搜索结果: 1-13 共查到“生物学 spectroscopy”相关记录13条 . 查询时间(0.109 秒)
Site-Specific Measurement of Water Dynamics in the Substrate Pocket of Ketosteroid Isomerase Using Time-Resolved Vibrational Spectroscopy
IL-33 ST2 MWCNTs pulmonary fibrosis nanotoxicology
2016/5/25
Little is known about the reorganization capacity of water molecules at the active sites of enzymes and how this couples to the catalytic reaction. Here, we study the dynamics of water molecules at th...
Ribonuclease S Dynamics Measured Using a Nitrile Label with 2D IR Vibrational Echo Spectroscopy
Anthraquinonic dyes Boron-doped diamond anode Metal catalysts Solar photoelectro-Fenton Wastewater treatment
2016/5/25
A nitrile-labeled amino acid, p-cyanophenylalanine, is introduced near the active site of the semisynthetic enzyme ribonuclease S to serve as a probe of protein dynamics and fluctuations. Ribonuclease...
Charge Transfer in Photoacids Observed by Stark Spectroscopy
cre recombinase pituitary GSU transgenic mouse muscle
2016/5/25
The charge redistribution upon photoexcitation is investigated for a series of pyrene photoacids to better understand the driving force behind excited-state proton-transfer processes. The changes in e...
Vibrational Stark Spectroscopy in Proteins:A Probe and Calibration for Electrostatic Fields
affinity partition plasma membrane IGF-I receptor C6 glioma wheat germ agglutinin two-phase partitioning
2016/5/23
We report the first measurement of the vibrational Stark effect in a protein, providing quantitative information on the sensitivity of a vibrational transition to an applied electric field. This can b...
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...
Stark Spectroscopy of Donor-Acceptor Polyenes:Correlation with Nonlinear Optical Measurements
antitumor agents epothilones macrolactonization natural products total synthesis
2016/5/23
Stark Spectroscopy of Donor-Acceptor Polyenes:Correlation with Nonlinear Optical Measurements.
Stark Effect (Electroabsorption) Spectroscopy of Photosynthetic Reaction Centers at 1.5 K:Evidence that the Special Pair has a Large Excited-State Polarizability
Photosynthesis Reaction center Stark spectroscopy Specialpair
2016/5/23
The Stark effect or electroabsorption spectrum of the Qy transition of the special pair, P, of Rb. sphaeroides reaction centers has been measured at 1.5 K in frozen glycerol/buffer glasses. Under thes...
Perturbations of the Distal Heme Pocket in Human Myoglobin Mutants Probed by Infrared Spectroscopy of Bound CO:Correlation with Ligand Binding Kinetics
Distal Heme Pocket Human Myoglobin Mutants Probed Infrared Spectroscopy Bound CO:Correlation Ligand Binding Kinetics
2016/5/23
The infrared spectra of CO bound to human myoglobin and myoglobin mutants at positions His-64, Val-68, Asp-60, and Lys-45 on the distal side have been measured between 100 and 300 K. Large differences...
Stark Effect Spectroscopy of Bacteriochlorophyll in Light-harvesting Complexes from Photosynthetic Bacteria
Stark effect Electric field effect Antenna complex Light harvesting complex Energy transfer BCP bacteriochlorophyll a protein RC reaction center
2016/5/23
The effects of an applied electric field on the Q y absorption and fluorescence spectra of three antenna complexes from photosynthetic bacteria have been measured at 77 K: the bacteriochlorophyll a pr...
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
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...
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...
We have evaluated the application of spectroscopy using an insertion-type fiber-optic probe and a sensor at wavelengths from 400 to 1,100 nm to the measurement of milk fat content on dairy farms. The ...
Prediction of Heavy Metal Content in Compost Using Near-infrared Reflectance Spectroscopy
Compost Quality NIRS Calibration Equation Coefficient of Multiple Determination Standard Error of Prediction
2016/4/18
Since the application of relatively high levels of heavy metals in the compost poses a potential hazard to plants and animals, the content of heavy metals in the compost with animal manure is importan...