๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A spin-reduction assay for lipoxidase

โœ Scribed by Wallace Snipes; Kathryn Kenny; Alec Keith


Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
374 KB
Volume
81
Category
Article
ISSN
0003-2697

No coin nor oath required. For personal study only.

โœฆ Synopsis


Spin-label signals are reduced when the nitroxide is present in a lipoxidase reaction mixture.

This spin reduction can be used as an assay for enzyme activity in turbid systems where the conventional uv assay cannot be used. Data taken with the spin-reduction assay show that phospholipid preparations containing cholesterol are more resistant to oxidation by lipoxidase than are cholesterol-free preparations.


๐Ÿ“œ SIMILAR VOLUMES


The assay and pH profile of lipoxidase
โœ G. R. Ames; T. A. King ๐Ÿ“‚ Article ๐Ÿ“… 1966 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 262 KB
Spin-label assay for phospholipase A2
โœ Ching-San Lai; Jian-Zhong Zhang; Joy Joseph ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 483 KB

A rapid and continuous method for measuring phospholipase A2 activity using electron spin resonance spectroscopy and a spin-labeled phospholipid as a substrate has been developed. The substrate, 1-palmitoyl-2-(4-doxylpentanoyl)glycerophosphocholine, gives rise principally to a broad ESR line in aque

Spin-label assay for lysozyme
โœ Laurance S. Johnston; Francis C. Neuhaus ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 393 KB

A spin-label assay for lysozyme, which is based on the enzymatic hydrolysis of spin-labeled peptidoglycan, is described. Hydrolysis of this polymer by lysozyme results in sharpening of the esr spectrum. The rate of spectral sharpening is a function of enzyme concentration. When the activities of hen

Reduction of N-acetyl methionine sulfoxi
โœ Nathan Brot; Jean Werth; Daryl Koster; Herbert Weissbach ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 329 KB

A simple and rapid assay has been developed to measure the enzymatic activity of peptide methionine sulfoxide reductase. The assay is based on the reduction of labeled N-acetylmethionine sulfoxide to N-acetvlmethionine. The N-acetylmethionine can be separated from the substrate by extraction into et

A new assay for N-hydroxyarylamine O-ace
โœ Kazuki Saito; Atsuko Shinohara; Tetsuya Kamataki; Ryuichi Kato ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 423 KB

A simple tluorometric assay for N-hydroxyarylamine O-acetyltransferase is described and compared with a nucleic acid-binding assay. The assay method is based on the finding that the highly mutagenic 2-hydroxyamino-6-methyldipyrido[ 1,2-a:3',2'-dlimidazole (N-OH-Glu-P-I) was reduced to the correspond