Genome-associated RNA polymerase II includes the dissociable Rpb4/7 subcomplex.

ABSTRACT: Yeast RNA polymerase (Pol) II consists of a 10-subunit core enzyme and the Rpb4/7 subcomplex, which is dispensable for catalytic activity and dissociates in vitro. To investigate whether Rpb4/7 is an integral part of DNA-associated Pol II in vivo, we used chromatin immunoprecipitation coupled to high resolution tiling microarray analysis. We show that the genome-wide occupancy profiles for Rpb7 and the core subunit Rpb3 are essentially identical. Thus, the complete Pol II associates with DNA in vivo, consistent with functional roles of Rpb4/7 throughout the transcription cycle.

SUBMITTER: Jasiak AJ 

PROVIDER: S-EPMC3258907 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature