Search Results - "Debus, R J"

The manganese and calcium ions of photosynthetic oxygen evolution by Debus, R J

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Site-directed mutagenesis identifies a tyrosine radical involved in the photosynthetic oxygen-evolving system by Debus, Richard J., Barry, Bridgette A., Babcock, Gerald T., McIntosh, Lee

“…Photosynthetic oxygen evolution takes place in the thylakoid protein complex known as photosystem II. The reaction center core of this photosystem, where…”
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D1-Asp170 Is Structurally Coupled to the Oxygen Evolving Complex in Photosystem II As Revealed by Light-Induced Fourier Transform Infrared Difference Spectroscopy by Chu, Hsiu-An, Debus, Richard J, Babcock, Gerald T

“…We report both mid-frequency (1800−1200 cm-1) and low-frequency (670−350 cm-1) S2/S1 FTIR difference spectra of photosystem II (PSII) particles isolated from…”
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Does Histidine 332 of the D1 Polypeptide Ligate the Manganese Cluster in Photosystem II? An Electron Spin Echo Envelope Modulation Study by Debus, Richard J, Campbell, Kristy A, Gregor, Wolfgang, Li, Zhao-Liang, Burnap, Robert L, Britt, R. David

“…The tetranuclear manganese cluster in photosystem II is ligated by one or more histidine residues, as shown by an electron spin echo envelope modulation…”
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Directed mutagenesis indicates that the donor to P 680+ in photosystem II is tyrosine-161 of the D1 polypeptide by Debus, R. J, Barry, B. A, Sithole, I, Babcock, Gerald T, McIntosh, L

“…Photosystem II contains two redox-active tyrosines. One of these, YZ, reduces the reaction center chlorophyll, P680, and transfers the oxidizing equivalent to…”
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Water oxidation in photosystem II: from radical chemistry to multielectron chemistry by Babcock, Gerald T, Barry, B. A, Debus, R. J, Hoganson, C. W, Atamian, M, McIntosh, L, Sithole, I, Yocum, C. F

“…This review article describes the progress that has been made in understanding the photosystem II/oxygen-evolving complex (PSII/OEC). Photosystem II forms the…”
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Evidence from directed mutagenesis that aspartate 170 of the D1 polypeptide influences the assembly and/or stability of the manganese cluster in the photosynthetic water-splitting complex by Boerner, Renee J, Nguyen, Anh P, Barry, Bridgette A, Debus, Richard J

“…To identify amino acid residues that influence the assembly or stability of the manganese cluster in photosystem II, we have generated site-directed mutations…”
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LM complex of reaction centers from Rhodopseudomonas sphaeroides R-26: characterization and reconstitution with the H subunit by Debus, R. J, Feher, G, Okamura, M. Y

“…Reaction centers (RCs) from the photosynthetic bacterium R. sphaeroides are composed of three subunits (designated L, M, and H) plus cofactors. An active and…”
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Determination of the antidepressant fluoxetine and its metabolite norfluoxetine in serum by reversed-phase HPLC with ultraviolet detection by Orsulak, P J, Kenney, J T, Debus, J R, Crowley, G, Wittman, P D

“…A procedure has been developed for measuring fluoxetine and its desmethyl metabolite, norfluoxetine, in serum by reversed-phase high-performance liquid…”
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Primary Photochemistry of Iron-Depleted and Zinc-Reconstituted Reaction Centers from Rhodopseudomonas sphaeroides by Kirmaier, C., Holten, D., Debus, R. J., Feher, G., Okamura, M. Y.

“…The primary photochemistry of Fe-depleted and Zn-reconstituted reaction centers from Rhodopseudomonas sphaeroides R-26.1 was studied by transient absorption…”
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Removal of stable tyrosine radical D+ affects the structure or redox properties of tyrosine Z in manganese-depleted photosystem II particles from Synechocystis 6803 by BOERNER, R. J, BIXBY, K. A, NGUYEN, A. P, NOREN, G. H, DEBUS, R. J, BARRY, B. A

“…Photosystem II contains two redox-active tyrosines, D and Z. To understand the function of the dark stable tyrosine radical, D+, we have characterized two…”
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Rapid Formation of the Stable Tyrosyl Radical in Photosystem II by Faller, Peter, Debus, Richard J., Brettel, Klaus, Sugiura, Miwa, Rutherford, A. William, Boussac, Alain

“…Two symmetrically positioned redox active tyrosine residues are present in the photosystem II (PSII) reaction center. One of them, TyrZ, is oxidized in the…”
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Construction of an obligate photoheterotrophic mutant of the cyanobacterium Synechocystis 6803: inactivation of the psbA gene family by Jansson, C, Debus, R.J, Osiewacz, H.D, Gurevitz, M, McIntosh, L

“…psbA in Synechocystis 6803 was found to belong to a small multigene family with three copies. The psbA gene family was inactivated in vitro by insertion of…”
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Role of D1-His190 in Proton-Coupled Electron Transfer Reactions in Photosystem II:  A Chemical Complementation Study by Hays, Anna-Maria A, Vassiliev, Ilya R, Golbeck, John H, Debus, Richard J

“…Recent models for water oxidation in photosystem II propose that His190 of the D1 polypeptide facilitates electron transfer from tyrosine YZ to P680 + by…”
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Fluoxetine versus trazodone in the treatment of outpatients with major depression by DEBUS, J. R, RUSH, A. J, HIMMEL, C, TYLER, D, POLATIN, P, WEISSENBURGER, J

“…Fluoxetine and trazodone were compared in a double-blind, randomized, parallel, 6-week trial in 43 outpatients with major depression after a 1-week…”
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Electron nuclear double resonance of semiquinones in reaction centers of Rhodopseudomonas sphaeroides by Lubitz, W, Abresch, E C, Debus, R J, Isaacson, R A, Okamura, M Y, Feher, G

“…Replacement of Fe2+ by Zn2+ in reaction centers of Rhodopseudomonas sphaeroides enabled us to perform ENDOR (electron nuclear double resonance) experiments on…”
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Amino Acid Residues That Influence the Binding of Manganese or Calcium to Photosystem II. 1. The Lumenal Interhelical Domains of the D1 Polypeptide by Chu, Hsiu-An, Nguyen, Anh P, Debus, Richard J

“…To identify amino acid residues that ligate the manganese and calcium ions of photosystem II or that are otherwise crucial to water oxidation, site-directed…”
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Site-Directed Photosystem II Mutants with Perturbed Oxygen-Evolving Properties. 1. Instability or Inefficient Assembly of the Manganese Cluster In vivo by Chu, Hsiu-An, Nguyen, Anh P, Debus, Richard J

“…Several site-directed photosystem II mutants with substitutions at Asp-170 of the D1 polypeptide were characterized by noninvasive methods in vivo. In several…”
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Amino Acid Residues That Influence the Binding of Manganese or Calcium to Photosystem II. 2. The Carboxy-Terminal Domain of the D1 Polypeptide by Chu, Hsiu-An, Nguyen, Anh P, Debus, Richard J

“…To identify amino acid residues that ligate the manganese and calcium ions of photosystem II or are otherwise crucial to water oxidation, site-directed…”
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Photosynthetic water oxidation in Synechocystis sp. PCC6803: mutations D1-E189K, R and Q are without influence on electron transfer at the donor side of photosystem II by Clausen, Jürgen, Winkler, Stephanie, Hays, Anna-Maria A, Hundelt, Monika, Debus, Richard J, Junge, Wolfgang

“…The oxygen-evolving manganese cluster (OEC) of photosynthesis is oxidised by the photochemically generated primary oxidant (P +⋅ 680) of photosystem II via a…”
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