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RNA-binding proteins: it's better to play in a band
Joshua Jeong1, Klemens J Hertel1, Yongsheng Shi2
1Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, California 92697, USA.
Genes & Development
|February 12, 2025
Summary
Researchers discovered how the LASR complex, a group of RNA-binding proteins (RBPs), regulates alternative splicing (AS) by recognizing complex sequences. This finding is key to understanding how multiple RBPs work together to control gene expression.
Area of Science:
- Molecular Biology
- Genetics
- Gene Regulation
Background:
- Alternative splicing (AS) is a crucial process for generating protein diversity.
- Most studies focus on individual RNA-binding proteins (RBPs) and their roles in AS.
- The combinatorial effects of multiple RBPs in regulating AS remain largely unexplored.
Purpose of the Study:
- To investigate the mechanism by which the LASR complex, comprising multiple RBPs, regulates alternative splicing.
- To understand how the LASR complex recognizes multipart sequences to control AS.
- To provide a framework for studying the coordinated action of other RBPs in splicing regulation.
Main Methods:
- Characterization of the LASR complex and its components.
- Analysis of the RNA sequences recognized by the LASR complex.
- Investigating the functional impact of the LASR complex on alternative splicing patterns.
Main Results:
- The LASR complex, composed of multiple RBPs, was identified as a key regulator of alternative splicing.
- The complex recognizes specific multipart sequences on pre-mRNA.
- This recognition mechanism dictates alternative splicing outcomes.
Conclusions:
- The LASR complex provides a model for understanding how multiple RBPs cooperate to regulate alternative splicing.
- The study advances our understanding of the splicing code by revealing combinatorial RBP action.
- The developed approach can be extended to study other RBP complexes and their roles in gene regulation.
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