搜索结果: 1-15 共查到“理学 Reaction center”相关记录16条 . 查询时间(0.103 秒)
Photochemistry of a Bacterial Photosynthetic Reaction Center Missing the Initial Bacteriochlorophyll Electron Acceptor
Carbon nanotubes Composite Terahertz properties
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2016/5/25
A novel chromophore composition of the bacterial photosynthetic reaction center (RC) has been discovered: RCs lacking the L-side monomeric bacteriochlorophyll chromophore result from mutation of the n...
Energetics of Primary Charge Separation in Bacterial Photosynthetic Reaction Center Mutants:Triplet Decay in Large Magnetic Fields
horseradish peroxidase lignin peroxidase enzymatic oxidations N-demethylation methylene blue azure B azure C
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2016/5/24
The triplet state of aromatic molecules forms and decays by intersystem crossing, as originally demonstrated by Kasha and Lewis. By contrast, the triplet state of the primary electron donor, 3 P, in p...
Excited State Electronic Asymmetry of the Special Pair in Photosynthetic Reaction Center Mutants:Absorption and Stark Spectroscopy
Dimerization Electron Transport Electrons Hydrogen Bonding Models, Chemical Mutagenesis, Site-Directed Oxidation-Reduction Photosynthetic Reaction Center Complex Proteins Rhodobacter sphaeroides Spectrophotometry Static Electricity
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2016/5/23
The electronic absorption line shape and Stark spectrum of the lowest energy Q(y)() transition of the special pair in bacterial reaction centers contain a wealth of information on mixing with charge t...
Temperature Dependece of the Qy Resonance Raman Spectra of Bacteriochlorophylls,the Primary Electron Donor,and Bacteriopheophytins in the Bacterial Photosynthetic Reaction Center
Bacteriochlorophylls chemistry Electron Transport Infrared Rays Light-Harvesting Protein Complexes Pheophytins chemistry Photosynthetic Reaction Center Complex Proteins chemistry Research Support, U.S. Gov't, Non-P.H.S. Research Support,U.S. Gov't,P.H.S. Rhodobacter sphaeroides chemistry Spectrophotometry
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2016/5/23
Qy-excited resonance Raman spectra of the accessory bacteriochlorophylls (B), the bacteriopheophytins (H), and the primary electron donor (P) in the bacterial photosynthetic reaction center (RC) of Rh...
Dielectric Asymmetry in the Photosynthetic Reaction Center
Dielectric Asymmetry Photosynthetic Reaction Center
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2016/5/23
Although the three-dimensional structure of the bacterial photosynthetic reaction center (RC) reveals a high level of structural symmetry, with two nearly equivalent potential electron transfer pathwa...
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
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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...
Spectroscopic and Redox Properties of Sym1 and (M)F195H Rhodobacter capsulatus Reaction Center Symmetry Mutants Which Affect the Initial Electron Donor
Circular Dichroism Electron Spin Resonance Spectroscopy Electron Transport Genes, Bacterial Kinetics Light-Harvesting Protein Complexes Mutation Oxidation-Reduction Photosynthetic Reaction Center Complex Proteins Plasmids Protein Conformation Rhodobacter capsulatus Spectrophotometry
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2016/5/23
The redox properties, absorption, electroabsorption, CD, EPR, and P+QA- recombination kinetics have been measured for the special pairs of two mutants of Rhodobacter capsulatus reaction centers involv...
Biochemical Characterization and Electron-Transfer Reactions of sym1,a Rhodobacter capsulatus Reaction Center Symmetry Mutant which Affects the Initial Electron Donor
Biochemical Characterization Electron-Transfer Reactions sym1 Rhodobacter capsulatus Reaction Center Initial Electron Donor
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2016/5/23
A 51 bp section of the Rhodobacter capsulatus photosynthetic reaction center M subunit gene (nucleotides M562-M612 of the pufM structural sequence) encoding amino acids M187-M203 was replaced by the h...
Photochemical Hole-Burning Spectroscopy of a Photosynthetic Reaction Center Mutant with Altered Charge Separation Kinetics:Properties and Decay of the Initially Excited State
PRIMARY ELECTRON-DONOR VIRIDIS REACTION CENTERS BACTERIAL REACTION CENTERS RHODOPSEUDOMONAS-VIRIDIS RHODOBACTER-SPHAEROIDES BURNED SPECTRA PURPLE BACTERIA LOW-TEMPERATURE ABSORPTION HETERODIMER
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2016/5/23
Photochemical hole-burning spectra have been obtained for the lowest energy electronic absorption band of the primary electron donor P of photosynthetic reaction centers (RCs) that exhibit different r...
Stark Effect Spectroscopy of Carotenoids in Reaction Center and Antenna Complexes from Photosynthetic Bacteria
Stark effect Electric field effect Carotenoid Carotenoid bandshift
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2016/5/23
The effects of electric fields on the absorption spectra of the carotenoids spheroidene and spheroidenone in photosynthetic antenna and reaction center complexes (wild-type and several mutants) from p...
Stark Effect Spectroscopy of the Rhodobacter sphaeroides Reaction Center Heterodimer Mutant
Rhodobacter sphaeroides Macromolecular Substances Light-Harvesting Protein Complexes Photosynthetic Reaction Center Complex Proteins Bacterial Proteins Spectrophotometry Mutation Thermodynamics
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2016/5/23
The effect of an electric field has been measured on the absorption spectrum (Stark effect) of the heterodimer mutant (M)H202L of Rhodobacter sphaeroides reaction centers, where the primary electron d...
Chimeric Rescue of Rb. capsulatus Reaction Center Genes with Sequences from Rb.sphaeroides
Chimeric Rescue Rb. capsulatus Reaction Center Genes Rb.sphaeroides
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2016/5/23
Site-directed mutagenesis is becoming a very important technique in the study of photosynthetic reaction center structure-function relationships. However, there are certain disadvantages associated wi...
A Structural Model for the Photosynthetic Reaction Center
Structural Model Photosynthetic Reaction Center
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2016/5/20
We describe here the synthesis and characterization of the solution conformation of a molecule which brings into close proximity the principal molecular components believed to participate in the initi...
A Covalently Bound Dimeric Derivative of Pyrochlorophyllide a. A Possible Model for Reaction Center Chlorophyll
Dimeric Derivative Pyrochlorophyllide Reaction Center Chlorophyll
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2016/5/20
Molecular aggregation of chlorophyll has been the subject of intense study in several While there is good evidence for keto carbonyl-Mg interactions in nonbasic solvents, there is much less structural...
Two new requirements for producing normal ribosomes: (I) A novel helicase is needed for snoRNP biogenesis, and; (II) Pseudouridine modifications in the reaction center are important for ribosome function
Eukaryotic cells contain protein particles ribosomes RNA nucleotide pseudouridine
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2014/12/11
Eukaryotic cells contain scores of small nucleolar RNAs (snoRNAs) that are complexed with proteins in particles known as snoRNPs. SnoRNPs function in processing of ribosomal RNA (rRNA) and nucleotide ...