Control Of Gene Expression In Xenopus Early Developmentстатья
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Дата последнего поиска статьи во внешних источниках: 24 мая 2016 г.
Авторы:
Hair A.,
M-N Prioleau,
VASSETZKY Y.S. ,
Méchali M.
Журнал:
Developmental genetics
Том:
22
Год издания:
1998
Издательство:
WILEY-LISS
Местоположение издательства:
DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN,USA, NJ, 07030
Первая страница:
122
Последняя страница:
131
DOI:
10.1002/(SICI)1520-6408(1998)22:2<122::AID-DVG2>3.0.CO;2-8
Аннотация:
We examine the control of gene expression before and through the MBT in Xenopus laevis. The generalized repression of transcription that occurs before the midblastula transition (MBT) is regulated by a dynamic competition between chromatin and transcription complex assembly. Conditions favoring the access of basal factors (TBP) or transactivators can overcome this transcriptional repression. Changes in DNase I hypersensitivity patterns of the chromatin during early development show that it is more accessible to DNase I before the MBT (and by extension to other DNA interacting proteins) than after the MBT. We also show that at the level of genomic domains, organization of the chromatin matrix attachment sites is random before MBT. We propose that these three components, chromatin domain structure, DNA accessibility, and the transcription complex-chromatin dynamic competition, combine to regulate transcription in the embryo before and through the MBT. Dev. Genet. 22:122–131, 1998. © 1998 Wiley-Liss, Inc.
Добавил в систему:
Васецкий Егор Сергеевич