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Spatial configuration of the chicken alpha-globin gene domain: immature and active chromatin hubsстатья
Статья опубликована в высокорейтинговом журнале
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: 18 июля 2013 г.
- Авторы: Gavrilov A.A., Razin S.V.
- Журнал: Nucleic Acids Research
- Том: 36
- Номер: 14
- Год издания: 2008
- Издательство: Oxford University Press
- Местоположение издательства: United Kingdom
- Первая страница: 4629
- Последняя страница: 4640
- DOI: 10.1093/nar/gkn429
- Аннотация: The spatial configuration of the chicken alpha-globin gene domain in erythroid and lymphoid cells was studied by using the Chromosome Conformation Capture (3C) approach. Real-time PCR with TaqMan probes was employed to estimate the frequencies of cross-linking of different restriction fragments within the domain. In differentiated cultured erythroblasts and in 10-day chick embryo erythrocytes expressing ’adult’ alpha(A) and alpha(D) globin genes the following elements of the domain were found to form an ’active’ chromatin hub: upstream Major Regulatory Element (MRE), -9 kb upstream DNase I hypersensitive site (DHS), -4 kb upstream CpG island, alpha(D) gene promoter and the downstream enhancer. The alpha(A) gene promoter was not present in the ’active’ chromatin hub although the level of alpha(A) gene transcription exceeded that of the alpha(D) gene. Formation of the ’active’ chromatin hub was preceded by the assembly of multiple incomplete hubs containing MRE in combination with either -9 kb DHS or other regulatory elements of the domain. These incomplete chromatin hubs were present in proliferating cultured erythroblasts which did not express globin genes. In lymphoid cells only the interaction between the alpha(D) promoter and the CpG island was detected.
- Добавил в систему: Разин Сергей Владимирович