論文

査読有り
2022年4月22日

Rec8 Cohesin-mediated Axis-loop chromatin architecture is required for meiotic recombination

Nucleic Acids Research
  • Takeshi Sakuno
  • ,
  • Sanki Tashiro
  • ,
  • Hideki Tanizawa
  • ,
  • Osamu Iwasaki
  • ,
  • Da-Qiao Ding
  • ,
  • Tokuko Haraguchi
  • ,
  • Ken-ichi Noma
  • ,
  • Yasushi Hiraoka

50
7
開始ページ
3799
終了ページ
3816
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/nar/gkac183
出版者・発行元
OXFORD UNIV PRESS

During meiotic prophase, cohesin-dependent axial structures are formed in the synaptonemal complex (SC). However, the functional correlation between these structures and cohesion remains elusive. Here, we examined the formation of cohesin-dependent axial structures in the fission yeast Schizosaccharomyces pombe. This organism forms atypical SCs composed of linear elements (LinEs) resembling the lateral elements of SC but lacking the transverse filaments. Hi-C analysis using a highly synchronous population of meiotic S. pombe cells revealed that the axis-loop chromatin structure formed in meiotic prophase was dependent on the Rec8 cohesin complex. In contrast, the Rec8-mediated formation of the axis-loop structure occurred in cells lacking components of LinEs. To dissect the functions of Rec8, we identified a rec8-F204S mutant that lost the ability to assemble the axis-loop structure without losing cohesion of sister chromatids. This mutant showed defects in the formation of the axis-loop structure and LinE assembly and thus exhibited reduced meiotic recombination. Collectively, our results demonstrate that the Rec8-dependent axis-loop structure provides a structural platform essential for LinE assembly, facilitating meiotic recombination of homologous chromosomes, independently of its role in sister chromatid cohesion.

リンク情報
DOI
https://doi.org/10.1093/nar/gkac183
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000773049400001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1093/nar/gkac183
  • ISSN : 0305-1048
  • eISSN : 1362-4962
  • ORCIDのPut Code : 110578829
  • Web of Science ID : WOS:000773049400001

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