論文 - 詳細
| RRC ID | 56166 |
|---|---|
| 著者 | Hernandez MR, Davis MB, Jiang J, Brouhard EA, Severson AF, Csankovszki G. |
| タイトル | Condensin I protects meiotic cohesin from WAPL-1 mediated removal. |
| ジャーナル | PLoS Genet |
| Abstract |
Condensin complexes are key determinants of higher-order chromatin structure and are required for mitotic and meiotic chromosome compaction and segregation. We identified a new role for condensin in the maintenance of sister chromatid cohesion during C. elegans meiosis. Using conventional and stimulated emission depletion (STED) microscopy we show that levels of chromosomally-bound cohesin were significantly reduced in dpy-28 mutants, which lack a subunit of condensin I. SYP-1, a component of the synaptonemal complex central region, was also diminished, but no decrease in the axial element protein HTP-3 was observed. Surprisingly, the two key meiotic cohesin complexes of C. elegans were both depleted from meiotic chromosomes following the loss of condensin I, and disrupting condensin I in cohesin mutants increased the frequency of detached sister chromatids. During mitosis and meiosis in many organisms, establishment of cohesion is antagonized by cohesin removal by Wapl, and we found that condensin I binds to C. elegans WAPL-1 and counteracts WAPL-1-dependent cohesin removal. Our data suggest that condensin I opposes WAPL-1 to promote stable binding of cohesin to meiotic chromosomes, thereby ensuring linkages between sister chromatids in early meiosis. |
| 巻・号 | 14(5) |
| ページ | e1007382 |
| 公開日 | 2018-5-1 |
| DOI | 10.1371/journal.pgen.1007382 |
| PII | PGENETICS-D-17-01853 |
| PMID | 29768402 |
| PMC | PMC5973623 |
| MeSH | Adenosine Triphosphatases / genetics Adenosine Triphosphatases / metabolism* Animals Caenorhabditis elegans / genetics Caenorhabditis elegans / metabolism Caenorhabditis elegans Proteins / genetics Caenorhabditis elegans Proteins / metabolism* Cell Cycle Proteins / genetics Cell Cycle Proteins / metabolism* Chromatids / genetics Chromatids / metabolism Chromosomal Proteins, Non-Histone / genetics Chromosomal Proteins, Non-Histone / metabolism* Chromosome Segregation / genetics DNA-Binding Proteins / genetics DNA-Binding Proteins / metabolism* In Situ Hybridization, Fluorescence Intercellular Signaling Peptides and Proteins / genetics Intercellular Signaling Peptides and Proteins / metabolism* Meiosis / genetics* Multiprotein Complexes / genetics Multiprotein Complexes / metabolism* Mutation Nuclear Proteins / genetics Nuclear Proteins / metabolism* RNA Interference Synaptonemal Complex / genetics Synaptonemal Complex / metabolism |
| IF | 5.224 |
| 引用数 | 5 |
| リソース情報 | |
| 線虫 | tm3535 tm1857 tm1814 |