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The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation

The 2 micron plasmid of Saccharomyces cerevisiae uses the Kip1 motor, but not the functionally redundant Cin8 motor, for its precise nuclear localization and equal segregation. The timing and lifetime of Kip1p association with the plasmid partitioning locus STB are consistent with Kip1p being an aut...

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Detalles Bibliográficos
Autores principales: Cui, Hong, Ghosh, Santanu K., Jayaram, Makkuni
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2700366/
https://www.ncbi.nlm.nih.gov/pubmed/19364922
http://dx.doi.org/10.1083/jcb.200810130
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author Cui, Hong
Ghosh, Santanu K.
Jayaram, Makkuni
author_facet Cui, Hong
Ghosh, Santanu K.
Jayaram, Makkuni
author_sort Cui, Hong
collection PubMed
description The 2 micron plasmid of Saccharomyces cerevisiae uses the Kip1 motor, but not the functionally redundant Cin8 motor, for its precise nuclear localization and equal segregation. The timing and lifetime of Kip1p association with the plasmid partitioning locus STB are consistent with Kip1p being an authentic component of the plasmid partitioning complex. Kip1–STB association is not blocked by disassembling the mitotic spindle. Lack of Kip1p disrupts recruitment of the cohesin complex at STB and cohesion of replicated plasmid molecules. Colocalization of a 2 micron reporter plasmid with Kip1p in close proximity to the spindle pole body is reminiscent of that of a CEN reporter plasmid. Absence of Kip1p displaces the plasmid from this nuclear address, where it has the potential to tether to a chromosome or poach chromosome segregation factors. Exploiting Kip1p, which is subsidiary to Cin8p for chromosome segregation, to direct itself to a “partitioning center” represents yet another facet of the benign parasitism of the yeast plasmid.
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spelling pubmed-27003662009-10-20 The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation Cui, Hong Ghosh, Santanu K. Jayaram, Makkuni J Cell Biol Research Articles The 2 micron plasmid of Saccharomyces cerevisiae uses the Kip1 motor, but not the functionally redundant Cin8 motor, for its precise nuclear localization and equal segregation. The timing and lifetime of Kip1p association with the plasmid partitioning locus STB are consistent with Kip1p being an authentic component of the plasmid partitioning complex. Kip1–STB association is not blocked by disassembling the mitotic spindle. Lack of Kip1p disrupts recruitment of the cohesin complex at STB and cohesion of replicated plasmid molecules. Colocalization of a 2 micron reporter plasmid with Kip1p in close proximity to the spindle pole body is reminiscent of that of a CEN reporter plasmid. Absence of Kip1p displaces the plasmid from this nuclear address, where it has the potential to tether to a chromosome or poach chromosome segregation factors. Exploiting Kip1p, which is subsidiary to Cin8p for chromosome segregation, to direct itself to a “partitioning center” represents yet another facet of the benign parasitism of the yeast plasmid. The Rockefeller University Press 2009-04-20 /pmc/articles/PMC2700366/ /pubmed/19364922 http://dx.doi.org/10.1083/jcb.200810130 Text en © 2009 Cui et al. This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.jcb.org/misc/terms.shtml). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 3.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/3.0/).
spellingShingle Research Articles
Cui, Hong
Ghosh, Santanu K.
Jayaram, Makkuni
The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title_full The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title_fullStr The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title_full_unstemmed The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title_short The selfish yeast plasmid uses the nuclear motor Kip1p but not Cin8p for its localization and equal segregation
title_sort selfish yeast plasmid uses the nuclear motor kip1p but not cin8p for its localization and equal segregation
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2700366/
https://www.ncbi.nlm.nih.gov/pubmed/19364922
http://dx.doi.org/10.1083/jcb.200810130
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