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Abstract
Nuclear pore complexes (NPCs) are sophisticated multiprotein assemblies embedded within the nuclear envelope and controlling the exchanges of molecules between the cytoplasm and the nucleus. In this review, we summarize the mechanisms by which these elaborate complexes are built from their subunits, the nucleoporins, based on our ever-growing knowledge of NPC structural organization and on the recent identification of additional features of this process. We present the constraints faced during the production of nucleoporins, their gathering into oligomeric complexes, and the formation of NPCs within nuclear envelopes, and review the cellular strategies at play, from co-translational assembly to the enrolment of a panel of cofactors. Remarkably, the study of NPCs can inform our perception of the biogenesis of multiprotein complexes in general - and vice versa.
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Affiliation(s)
- Arianna Penzo
- Université Paris Cité, CNRS, Institut Jacques Monod, Paris, France
| | - Benoit Palancade
- Université Paris Cité, CNRS, Institut Jacques Monod, Paris, France
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Lautier O, Penzo A, Rouvière JO, Chevreux G, Collet L, Loïodice I, Taddei A, Devaux F, Collart MA, Palancade B. Co-translational assembly and localized translation of nucleoporins in nuclear pore complex biogenesis. Mol Cell 2021; 81:2417-2427.e5. [PMID: 33838103 DOI: 10.1016/j.molcel.2021.03.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/24/2021] [Accepted: 03/18/2021] [Indexed: 01/03/2023]
Abstract
mRNA translation is coupled to multiprotein complex assembly in the cytoplasm or to protein delivery into intracellular compartments. Here, by combining systematic RNA immunoprecipitation and single-molecule RNA imaging in yeast, we have provided a complete depiction of the co-translational events involved in the biogenesis of a large multiprotein assembly, the nuclear pore complex (NPC). We report that binary interactions between NPC subunits can be established during translation, in the cytoplasm. Strikingly, the nucleoporins Nup1/Nup2, together with a number of nuclear proteins, are instead translated at nuclear pores, through a mechanism involving interactions between their nascent N-termini and nuclear transport receptors. Uncoupling this co-translational recruitment further triggers the formation of cytoplasmic foci of unassembled polypeptides. Altogether, our data reveal that distinct, spatially segregated modes of co-translational interactions foster the ordered assembly of NPC subunits and that localized translation can ensure the proper delivery of proteins to the pore and the nucleus.
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Affiliation(s)
- Ophélie Lautier
- Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
| | - Arianna Penzo
- Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
| | - Jérôme O Rouvière
- Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
| | - Guillaume Chevreux
- ProteoSeine@IJM, Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
| | - Louis Collet
- Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
| | - Isabelle Loïodice
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, UMR3664 Nuclear Dynamics, Paris, France
| | - Angela Taddei
- Institut Curie, PSL Research University, CNRS, Sorbonne Université, UMR3664 Nuclear Dynamics, Paris, France
| | - Frédéric Devaux
- Sorbonne Université, CNRS, Institut de biologie Paris-Seine (IBPS), UMR 7238, Laboratoire de biologie computationnelle et quantitative, LCQB, 4 place Jussieu, 75005 Paris, France
| | - Martine A Collart
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Benoit Palancade
- Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France.
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3
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Visweshwaran SP, Thomason PA, Guerois R, Vacher S, Denisov EV, Tashireva LA, Lomakina ME, Lazennec-Schurdevin C, Lakisic G, Lilla S, Molinie N, Henriot V, Mechulam Y, Alexandrova AY, Cherdyntseva NV, Bièche I, Schmitt E, Insall RH, Gautreau A. The trimeric coiled-coil HSBP1 protein promotes WASH complex assembly at centrosomes. EMBO J 2018; 37:e97706. [PMID: 29844016 PMCID: PMC6028030 DOI: 10.15252/embj.201797706] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 04/23/2018] [Accepted: 04/25/2018] [Indexed: 12/11/2022] Open
Abstract
The Arp2/3 complex generates branched actin networks that exert pushing forces onto different cellular membranes. WASH complexes activate Arp2/3 complexes at the surface of endosomes and thereby fission transport intermediates containing endocytosed receptors, such as α5β1 integrins. How WASH complexes are assembled in the cell is unknown. Here, we identify the small coiled-coil protein HSBP1 as a factor that specifically promotes the assembly of a ternary complex composed of CCDC53, WASH, and FAM21 by dissociating the CCDC53 homotrimeric precursor. HSBP1 operates at the centrosome, which concentrates the building blocks. HSBP1 depletion in human cancer cell lines and in Dictyostelium amoebae phenocopies WASH depletion, suggesting a critical role of the ternary WASH complex for WASH functions. HSBP1 is required for the development of focal adhesions and of cell polarity. These defects impair the migration and invasion of tumor cells. Overexpression of HSBP1 in breast tumors is associated with increased levels of WASH complexes and with poor prognosis for patients.
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Affiliation(s)
- Sai P Visweshwaran
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | | | - Raphael Guerois
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Sophie Vacher
- Pharmacogenomics Unit, Department of Genetics, Institut Curie, Paris, France
| | - Evgeny V Denisov
- Laboratory of Molecular Oncology and Immunology, Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
- Laboratory for Translational Cellular and Molecular Biomedicine, Tomsk State University, Tomsk, Russia
| | - Lubov A Tashireva
- Department of General and Molecular Pathology, Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - Maria E Lomakina
- Institute of Carcinogenesis, N.N. Blokhin Cancer Research Center, Moscow, Russia
| | | | - Goran Lakisic
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | - Sergio Lilla
- Beatson Institute for Cancer Research, Bearsden, UK
| | - Nicolas Molinie
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | - Veronique Henriot
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | - Yves Mechulam
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | | | - Nadezhda V Cherdyntseva
- Laboratory of Molecular Oncology and Immunology, Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - Ivan Bièche
- Pharmacogenomics Unit, Department of Genetics, Institut Curie, Paris, France
| | - Emmanuelle Schmitt
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
| | | | - Alexis Gautreau
- Ecole Polytechnique, CNRS UMR7654, Université Paris-Saclay, Palaiseau, France
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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