poly-histidine tag isolation method (bacterium)
2016/5/23
A very rapid method for isolating bacterial photosynthetic reaction centers (RCs) of high purity and yield is described. A poly-histidine tag is engineered at the C-terminus of the RC M-subunit, allow...
Photosynthetic Reaction Center Mutagenesis via Chimeric Rescue of a Non-functional Rhodobacter capsulatus puf Operon with Sequences from Rhodobacter sphaeroides
photosynthesis recombination bacteria energy transfer antenna
2016/5/23
Photosynthetically active chimeric reaction centers which utilize genetic information from both Rhodobacter capsulatus and Rb. sphaeroides puf operons were isolated using a novel method termed chimeri...
The Effect of Very High Magnetic Fields on the Reaction Dynamics in Bacterial Reaction Centers:Implications for the Reaction Mechanism
Reactioncenter Photosynthesis Bacterialphotosynthesis Delayedfluorescence Magnetic fieldeffect (Rb. sphaeroides)
2016/5/23
Magnetic field effects have proven to be a powerful tool for elucidating the mechanism of the initial charge separation and recombination steps in bacterial photosynthesis. Since the first data were o...
The Effect of Very High Magnetic Fields on the Delayed Fluorescence from Photosynthetic Reaction Centers
Reactioncenter Photosynthesis Bacterialphotosynthesis Delayedfluorescence Magneticfieldeffect (Rb. sphaeroides)
2016/5/23
Delayed fluorescence is observed from quinone-depleted Rhodobacter sphaeroides reaction centers due to re-formation of the excited state of the special pair electron donor from the initially formed ra...
Phosphorescence from the Primary Electron Donor in Rhodobacter sphaeroides and Rhodopseudomonas viridis Reaction Centers
Triplet state donor Phosphorescence Reaction center ( Rb. sphaeroides ) ( Rps. viridis ) BChl bacteriochlorophyll EDTA ethylene-diaminetetracetic acid EPR
2016/5/20
Phosphorescence has been detected from the dimeric primary electron donor in Rhodobacter sphaeroides and Rhodopseudomonas viridis reaction centers. For Rb. sphaeroides the emission maximum occurs at 1...
Stark Effect Spectroscopy of Rhodobacter Sphaeroides and Rhodopseudomonas Viridis Reaction Centers
Biophysics Photosynthesis Electron Transfer Electroabsorption Electrochromism
2016/5/20
The nature of the initially excited state of the primary electron donor or special pair has been investigated by Stark effect spectroscopy for reaction centers from the photosynthetic bacteria Rhodops...
Effects of Nuclear Spin Polarization on Reaction Dynamics in Photosynthetic Bacterial Reaction Centers
Nuclear Spin Polarization Reaction Dynamics Photosynthetic Bacterial Reaction Centers
2016/5/20
Singlet-triplet mixing in the initial radical-pair state, P[unk]I[unk], of photosynthetic bacterial reaction centers is due to the hyperfine mechanism at low magnetic fields and both the hyperfine and...
Magnetic Field Dependence of Radical Pair Decay Kinetics and Molecular Triplet Quantum Yield in Quinone-Depleted Reaction Centers
Photosynthesis Reaction center Radical pair decay Magnetic field Picosecond spectroscopy
2016/5/20
Radical-pair decay kinetics and molecular triplet quantum yields at various magnetic fields are reported for quinone-depleted reaction centers from the photosynthetic bacterium Rhodopseudomonassphaero...
Some Exact Self-Similar Solutions to a Density-Dependent Reaction-Diffusion Model
Exact Self-Similar Density-Dependent Reaction-Diffusion Model Biological Physics
2012/4/20
In this paper, we investigated a density-dependent reaction-diffusion equation, $u_t = (u^{m})_{xx} + u - u^{m}$. This equation is known as the extension of the Fisher or Kolmogoroff-Petrovsky-Piscoun...
A theorem for the thermodynamics of chemical reaction networks at steady state
thermodynamics of chemical reaction networks steady state Biological Physics
2012/5/3
In this article the Gordan theorem is applied to the thermodynamics of a chemical reaction network at steady state. From a theoretical viewpoint it states that the exclusion (presence) of closed react...
Ubiquity of log-normal distributions in intra-cellular reaction dynamics
log-normal distribution fluctuation recursive growth
2010/12/2
The discovery of two fundamental laws concerning cellular dynamics with recursive growth is reported. Firstly, the chemical abundances measured over many cells were found to obey a log-normal distribu...