Ontology highlight
ABSTRACT:
SUBMITTER: Blattner C
PROVIDER: S-EPMC3197207 | biostudies-literature | 2011 Oct
REPOSITORIES: biostudies-literature
Genes & development 20110922 19
Cell growth is regulated during RNA polymerase (Pol) I transcription initiation by the conserved factor Rrn3/TIF-IA in yeast/humans. Here we provide a structure-function analysis of Rrn3 based on a combination of structural biology with in vivo and in vitro functional assays. The Rrn3 crystal structure reveals a unique HEAT repeat fold and a surface serine patch. Phosphorylation of this patch represses human Pol I transcription, and a phospho-mimetic patch mutation prevents Rrn3 binding to Pol I ...[more]