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Putative Hydrogen Bond to Tyrosine M208 in Photosynthetic Reaction Centers from Rhodobacter capsulatus Significantly Slows Primary Charge Separation
Coagulation Nano TiO2 Nano Al2O3 Breakage Fractal dimension
2016/5/25
Slow, ～50 ps, P* → P(+)HA(-) electron transfer is observed in Rhodobacter capsulatus reaction centers (RCs) bearing the native Tyr residue at M208 and the single amino acid change of isoleucine at M20...
Photochemistry of a Bacterial Photosynthetic Reaction Center Missing the Initial Bacteriochlorophyll Electron Acceptor
Carbon nanotubes Composite Terahertz properties
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...
Solvation Response Along the Reaction Coordinate in the Active Site of Ketosteroid Isomerase
Pseudomonas putida Coumarins Isomerases Spectrometry, Fluorescence Catalytic Domain Ketosteroids Biocatalysis Light Models, Molecular Equilenin
2016/5/25
A light-activated reaction analog has been developed to mimic the catalytic reaction cycle of Delta(5)-3-ketosteroid isomerase to probe the functionally relevant protein solvation response to the cata...
Trapping the P+BL- Initial Intermediate State of Charge Separation in Photosynthetic Reaction Centers from Rhodobacter capsulatus
Humans Adult Physical Education and Training Physical Fitness Sports Male
2016/5/25
The short-lived (<1 ps) initial intermediate state P(+)B(L)(-) in the photoinduced charge separation process of the bacterial photosynthetic reaction center has been trapped in two D(LL)-based Rhodoba...
Temperature Dependence of Electron Transfer to the M-Side Bacteriopheophytin in Rhodobacter capsulatus Reaction Centers
hydrogenation fatty acids stereoselectivity kinetics
2016/5/25
Subpicosecond time-resolved absorption measurements at 77 K on two reaction center (RC) mutants of Rhodobacter capsulatus are reported. In the D(LL) mutant the D helix of the M subunit has been substi...
Charge Delocalization in the Special-Pair Radical Cation of Mutant Reaction Centers of Rhodobacter Sphaeroides from Stark Spectra and Nonadiabatic Spectral Simulations
Rhodobacter sphaeroides Cations Spectrophotometry Spectroscopy, Fourier Transform Infrared Mutagenesis,Site-Directed Absorption Dimerization Oxidation-Reduction Mutation Electrochemistry
2016/5/24
Stark and absorption spectra for the hole-transfer band of the bacteriochlorophyll special pair in the wild-type and L131LH, M160LH, and L131LH/M160LH mutants of the bacterial reaction center of Rhodo...
High Yield of M-Side Electron Transfer in Mutants of Rhodobacter Capsulatus Reaction Centers Lacking the L-Side Bacteriopheophytin
Rhodobacter capsulatus Pheophytins Detergents Spectrum Analysis Oxidation-Reduction Mutation Plasmids Amino Acid Sequence Molecular Sequence Data Histidine
2016/5/24
We present studies on a series of photosynthetic reaction center (RC) mutants created in the background of the Rhodobacter capsulatus D(LL) mutant, in which the D helix of the M subunit has been subst...
Probing Excited-State Electron Transfer by Resonance Stark Spectroscopy:4.Mutations near BL in Photosynthetic Reaction Centers Perturb Multiple Factors that Affect BL/fBL+HL
Excited-State Electron Transfer Resonance Stark Spectroscopy Mutations near BL Photosynthetic Reaction Centers Perturb Multiple Factors BL/fBL+HL
2016/5/24
Stark spectra have been obtained in the region of absorption by the accessory bacteriochlorophylls (the B-band region around 800 nm) in Rhodobacter sphaeroides reaction centers. The Stark spectra in t...
Excited-State Energy Transfer Pathways in Photosynthetic reaction Centers:5.Oxidized and Triplet Excited Special Pairs as Energy Acceptors
triplet state spin-orbit coupling primary donor intersystem crossing g-anisotropy high-field EPR temperature dependence
2016/5/24
In bacterial photosynthetic reaction centers, ultrafast singlet excited-state energy transfer occurs from the monomeric bacteriochlorophylls, B, and bacteriopheophytins, H, to the homodimer special pa...
Intervalence Band Stark Effect of the Special Pair Radical Cation in Bacterial Photosynthetic Reaction Centers
alloys low index single crystal surfaces low energy electron diffraction (LEED) scanning tunneling microscopy X-ray standing waves surface relaxation and reconstruction tin copper
2016/5/24
The Stark spectrum of the intervalence band of the special pair radical cation in bacterial photosynthetic reaction centers is presented. This spectrum, centered at 2600 cm-1, is modeled using a gener...
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
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 Energy Transfer Pathways in Photosynthetic Reaction Centers.4.Asymmetric Energy Transfer in the Heterodimer Mutant
in-modified beta zeolite reductive solid-state ion exchange Lewis acidity m-xylene transformation
2016/5/23
In bacterial photosynthetic reaction centers, ultrafast singlet excited state energy transfer occurs from the monomeric bacteriochlorophylls, B, and bacteriopheophytins, H, to the homodimer special pa...
Excited State Energy Transfer Pathways in Photosynthetic Reaction Centers.3.Ultrafast Emission from the Monomeric Bacteriochlorophylls
phase-transfer catalysis synthesis porphyrins metalloporphyrins aromatic aldehydes photocatalytic oxidation dynamics
2016/5/23
Ultrafast singlet excited state energy transfer occurs from the monomeric bacteriopheophytin (H) and bacteriochlorophyll (B) chromophores to the primary electron donor or special pair (P) in bacterial...
The Mechanism of Triplet Energy Transfer from the Special Pair to the Carotenoid in Bacterial Reaction Centers
Triplet Energy Transfer Carotenoid Bacterial Reaction Centers
2016/5/23
The kinetics of triplet energy transfer from the primary electron donor P, a bacteriochlorophyll dimer, to the carotenoid were measured in the M182HL mutant of Rhodobacter sphaeroides photosynthetic r...
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
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...