Back to Search
Start Over
Genome-wide analysis of alternative pre-mRNA splicing and RNA-binding specificities of the Drosophila hnRNP A/B family members.
- Source :
-
Molecular cell [Mol Cell] 2009 Feb 27; Vol. 33 (4), pp. 438-49. - Publication Year :
- 2009
-
Abstract
- Heterogeneous nuclear ribonucleoproteins (hnRNPs) have been traditionally seen as proteins packaging RNA nonspecifically into ribonucleoprotein particles (RNPs), but evidence suggests specific cellular functions on discrete target pre-mRNAs. Here we report genome-wide analysis of alternative splicing patterns regulated by four Drosophila homologs of the mammalian hnRNP A/B family (hrp36, hrp38, hrp40, and hrp48). Analysis of the global RNA-binding distributions of each protein revealed both small and extensively bound regions on target transcripts. A significant subset of RNAs were bound and regulated by more than one hnRNP protein, revealing a combinatorial network of interactions. In vitro RNA-binding site selection experiments (SELEX) identified distinct binding motif specificities for each protein, which were overrepresented in their respective regulated and bound transcripts. These results indicate that individual heterogeneous ribonucleoproteins have specific affinities for overlapping, but distinct, populations of target pre-mRNAs controlling their patterns of RNA processing.
- Subjects :
- Animals
Base Sequence
Binding Sites
Cells, Cultured
Drosophila metabolism
Molecular Sequence Data
RNA Precursors genetics
Alternative Splicing genetics
Drosophila genetics
Genome, Insect
Heterogeneous-Nuclear Ribonucleoprotein Group A-B genetics
Heterogeneous-Nuclear Ribonucleoprotein Group A-B metabolism
RNA Precursors metabolism
RNA, Messenger metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1097-4164
- Volume :
- 33
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Molecular cell
- Publication Type :
- Academic Journal
- Accession number :
- 19250905
- Full Text :
- https://doi.org/10.1016/j.molcel.2009.01.022