title: U1 snRNA rewrites the "script".
abstract: Expression of eukaryotic mRNAs requires the collaboration of a host of RNA processing factors acting upon the transcript. Berg et al. describe how a pre-mRNA splicing factor modulates the activity of the polyadenylation machinery to regulate mRNA length, with important implications for isoform expression in activated neuronal and immune cells.
authors: Evan C
authors: EC
authors: Merkhofer
authors: Tracy L
authors: TL
authors: Johnson