Spectroscopic investigation of iron(III) cysteamine dioxygenase in the presence of substrate (analogs): implications for the nature of substrate-bound reaction intermediates

2021 ◽  
Author(s):  
Rebeca L. Fernandez ◽  
Nicholas D. Juntunen ◽  
Brian G. Fox ◽  
Thomas C. Brunold
Keyword(s):  
Spectroscopic Investigation ◽  
Reaction Intermediates ◽  
Substrate Analogs

Spectroscopic Investigation of the Primary Reaction Intermediates in the Oxidation of Levitated Droplets of Energetic Ionic Liquids

2017 ◽  
Vol 8 (24) ◽  
pp. 6053-6059 ◽  
Author(s):  
Stephen J. Brotton ◽  
Michael Lucas ◽  
Steven D. Chambreau ◽  
Ghanshyam L. Vaghjiani ◽  
Jiang Yu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Investigation ◽  
Reaction Intermediates ◽  
Primary Reaction ◽  
Levitated Droplets ◽  
Energetic Ionic Liquids

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

Analyzing reactions of single mechanoenzyme molecules by light microscopy

1992 ◽  
Vol 50 (1) ◽  
pp. 426-427
Author(s):  
Jeff Gelles
Keyword(s):  
Image Processing ◽  
Reaction Mechanisms ◽  
Transient State ◽  
Nanometer Scale ◽  
Reaction Intermediates ◽  
Enzyme Molecule ◽  
Directed Movement ◽  
Enzyme Molecules ◽  
Individual Enzyme ◽  
Single Reaction

Mechanoenzymes are enzymes which use a chemical reaction to power directed movement along biological polymer. Such enzymes include the cytoskeletal motors (e.g., myosins, dyneins, and kinesins) as well as nucleic acid polymerases and helicases. A single catalytic turnover of a mechanoenzyme moves the enzyme molecule along the polymer a distance on the order of 10−9 m We have developed light microscope and digital image processing methods to detect and measure nanometer-scale motions driven by single mechanoenzyme molecules. These techniques enable one to monitor the occurrence of single reaction steps and to measure the lifetimes of reaction intermediates in individual enzyme molecules. This information can be used to elucidate reaction mechanisms and determine microscopic rate constants. Such an approach circumvents difficulties encountered in the use of traditional transient-state kinetics techniques to examine mechanoenzyme reaction mechanisms.

SPECTROSCOPIC INVESTIGATION OF SOLID ROCKET SIGNATURES

1997 ◽  
Vol 4 (1-6) ◽  
pp. 927-933
Author(s):  
Wilhelm Eckl ◽  
W. Liehmann ◽  
Norbert Eisenreich ◽  
M. Weindel ◽  
L. Deimling
Keyword(s):  
Spectroscopic Investigation ◽  
Solid Rocket
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