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Linking Chromosome Duplication and Segregation via Sister Chromatid Cohesion
Book chapter   Open access

Linking Chromosome Duplication and Segregation via Sister Chromatid Cohesion

Adam R Leman and Eishi Noguchi
Cell Cycle Control
14 May 2014
PMID: 24906310
url
https://doi.org/10.1007/978-1-4939-0888-2_5View
Published, Version of Record (VoR) Open

Abstract

DNA replication Replication fork Genomic integrity S phase Cohesinopathy SMC proteins Sister chromatid cohesion Cohesin Chromosome segregation Adherin/kollerin
DNA replication during S phase generates two identical copies of each chromosome. Each chromosome is destined for a daughter cell, but each daughter must receive one and only one copy of each chromosome. To ensure accurate chromosome segregation, eukaryotic cells are equipped with a mechanism to pair the chromosomes during chromosome duplication and hold the pairs until a bi-oriented mitotic spindle is formed and the pairs are pulled apart. This mechanism is known as sister chromatid cohesion, and its actions span the entire cell cycle. During G1, before DNA is copied during S phase, proteins termed cohesins are loaded onto DNA. Paired chromosomes are held together through G2 phase, and finally the cohesins are dismantled during mitosis. The processes governing sister chromatid cohesion ensure that newly replicated sisters are held together from the moment they are generated to the metaphase–anaphase transition, when sisters separate.

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Collaboration types
Domestic collaboration
Web of Science research areas
Biochemical Research Methods
Biochemistry & Molecular Biology
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