AP-site does not introduce significant distortions into the DNA structure in the nucleosomes in vitro
- Авторлар: Kutuzov M.M.1, Belousova E.A.1, Dreiman V.M.1, Lavrik O.I.1
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Мекемелер:
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences
- Шығарылым: Том 90, № 8 (2025)
- Беттер: 1219-1228
- Бөлім: Articles
- URL: https://bakhtiniada.ru/0320-9725/article/view/356276
- DOI: https://doi.org/10.31857/S0320972525080118
- EDN: https://elibrary.ru/VCRGTP
- ID: 356276
Дәйексөз келтіру
Аннотация
DNA damage results in distortion of the B-form structure of the double DNA helix. Recognition of such distortion by DNA repair proteins is an important stage in the process initiation. The nucleosome structure imposes restrictions on the mobility and plasticity of the DNA geometry. Under interaction of repair proteins with nucleosomal DNA, the main issue is the implementation of the DNA structure that characterize the damage itself in a specific context. In addition, the DNA duplex in the nucleosome has a regular profile of contacts with histones corresponding to the turn of the DNA helix. By changing this profile, one can judge about changes in the DNA structure. This profile correlates with the availability of the corresponding nucleotides for interaction with DNA-binding proteins. In our work, using the footprinting assay, it was shown that the presence of an AP site within the second-third turn from the 5'-end of the nucleosomal DNA does not significantly affect the profile of DNA contacts with histones.
Негізгі сөздер
Авторлар туралы
M. Kutuzov
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences
Email: lavrik@niboch.nsc.ru
Novosibirsk
E. Belousova
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences
Email: lavrik@niboch.nsc.ru
Novosibirsk
V. Dreiman
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences
Email: lavrik@niboch.nsc.ru
Novosibirsk
O. Lavrik
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: lavrik@niboch.nsc.ru
Novosibirsk
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