Treffer: RBBP6 anchors pre-mRNA 3' end processing to nuclear speckles for efficient gene expression.

Title:
RBBP6 anchors pre-mRNA 3' end processing to nuclear speckles for efficient gene expression.
Authors:
Yoon Y; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Bournique E; Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Soles LV; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Yin H; Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA., Chu HF; Department of Biological Sciences, Columbia University, New York, NY 10027, USA., Yin C; Department of Electrical and Computer Engineering, University of Washington, Seattle, Seattle, WA 98195, USA., Zhuang Y; Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA., Liu X; Department of Biological Sciences, Columbia University, New York, NY 10027, USA., Liu L; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Jeong J; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Yu C; Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697, USA., Valdez M; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Tian L; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Huang L; Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697, USA., Shi X; Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA; Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA; Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA., Seelig G; Department of Electrical and Computer Engineering, University of Washington, Seattle, Seattle, WA 98195, USA; Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, Seattle, WA 98195, USA., Ding F; Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA., Tong L; Department of Biological Sciences, Columbia University, New York, NY 10027, USA., Buisson R; Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA., Shi Y; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA. Electronic address: yongshes@uci.edu.
Source:
Molecular cell [Mol Cell] 2025 Feb 06; Vol. 85 (3), pp. 555-570.e8. Date of Electronic Publication: 2025 Jan 10.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Cell Press Country of Publication: United States NLM ID: 9802571 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1097-4164 (Electronic) Linking ISSN: 10972765 NLM ISO Abbreviation: Mol Cell Subsets: MEDLINE
Imprint Name(s):
Publication: Cambridge Ma : Cell Press
Original Publication: Cambridge, Mass. : Cell Press, c1997-
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Grant Information:
R21 AI185033 United States AI NIAID NIH HHS; DP2 GM150017 United States GM NIGMS NIH HHS; R35 GM149294 United States GM NIGMS NIH HHS; R21 ES036190 United States ES NIEHS NIH HHS; P30 CA062203 United States CA NCI NIH HHS; R35 GM118093 United States GM NIGMS NIH HHS; R37 CA252081 United States CA NCI NIH HHS; R01 AI170840 United States AI NIAID NIH HHS; S10 OD032327 United States OD NIH HHS; R35 GM145249 United States GM NIGMS NIH HHS
Contributed Indexing:
Keywords: biomolecular condensate; cleavage and polyadenylation; gene expression; intrinsically disordered region; membraneless organelle; nuclear speckle; phase separation; pre-mRNA 3′ end processing; transcription termination
Substance Nomenclature:
0 (RNA Precursors)
EC 2.7.7.- (RNA Polymerase II)
0 (RNA, Messenger)
0 (Intrinsically Disordered Proteins)
0 (RNA-Binding Proteins)
Entry Date(s):
Date Created: 20250111 Date Completed: 20250430 Latest Revision: 20250722
Update Code:
20250722
PubMed Central ID:
PMC11805622
DOI:
10.1016/j.molcel.2024.12.016
PMID:
39798570
Database:
MEDLINE

Weitere Informationen

Pre-mRNA 3' processing is an integral step in mRNA biogenesis. However, where this process occurs in the nucleus remains unknown. Here, we demonstrate that nuclear speckles (NSs), membraneless organelles enriched with splicing factors, are major sites for pre-mRNA 3' processing in human cells. We show that the essential pre-mRNA 3' processing factor retinoblastoma-binding protein 6 (RBBP6) associates strongly with NSs via its C-terminal intrinsically disordered region (IDR). Importantly, although the conserved N-terminal domain (NTD) of RBBP6 is sufficient for pre-mRNA 3' processing in vitro, its IDR-mediated association with NSs is required for efficient pre-mRNA 3' processing in cells. Through proximity labeling analyses, we provide evidence that pre-mRNA 3' processing for over 50% of genes occurs near NSs. We propose that NSs serve as hubs for RNA polymerase II transcription, pre-mRNA splicing, and 3' processing, thereby enhancing the efficiency and coordination of different gene expression steps.
(Copyright © 2024 Elsevier Inc. All rights reserved.)

Declaration of interests The authors declare no competing interests.