Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Mol Cell. 2008 Dec 5;32(5):727-34. doi: 10.1016/j.molcel.2008.11.013.

A single SR-like protein, Npl3, promotes pre-mRNA splicing in budding yeast.

Author information

  • 1Department of Biochemistry and Biophysics, University of California, San Francisco, 600 16th Street, Genentech Hall, San Francisco, CA 94143, USA.

Abstract

Mammalian SR proteins are a family of reversibly phosphorylated RNA binding proteins primarily studied for their roles in alternative splicing. While budding yeast lack alternative splicing, they do have three SR-like proteins: Npl3, Gbp2, and Hrb1. However, these have been best characterized for their roles in mRNA export, leaving their potential roles in splicing largely unexplored. Here, we combined high-density genetic interaction profiling and genome-wide splicing-sensitive microarray analysis to demonstrate that a single SR-like protein, Npl3, is required for efficient splicing of a large set of pre-mRNAs in Saccharomyces cerevisiae. We tested the hypothesis that Npl3 promotes splicing by facilitating cotranscriptional recruitment of splicing factors. Using chromatin immunoprecipitation, we showed that mutation of NPL3 reduces the occupancy of U1 and U2 snRNPs at genes whose splicing is stimulated by Nbl3. This result provides strong evidence that an SR protein can promote recruitment of splicing factors to chromatin.

PMID:
19061647
[PubMed - indexed for MEDLINE]
PMCID:
PMC2677966
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for PubMed Central
    Loading ...
    Write to the Help Desk