Evidence map›Paper›PMID 34331869›Full record

ArticleDevelopmental cell2021

Separase cleaves the kinetochore protein Meikin at the meiosis I/II transition.

Nolan K Maier, Jun Ma, Michael A Lampson, Iain M Cheeseman

Open access · bronzeAbstract read
In one paragraph

Article in Developmental cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Oocyte Kinetochores at the Nexus of Meiotic Drive and Segregation Fidelity.Advances in experimental medicine and biology · 2026
    Review
  6. Article
  7. Article
  8. Article
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  10. Article
  11. Article
  12. Article
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  14. Article
  15. The molecular mechanisms of human separase regulation.Biochemical Society transactions · 2023
    Review
  16. Separase and Roads to Disengage Sister Chromatids during Anaphase.International journal of molecular sciences · 2023
    Review
  17. Mapping separase-mediated cleavage in situ.NAR genomics and bioinformatics · 2022
    Article
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Nolan K MaierWhitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.
Jun MaDepartment of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA.
Michael A LampsonDepartment of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address: lampson@sas.upenn.edu.
Iain M CheesemanWhitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA. Electronic address: icheese@wi.mit.edu.
University of Pennsylvania · USWhitehead Institute for Biomedical Research · US

Funding

PRE-DOCTORAL TRAINING IN THE BIOLOGICAL SCIENCEST32GM007287 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BELL, STEPHEN P., KEATING, AMY E · 1985 to 2019
$40.8M
Molecular Analysis of Kinetochore FunctionR35GM126930 · NIGMS · WHITEHEAD INSTITUTE FOR BIOMEDICAL RES · PI Iain McPherson Cheeseman · 2018 to 2026
$7.0M
Cell Biological mechanisms of centromere driveR35GM122475 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI Michael Lampson · 2017 to 2026
$4.5M
NIGMS NIH HHS R35 GM122475NIGMS NIH HHS R35 GM126930NIGMS NIH HHS T32 GM007287
6 · The paper itself

Abstract

To generate haploid gametes, germ cells undergo two consecutive meiotic divisions requiring key changes to the cell division machinery. Here, we demonstrate that the protease separase rewires key cell division processes at the meiosis I/II transition by cleaving the meiosis-specific protein Meikin. Separase proteolysis does not inactivate Meikin but instead alters its function to create a distinct activity state. Full-length Meikin and the C-terminal Meikin separase cleavage product both localize to kinetochores, bind to Plk1 kinase, and promote Rec8 cleavage, but our results reveal distinct roles for these proteins in controlling meiosis. Mutations that prevent Meikin cleavage or that conditionally inactivate Meikin at anaphase I result in defective meiosis II chromosome alignment in mouse oocytes. Finally, as oocytes exit meiosis, C-Meikin is eliminated by APC/C-mediated degradation prior to the first mitotic division. Thus, multiple regulatory events irreversibly modulate Meikin activity during successive meiotic divisions to rewire the cell division machinery at two distinct transitions.

Indexed as

AnimalsAnimals, Outbred StrainsCell Cycle ProteinsCell DivisionCell Nucleus DivisionCentromereChromosomal Proteins, Non-HistoneChromosome SegregationFemaleHeLa CellsHumansKinetochoresMeiosisMiceOocytesPolo-Like Kinase 1Cell Cycle ProteinsChromosomal Proteins, Non-HistoneMEIKIN protein, mousePolo-Like Kinase 1Protein Serine-Threonine KinasesProto-Oncogene ProteinsSeparasecohesinkinetochoreMeikinmeiosisPlk1separase

Identifiers

PMID34331869
PMCPMC8355204
OpenAlexW3191639392

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.