Функциональная роль с-концевых доменов белка msl2 drosophila melanogaster
- Авторы: Тихонова Е.А.1, Георгиев П.Г.1, Максименко О.Г.1
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Учреждения:
- ФГБУН Институт биологии гена РАН
- Выпуск: Том 89, № 4 (2024)
- Страницы: 623-634
- Раздел: Статьи
- URL: https://rjeid.com/0320-9725/article/view/665769
- DOI: https://doi.org/10.31857/S0320972524040069
- EDN: https://elibrary.ru/ZFLNSA
- ID: 665769
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Аннотация
Комплекс дозовой компенсации, состоящий из пяти белков и двух некодирующих РНК roX, специфично связывается с Х-хромосомой самцов, обеспечивая более высокий уровень экспрессии генов, что необходимо для компенсации моносомии половой хромосомы у самцов дрозофилы по сравнению с двумя Х-хромосомами самок. Белок MSL2 содержит N-концевой RING-домен, выполняющий роль Е3-лигазы при убиквитинировании белков, и является единственной субъединицей комплекса, которая экспрессируется только у самцов. В работе проведено исследование функциональной роли двух C-концевых доменов белка MSL2, обогащенных пролином (Р-домен) и основными аминокислотами (B-домен). В результате было показано, что В-домен дестабилизирует белок MSL2, что связано с наличием двух лизинов, убиквитинирование которых находится под контролем RING-домена MSL2. Неструктурированный пролин-богатый домен стимулирует транскрипцию гена roХ2, что необходимо для эффективного формирования комплекса дозовой компенсации.
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Об авторах
Е. А. Тихонова
ФГБУН Институт биологии гена РАН
Автор, ответственный за переписку.
Email: maksog@mail.ru
Россия, Москва
П. Г. Георгиев
ФГБУН Институт биологии гена РАН
Email: maksog@mail.ru
Россия, Москва
О. Г. Максименко
ФГБУН Институт биологии гена РАН
Email: maksog@mail.ru
Россия, Москва
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