Journal
EMBO REPORTS
Volume 17, Issue 5, Pages 695-707Publisher
WILEY
DOI: 10.15252/embr.201541060
Keywords
centromere; cohesin complex; meiosis; Sororin; synaptonemal complex
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Funding
- Junta de CyLeon
- Ministerio de Economia y Competitividad (Spain) [MEIONet BFU2015-71786-REDT, BFU2013-48481-R]
- FEDER
- Fundacion Mutua Madrilena [AP98712012]
- Priority Program SPP 1384 of the German Science Foundation [AI 1090/2-1]
- Japan Society for the Promotion of Science [25891015]
- [SAF2011-28842-C02-01]
- [BFU2014-53681-P]
- [SAF2011-25252]
- [BFU2014-59307-R]
- Grants-in-Aid for Scientific Research [25891015] Funding Source: KAKEN
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The distribution and regulation of the cohesin complexes have been extensively studied during mitosis. However, the dynamics of their different regulators in vertebrate meiosis is largely unknown. In this work, we have analyzed the distribution of the regulatory factor Sororin during male mouse meiosis. Sororin is detected at the central region of the synaptonemal complex during prophase I, in contrast with the previously reported localization of other cohesin components in the lateral elements. This localization of Sororin depends on the transverse filaments protein SYCP1, but not on meiosis-specific cohesin subunits REC8 and SMC1. By late prophase I, Sororin accumulates at centromeres and remains there up to anaphase II. The phosphatase activity of PP2A seems to be required for this accumulation. We hypothesize that Sororin function at the central region of the synaptonemal complex could be independent on meiotic cohesin complexes. In addition, we suggest that Sororin participates in the regulation of centromeric cohesion during meiosis in collaboration with SGO2-PP2A.
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