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Glucoamylases from Penicillium verruculosum and Myceliophthora thermophila: Analysis of differences in activity against polymeric substrates based on 3D model structures of the intact enzymesстатья
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: 5 мая 2015 г.
- Авторы: Volkov P.V., Rozhkova A.M., Gusakov A.V., Zorov I.N., Sinitsyn A.P.
- Журнал: Biochimie
- Том: 110
- Год издания: 2015
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 45
- Последняя страница: 51
- DOI: 10.1016/j.biochi.2014.12.010
- Аннотация: Two glucoamylases, a recombinant enzyme from Penicillium verruculosum (PvGla) heterologously expressed in Penicillium canescens RN3-11-7 (niaD-) strain and a native glucoamylase from Myceliophthora thermophila (MtGla), were purified and their properties were studied. MtGla displayed 2-5-fold higher specific activities against soluble starch, amylose and amylopectin than PvGla. MtGla also provided higher glucose yields in extended hydrolysis of the polymeric substrates. Analysis of 3D model structures of the intact PvGla and MtGla, which were built using the 2vn7.pdb crystal structure of the intact Trichoderma reesei glucoamylase (TrGla) as a template, showed that the reason for lower hydrolytic performance of PvGla in comparison to MtGla may be less strong interactions between the enzyme domains as well as a longer (by 17 residues) linker in the first enzyme.
- Добавил в систему: Гусаков Александр Васильевич