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Wild P, Susperregui A, Piazza I, Dörig C, Oke A, Arter M, Yamaguchi M, Hilditch AT, Vuina K, Chan KC, Gromova T, Haber JE, Fung JC, Picotti P, Matos J. Network Rewiring of Homologous Recombination Enzymes during Mitotic Proliferation and Meiosis. Mol Cell 2019; 75:859-874.e4. [PMID: 31351878 PMCID: PMC6715774 DOI: 10.1016/j.molcel.2019.06.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/24/2019] [Accepted: 06/18/2019] [Indexed: 02/06/2023]
Abstract
Homologous recombination (HR) is essential for high-fidelity DNA repair during mitotic proliferation and meiosis. Yet, context-specific modifications must tailor the recombination machinery to avoid (mitosis) or enforce (meiosis) the formation of reciprocal exchanges-crossovers-between recombining chromosomes. To obtain molecular insight into how crossover control is achieved, we affinity purified 7 DNA-processing enzymes that channel HR intermediates into crossovers or noncrossovers from vegetative cells or cells undergoing meiosis. Using mass spectrometry, we provide a global characterization of their composition and reveal mitosis- and meiosis-specific modules in the interaction networks. Functional analyses of meiosis-specific interactors of MutLγ-Exo1 identified Rtk1, Caf120, and Chd1 as regulators of crossing-over. Chd1, which transiently associates with Exo1 at the prophase-to-metaphase I transition, enables the formation of MutLγ-dependent crossovers through its conserved ability to bind and displace nucleosomes. Thus, rewiring of the HR network, coupled to chromatin remodeling, promotes context-specific control of the recombination outcome.
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Affiliation(s)
- Philipp Wild
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Aitor Susperregui
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Ilaria Piazza
- Institute of Molecular Systems Biology, HPM-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Christian Dörig
- Institute of Molecular Systems Biology, HPM-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Ashwini Oke
- Department of Obstetrics, Gynecology, and Reproductive Sciences and Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Meret Arter
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Miyuki Yamaguchi
- Department of Biology and Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA, USA
| | - Alexander T Hilditch
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Karla Vuina
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Ki Choi Chan
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Tatiana Gromova
- Department of Obstetrics, Gynecology, and Reproductive Sciences and Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - James E Haber
- Department of Biology and Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA, USA
| | - Jennifer C Fung
- Department of Obstetrics, Gynecology, and Reproductive Sciences and Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Paola Picotti
- Institute of Molecular Systems Biology, HPM-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Joao Matos
- Institute of Biochemistry, HPM D6.5-ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland.
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Mehta A, Beach A, Haber JE. Homology Requirements and Competition between Gene Conversion and Break-Induced Replication during Double-Strand Break Repair. Mol Cell 2017; 65:515-526.e3. [PMID: 28065599 DOI: 10.1016/j.molcel.2016.12.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/27/2016] [Accepted: 12/01/2016] [Indexed: 11/27/2022]
Abstract
Saccharomyces cerevisiae mating-type switching is initiated by a double-strand break (DSB) at MATa, leaving one cut end perfectly homologous to the HMLα donor, while the second end must be processed to remove a non-homologous tail before completing repair by gene conversion (GC). When homology at the matched end is ≤150 bp, efficient repair depends on the recombination enhancer, which tethers HMLα near the DSB. Thus, homology shorter than an apparent minimum efficient processing segment can be rescued by tethering the donor near the break. When homology at the second end is ≤150 bp, second-end capture becomes inefficient and repair shifts from GC to break-induced replication (BIR). But when pol32 or pif1 mutants block BIR, GC increases 3-fold, indicating that the steps blocked by these mutations are reversible. With short second-end homology, absence of the RecQ helicase Sgs1 promotes gene conversion, whereas deletion of the FANCM-related Mph1 helicase promotes BIR.
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Affiliation(s)
- Anuja Mehta
- Department of Biology and Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA 02454, USA
| | - Annette Beach
- Department of Biology and Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA 02454, USA
| | - James E Haber
- Department of Biology and Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA 02454, USA.
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