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Structure and properties of K141E mutant of small heat shock protein HSP22 (HspB8, H11) that is expressed in human neuromuscular disordersстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Kim Maria V., Kasakov Alexei S., Seit-Nebi Alim S., Marston Steven B., Gusev Nikolal B.
- Журнал: Archives of Biochemistry and Biophysics
- Том: 454
- Номер: 1
- Год издания: 2006
- Издательство: Academic Press
- Местоположение издательства: United States
- Первая страница: 32
- Последняя страница: 41
- DOI: 10.1016/j.abb.2006.07.014
- Аннотация: Some properties of the K141E mutant of human HSP22 that is expressed in distal hereditary motor neuropathy were investigated. This mutation slightly decreased intrinsic fluorescence of HSP22 and induced changes in the far UV CD spectra that correlate with increase of disordered structure. Destabilized K141E mutant was more susceptible to trypsinolysis than the wild type protein. Mutation K141E did not significantly affect the hydrophobic properties measured by bis-ANS binding and did not affect the quaternary structure of HSP22. With insulin as a substrate the chaperone-like activity of K141E mutant and the wild type protein were similar. However with alcohol dehydrogenase and rhodanese the chaperone-like activity of K141E mutant was remarkably lower than the corresponding activity of the wild type protein. It is concluded that K 141 E mutation induces destabilization of HSP22 structure and probably by this means diminish the chaperone-like activity of HSP22 with certain protein substrates. (c) 2006 Elsevier Inc. All rights reserved.
- Добавил в систему: Гусев Николай Борисович