El factor de alargamiento del ARN Pol II Ell3 marca los potenciadores en las células ES y inicia la activación de

Chengqi Lin1, Alexander S Garruss, Zhuojuan Luo

  • 1Stowers Institute for Medical Research, 1000 East 50th Street, Kansas City, MO 64110, USA.

Cell
|January 1, 2013
PubMed
Resumen

La proteína Ell3 marca potenciadores en las células madre embrionarias, cruciales para la regulación génica durante el desarrollo. Este hallazgo sugiere un papel para los factores de transcripción en la iniciación de la expresión génica temprana en el desarrollo.

Videos de Conceptos Relacionados

RNA Polymerase II Accessory Proteins02:36

RNA Polymerase II Accessory Proteins

Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
8.9K
Transcription Elongation Factors02:35

Transcription Elongation Factors

Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA...
11.2K