We have measured the static magnetization of unreduced and reduced reaction centers that vary in their quinone content. Measurements were performed in the temperature range 0.7 degrees K less than T less than 200 degrees K and magnetic fields of up to 10 kG. The electronic g-value, crystal field parameters D, E, and the exchange interaction, J, between the quinone spin and Fe2+ were determined using the spin Hamiltonian formalism. The effective moment mu eff/Fe2+ of both reduced and unreduced samples were determined to be 5.35 +/- 0.15 Bohr magnetons. This shows, in agreement with previous findings, that Fe2+ does not change its valence state when the reaction centers are reduced. Typical values of D congruent to +5 cm-1 and E/D congruent t...
We report electron paramagnetic resonance (EPR) experiments in frozen solutions of unreduced and red...
The reaction center from Rhodobacter sphaeroides is responsible for the primary process of photosynt...
AbstractNon-heme iron is a conservative component of type II photosynthetic reaction centers of unkn...
We have measured the static magnetization of unreduced and reduced reaction centers that vary in the...
Electron paramagnetic resonance (EPR) spectra of the reduced quinone-iron acceptor complex in reacti...
128 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1982.Zero field Mossbauer measurem...
We investigated type II bacterial photosynthetic reaction centers, which contain a quinone - iron co...
Zero field Mossbauer measurements on 57Fe-enriched reaction centers (RCs) differing in ubiquinone co...
Extended x-ray absorption fine structure (EXAFS) studies were performed on reaction centers (RC) of ...
AbstractIn the light-induced charge separation that takes place in the bacterial photosynthetic reac...
The magnitude and orientation of the electronic g-tensor of the primary electron acceptor quinone ra...
AbstractEPR signals in the high-spin region were studied at 10 K in photosystem II (PS II) particles...
AbstractEPR was used to study the triplet state of chlorophyll generated by radical pair recombinati...
The three-dimensional structure of the reaction center (RC) from Rhodobacter sphaeroides has been de...
The geometry of the hydrogen bonds to the two carbonyl oxygens of the semiquinone QA- in the reactio...
We report electron paramagnetic resonance (EPR) experiments in frozen solutions of unreduced and red...
The reaction center from Rhodobacter sphaeroides is responsible for the primary process of photosynt...
AbstractNon-heme iron is a conservative component of type II photosynthetic reaction centers of unkn...
We have measured the static magnetization of unreduced and reduced reaction centers that vary in the...
Electron paramagnetic resonance (EPR) spectra of the reduced quinone-iron acceptor complex in reacti...
128 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1982.Zero field Mossbauer measurem...
We investigated type II bacterial photosynthetic reaction centers, which contain a quinone - iron co...
Zero field Mossbauer measurements on 57Fe-enriched reaction centers (RCs) differing in ubiquinone co...
Extended x-ray absorption fine structure (EXAFS) studies were performed on reaction centers (RC) of ...
AbstractIn the light-induced charge separation that takes place in the bacterial photosynthetic reac...
The magnitude and orientation of the electronic g-tensor of the primary electron acceptor quinone ra...
AbstractEPR signals in the high-spin region were studied at 10 K in photosystem II (PS II) particles...
AbstractEPR was used to study the triplet state of chlorophyll generated by radical pair recombinati...
The three-dimensional structure of the reaction center (RC) from Rhodobacter sphaeroides has been de...
The geometry of the hydrogen bonds to the two carbonyl oxygens of the semiquinone QA- in the reactio...
We report electron paramagnetic resonance (EPR) experiments in frozen solutions of unreduced and red...
The reaction center from Rhodobacter sphaeroides is responsible for the primary process of photosynt...
AbstractNon-heme iron is a conservative component of type II photosynthetic reaction centers of unkn...