Analysis of Element Composition of DNA-Protein Crystals In Vitro
- Авторы: Moiseenko A.V.1, Loiko N.G.2,3, Chertkov O.V.1, Feofanov A.V.1,4, Krupyanskii Y.F.3, Sokolova O.S.1
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Учреждения:
- Department of Biology, Moscow State University
- Research Center of Biotechnology, Russian Academy of Sciences
- Semenov Institute of Chemical Physics, Russian Academy of Sciences
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences
- Выпуск: Том 74, № 4 (2019)
- Страницы: 240-245
- Раздел: Research Article
- URL: https://journals.rcsi.science/0096-3925/article/view/173924
- DOI: https://doi.org/10.3103/S0096392519040102
- ID: 173924
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Аннотация
The universal response of Escherichia coli to stress is enhancing the synthesis of specific histone-like Dps proteins that bind bacterial DNA. As a result, two-dimensional and three-dimensional crystalline arrays can be observed in the cytoplasm of starving bacteria. Conditions for obtaining in vitro co-crystals of DNA-Dps were selected, and their elemental composition was studied using analytical electron microscopy. It was found that Dps in the co-crystal retains its ferritin-like activity; that is, it can stimulate the oxidation of Fe2+ ions to Fe3+ and facilitate the accumulation of iron in the form of Fe2O3 in the inner cavity of the oligomer.
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Об авторах
A. Moiseenko
Department of Biology, Moscow State University
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 119234
N. Loiko
Research Center of Biotechnology, Russian Academy of Sciences; Semenov Institute of Chemical Physics, Russian Academy of Sciences
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 119071; Moscow, 117977
O. Chertkov
Department of Biology, Moscow State University
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 119234
A. Feofanov
Department of Biology, Moscow State University; Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 119234; Moscow, 117997
Yu. Krupyanskii
Semenov Institute of Chemical Physics, Russian Academy of Sciences
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 117977
O. Sokolova
Department of Biology, Moscow State University
Автор, ответственный за переписку.
Email: sokolova@mail.bio.msu.ru
Россия, Moscow, 119234
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