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Effect of heavy-metal ions on dynamic characteristics of collagen molecules in solutionsстатья
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: 10 февраля 2021 г.
- Авторы: Maslennikova A.D., Sergeeva I.A., Petrova G.P.
- Журнал: Moscow University Physics Bulletin
- Том: 68
- Номер: 2
- Год издания: 2013
- Издательство: Allerton Press
- Местоположение издательства: New York, N.Y., United States
- Первая страница: 154
- Последняя страница: 158
- DOI: 10.3103/S0027134913020094
- Аннотация: Effect of heavy (Pb2+, Cs+) and light (Na+) metal ions on the molecular-dynamic characteristics of type-I collagen in aqueous solution was studied using the method of dynamic light scattering. It was found that the dependence of the translational diffusion coefficient D (t) from pH solutions has a nonlinear form with a pronounced extremum close to the isoelectric point of the protein (pI 6.0). For pure aqueous solution of protein there is a maximum of D (t) in isoelectric point. For collagen solutions with the addition of heavy-metal salts the minimum of D (t) was observed near the isoelectric point. This fenomenon is connected with the formation of protein nanoclusters in solution. With concentration of heavy metal ions increasing translational diffusion coefficient Dt decreases, which shows on increasing of aggregation effect. The addition of sodium ions in aqueous solution of collagen containing heavy metal ions sharp decreasing of the translational diffusion of molecules is observed. That can be connected with the rise of scattering particles masses.
- Добавил в систему: Петрова Галина Петровна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2013_Vestnik_Maslennikova.pdf | 212,7 КБ | 15 января 2021 [i.a.sergeeva] |