ArticleNucleic acids research2015
Brr2 plays a role in spliceosomal activation in addition to U4/U6 unwinding.
Article in Nucleic acids research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 29 citations in OpenAlex.
- The splicing factor BRR2a functions as a repressor of stress-inducible genes.Stress biology · 2026Article
- GPATCH11 ortholog Sap34 regulates pre-mRNA splicing by interacting with early spliceosomal complexes in Schizosaccharomyces pombe.Scientific reports · 2026Article
- The landscape of variants in pre-mRNA-processing factor genes in an Irish cohort.Genetics in medicine open · 2026Article
- Dual roles of DEAD-box RNA helicase Brr2 in genome stability regulation.Nature communications · 2025Article
- PRPF8-mediated dysregulation of hBrr2 helicase disrupts human spliceosome kinetics and 5´-splice-site selection causing tissue-specific defects.Nature communications · 2024Article
- Evolutionary and functional insights into the Ski2-like helicase family in Archaea: a comparison of Thermococcales ASH-Ski2 and Hel308 activities.NAR genomics and bioinformatics · 2024Article
- A forward genetic screen in C. elegans identifies conserved residues of spliceosomal proteins PRP8 and SNRNP200/BRR2 with a role in maintaining 5' splice site identity.Nucleic acids research · 2022Article
- Review
- The ChloroplastCells · 2021Review
- Structural and functional analyses of the spliceosome requires a multi-disciplinary approach.Methods (San Diego, Calif.) · 2017Article
- RNA and Proteins: Mutual Respect.F1000Research · 2017Review
- Functions and regulation of the Brr2 RNA helicase during splicing.Cell cycle (Georgetown, Tex.) · 2016Review
- Retinitis Pigmentosa Mutations in Bad Response to Refrigeration 2 (Brr2) Impair ATPase and Helicase Activity.The Journal of biological chemistry · 2016Article
- Prp8 retinitis pigmentosa mutants cause defects in the transition between the catalytic steps of splicing.RNA (New York, N.Y.) · 2016Article
- FgPrp4 Kinase Is Important for Spliceosome B-Complex Activation and Splicing Efficiency in Fusarium graminearum.PLoS genetics · 2016Article
- Structural Analysis of Multi-Helical RNAs by NMR-SAXS/WAXS: Application to the U4/U6 di-snRNA.Journal of molecular biology · 2016Article
- The large N-terminal region of the Brr2 RNA helicase guides productive spliceosome activation.Genes & development · 2015Article
- RNA-Binding Proteins: Splicing Factors and Disease.Biomolecules · 2015Review
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
Abstract
Brr2 is a DExD/H-box RNA helicase that is responsible for U4/U6 unwinding, a critical step in spliceosomal activation. Brr2 is a large protein (∼250 kD) that consists of an N-terminal domain (∼500 residues) with unknown function and two Hel308-like modules that are responsible for RNA unwinding. Here we demonstrate that removal of the entire N-terminal domain is lethal to Saccharomyces cerevisiae and deletion of the N-terminal 120 residues leads to splicing defects and severely impaired growth. This N-terminal truncation does not significantly affect Brr2's helicase activity. Brr2-Δ120 can be successfully assembled into the tri-snRNP (albeit at a lower level than the WT Brr2) and the spliceosomal B complex. However, the truncation significantly impairs spliceosomal activation, leading to a dramatic reduction of U5, U6 snRNAs and accumulation of U1 snRNA in the B(act) complex. The N-terminal domain of Brr2 does not seem to be directly involved in regulating U1/5'ss unwinding. Instead, the N-terminal domain seems to be critical for retaining U5 and U6 snRNPs during/after spliceosomal activation through its interaction with snRNAs and possibly other spliceosomal proteins, revealing a new role of Brr2 in spliceosomal activation in addition to U4/U6 unwinding.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.