Diagenode

Transcription independent insulation at TFIIIC-dependent insulators.


Valenzuela L, Dhillon N, Kamakaka RT

Chromatin insulators separate active from repressed chromatin domains. In yeast the RNA pol III transcription machinery bound to tRNA genes function with histone acetylases and chromatin remodelers to restrict the spread of heterochromatin. Our results collectively demonstrate that binding of TFIIIC is necessary for insulation but binding of TFIIIB along with TFIIIC likely improves the probability of complex formation at an insulator. Insulation by this transcription factor occurs in the absence of RNA polymerase III or polymerase II but requires specific histone acetylases and chromatin remodelers. This analysis identifies a minimal set of factors required for insulation.

Tags
Bioruptor
Chromatin Shearing
ChIP-qPCR

Share this article

Published
September, 2009

Source

Events

 See all events

Twitter feed

News

 See all news