Open AccessThe ubiquitin–proteasome system regulates meiotic chromosome organization
Author(s) -
Xiao Yang,
Meihui Song,
Ying Wang,
Taicong Tan,
Zhongyu Tian,
Binyuan Zhai,
Xuan Yang,
Yingjin Tan,
Yanding Cao,
Shaojun Dai,
Shunxin Wang,
Liangran Zhang
Publication year - 2022
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2106902119
Subject(s) - biology , chromosome segregation , proteasome , microbiology and biotechnology , meiosis , ubiquitin , cohesin , genetics , f box protein , chromosome , ubiquitin ligase , gene
Significance Meiotic crossover recombination is required for faithful chromosome segregation and promotes genetic diversity by reshuffling alleles between parental chromosomes. Meiotic chromosomes are organized into arrays of loops that are anchored to the proteinaceous axes. The length of the meiotic chromosome axis is intimately associated with crossover frequencies in yeast and higher eukaryotes. However, how chromosome axis length is regulated in meiosis is unknown. Here, we demonstrate that cohesin regulator Pds5 interacts with proteasomes to regulate meiotic chromosome axis length by modulating ubiquitination. This regulatory mechanism also includes two ubiquitin E3 ligases, SCF (Skp–Cullin–F-box) and Ufd4. These findings identify a molecular pathway in regulating chromosome organization and reveal an unexpected function of the ubiquitin–proteasome system in meiosis.