Transitions in RNA polymerase II elongation complexes at the 3′ ends of genes

Minkyu Kim, Seong Hoon Ahn, Nevan J. Krogan, Jack F. Greenblatt, Stephen Buratowski

Research output: Contribution to journalArticlepeer-review

248 Scopus citations

Abstract

To understand the factor interactions of transcribing RNA polymerase II (RNApII) in vivo, chromatin immunoprecipitations were used to map the crosslinking patterns of multiple elongation and polyadenylation factors across transcribed genes. Transcription through the polyadenylation site leads to a reduction in the levels of the Ctk1 kinase and its associated phosphorylation of the RNApII C-terminal domain. One group of elongation factors (Spt4/5, Spt6/Iws1, and Spt16/Pob3), thought to mediate transcription through chromatin, shows patterns matching that of RNApII. In contrast, the Paf and TREX/THO complexes partially overlap RNApII, but do not crosslink to transcribed regions downstream of polyadenylation sites. In a complementary pattern, polyadenylation factors crosslink strongly at the 3′ ends of genes. Mutation of the 3′ polyadenylation sequences or the Rna14 protein causes loss of polyadenylation factor crosslinking and read-through of termination sequences. Therefore, transcription termination and polyadenylation involve transitions at the 3′ end of genes that may include an exchange of elongation and polyadenylation/termination factors.

Original languageEnglish (US)
Pages (from-to)354-364
Number of pages11
JournalEMBO Journal
Volume23
Issue number2
DOIs
StatePublished - Jan 28 2004
Externally publishedYes

Keywords

  • Polyadenylation
  • RNA polymerase II CTD
  • Termination
  • Transcription

ASJC Scopus subject areas

  • General Neuroscience
  • Molecular Biology
  • General Biochemistry, Genetics and Molecular Biology
  • General Immunology and Microbiology

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