Enhancer transcription: what, where, when, and why?
Genes Dev
; 32(1): 1-3, 2018 01 01.
Article
em En
| MEDLINE
| ID: mdl-29440223
ABSTRACT
Following the discovery of widespread enhancer transcription, enhancers and promoters have been found to be far more similar than previously thought. In this issue of Genes & Development, two studies (Henriques and colleagues [pp. 26-41] and Mikhaylichenko and colleagues [pp. 42-57]) shine new light on the transcriptional nature of promoters and enhancers in Drosophila Together, these studies support recent work in mammalian cells that indicates that most active enhancers drive local transcription using factors and mechanisms similar to those of promoters. Intriguingly, enhancer transcription is shown to be coordinated by SPT5- and P-TEFb-mediated pause-release, but the pause half-life is shorter, and termination is more rapid at enhancers than at promoters. Moreover, bidirectional transcription from promoters is associated with enhancer activity, lending further credence to models in which regulatory elements exist along a spectrum of promoter-ness and enhancer-ness. We propose a general unified model to explain possible functions of transcription at enhancers.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Elementos Facilitadores Genéticos
/
Drosophila
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Genes Dev
Ano de publicação:
2018
Tipo de documento:
Article