Yudkovsky N, et al. (2000) A transcription reinitiation intermediate that is stabilized by activator. Nature 408(6809):225-9
Abstract: High levels of gene transcription by RNA polymerase II depend on high rates of transcription initiation and reinitiation. Initiation requires recruitment of the complete transcription machinery to a promoter, a process facilitated by activators and chromatin remodelling factors. Reinitiation probably occurs through a different pathway. After initiation, a subset of the transcription machinery remains at the promoter, forming a platform for assembly of a second transcription complex. Here we describe the isolation of a reinitiation intermediate that includes transcription factors TFIID, TFIIA, TFIIH, TFIIE and Mediator. This intermediate can act as a scaffold for formation of a functional reinitiation complex. Formation of this scaffold is dependent on ATP and TFIIH. The scaffold is stabilized in the presence of the activator Gal4-VP16, but not Gal4-AH, suggesting a new role for some activators and Mediator in promoting high levels of transcription.
|Status: Published||Type: Journal Article||PubMed ID: 11089979|
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