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Updated: Aug 12, 2026

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
Published on: August 9, 2019
Who's on first? The U1 snRNP-5' splice site interaction and splicing
1Howard Hughes Medical Institute, Department of Biology, Brandeis University, Waltham, MA 02254.
Abstract:
U1 small nuclear ribonucleoprotein (snRNP) is important for pre-mRNA splicing both in yeast (Saccharomyces cerevisiae) and mammalian systems. The RNA component of U1 snRNP, U1 snRNA, interacts by base pairing with pre-mRNA 5' splice sites. This article examines recent evidence suggesting that U1 snRNP is important for an early step in spliceosome assembly rather than a late step that contributes to the specificity of 5' splice-site cleavage.
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