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[Catalysis by enzymes entrapped into reversed micelles of surfactants in organic solvents. Peroxidase in the aerosol OT-water-octane system]статья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Kliachko N.L., Levashov A.V., Martinek K.
- Журнал: Molekuliarnaia biologiia
- Том: 18
- Номер: 4
- Год издания: 1984
- Издательство: Russian Academy of Sciences
- Местоположение издательства: Russian Federation
- Первая страница: 1019
- Последняя страница: 1031
- Аннотация: Spectral and catalytic parameters of peroxidase solubilized in the aerosol OT-water-octane system have been studied. The spectrum of peroxidase solubilized in octane with AOT reversed micelles, a degree of surfactant hydration being above 12, is actually identical to that of the enzyme aqueous solution. On the other hand, significant spectral changes have been detected when transferring the enzyme from water to the reversed micelle medium at low degrees of surfactant hydration, precisely [H2O]/[AOT] less than 12. The reversed micelle-entrapped peroxidase catalyses the oxidation of pyrogallol with hydrogen peroxide much more actively (at [H2O]/[surfactant] approximately 13) than that in aqueous solution. The entrapment of peroxidase into surfactant reversed micelles increases precisely the catalytic constant of the reaction, i.e. the virtual reactivity of the enzyme increases ten and hundred times depending on degrees of surfactant hydration and concentration. The systems of reversed micelles may be considered as models of biomembranes. Our findings hence show that enzymes in vivo can be much more catalytically active then it appears possible to reveal in conventional experiments in vitro in aqueous solutions.
- Добавил в систему: Клячко Наталья Львовна