Diagenode

The Spt5 C-terminal region recruits yeast 3’-RNA cleavage factor I


Mayer A, Schreieck A, Lidschreiber M, Leike K, Martin DE, Cramer1 P

During transcription elongation, RNA polymerase (Pol) II binds the general elongation factor Spt5. Spt5 contains a repetitive C-terminal region (CTR) that is required for co-transcriptional recruitment of the Paf1 complex (44, 88). Here we report a new role of the Spt5 CTR in the recruitment of 3’-RNA processing factors. Chromatin immunoprecipitation (ChIP) reveals that the Spt5 CTR is required for normal recruitment of the pre-mRNA cleavage factor (CF) I to the 3’-end of yeast genes. RNA contributes to CFI recruitment, as RNase treatment prior to ChIP further decreases CFI ChIP signals. Genome-wide ChIP profiling detects occupancy peaks of CFI subunits around 100 nucleotides downstream of the poly-adenylation (pA) site of genes. CFI recruitment to this defined region may result from simultaneous binding to the Spt5 CTR, to nascent RNA containing the pA sequence, and to the elongating Pol II isoform that is phosphorylated at serine 2 (S2) residues in its C-terminal domain (CTD). Consistent with this model, the CTR interacts with CFI in vitro, but is not required for pA site recognition and transcription termination in vivo.

Tags
Chromatin Shearing
ChIP-qPCR

Share this article

Published
January, 2012

Source

Events

  • AACR 2024
    San Diego, California, USA
    Apr 5-Apr 10, 2024
 See all events

News

 See all news


The European Regional Development Fund and Wallonia are investing in your future.

Extension of industrial buildings and new laboratories.


       Site map   |   Contact us   |   Conditions of sales   |   Conditions of purchase   |   Privacy policy   |   Diagenode Diagnostics