A role for Yin Yang-1 (YY1) in the assembly of snRNA transcription complexes.

Details

Serval ID
serval:BIB_77F220776836
Type
Article: article from journal or magazin.
Collection
Publications
Title
A role for Yin Yang-1 (YY1) in the assembly of snRNA transcription complexes.
Journal
Gene
Author(s)
Emran F., Florens L., Ma B., Swanson S.K., Washburn M.P., Hernandez N.
ISSN
0378-1119[print], 0378-1119[linking]
Publication state
Published
Issued date
2006
Peer-reviewed
Oui
Volume
377
Pages
96-108
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The RNA polymerase (pol) II and III human small nuclear RNA (snRNA) genes have very similar promoters and recruit a number of common factors. In particular, both types of promoters utilize the small nuclear RNA activating protein complex (SNAP(c)) and the TATA box binding protein (TBP) for basal transcription, and are activated by Oct-1. We find that SNAP(c) purified from cell lines expressing tagged SNAP(c) subunits is associated with Yin Yang-1 (YY1), a factor implicated in both activation and repression of transcription. Recombinant YY1 accelerates the binding of SNAP(c) to the proximal sequence element, its target within snRNA promoters. Moreover, it enhances the formation of a complex on the pol III U6 snRNA promoter containing all the factors (SNAP(c), TBP, TFIIB-related factor 2 (Brf2), and B double prime 1 (Bdp1)) that are sufficient to direct in vitro U6 transcription when complemented with purified pol III, as well as that of a subcomplex containing TBP, Brf2, and Bdp1. YY1 is found on both the RNA polymerase II U1 and the RNA polymerase III U6 promoters as determined by chromatin immunoprecipitations. Thus, YY1 represents a new factor that participates in transcription complexes formed on both pol II and III promoters.
Keywords
Animals, Binding Sites/genetics, DNA/genetics, DNA/metabolism, Hela Cells, Humans, Mice, Multiprotein Complexes, Promoter Regions, Genetic, RNA, Small Nuclear/genetics, RNA, Small Nuclear/metabolism, Recombinant Proteins/genetics, Recombinant Proteins/metabolism, Transcription Factors/genetics, Transcription Factors/metabolism, Transcription, Genetic, YY1 Transcription Factor/genetics, YY1 Transcription Factor/metabolism
Pubmed
Web of science
Create date
21/01/2008 17:34
Last modification date
20/08/2019 15:34
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