Reference: Hsu JM, et al. (2003) The yeast RSC chromatin-remodeling complex is required for kinetochore function in chromosome segregation. Mol Cell Biol 23(9):3202-15

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Abstract


The accurate segregation of chromosomes requires the kinetochore, a complex protein machine that assembles onto centromeric DNA to mediate attachment of replicated sister chromatids to the mitotic spindle apparatus. This study reveals an important role for the yeast RSC ATP-dependent chromatin-remodeling complex at the kinetochore in chromosome transmission. Mutations in genes encoding two core subunits of RSC, the ATPase Sth1p and the Snf5p homolog Sfh1p, interact genetically with mutations in genes encoding kinetochore proteins and with a mutation in centromeric DNA. RSC also interacts genetically and physically with the histone and histone variant components of centromeric chromatin. Importantly, RSC is localized to centromeric and centromere-proximal chromosomal regions, and its association with these loci is dependent on Sth1p. Both sth1 and sfh1 mutants exhibit altered centromeric and centromere-proximal chromatin structure and increased missegregation of authentic chromosomes. Finally, RSC is not required for centromeric deposition of the histone H3 variant Cse4p, suggesting that RSC plays a role in reconfiguring centromeric and flanking nucleosomes following Cse4p recruitment for proper chromosome transmission.

Reference Type
Journal Article | Research Support, U.S. Gov't, P.H.S.
Authors
Hsu JM, Huang J, Meluh PB, Laurent BC
Primary Lit For
MIF2 | STH1 | SFH1
Additional Lit For
SNF5 | CSE4 | RSC chromatin remodelling complex, variant RSC2 | RSC chromatin remodelling complex, variant RSC1

Gene Ontology Annotations


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Gene/Complex Qualifier Gene Ontology Term Aspect Annotation Extension Evidence Method Source Assigned On Reference

Interaction Annotations


Genetic Interactions

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Interactor Interactor Allele Assay Annotation Action Phenotype SGA score P-value Source Reference

Physical Interactions 10 entries for 5 genes

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InteractorInteractorAssayAnnotationActionModification
HHF1STH1Affinity Capture-Westernmanually curatedBait-HitNo Modification
HHF1STH1Far Westernmanually curatedBait-HitNo Modification
HHF1STH1Reconstituted Complexmanually curatedBait-HitNo Modification
HHT1STH1Affinity Capture-Westernmanually curatedBait-HitNo Modification
HHT1STH1Far Westernmanually curatedBait-HitNo Modification
HHT1STH1Reconstituted Complexmanually curatedBait-HitNo Modification
STH1HTB1Affinity Capture-Westernmanually curatedHit-BaitNo Modification
STH1HTB1Far Westernmanually curatedHit-BaitNo Modification
STH1HTB1Reconstituted Complexmanually curatedHit-BaitNo Modification
STH1RSC8Two-hybridmanually curatedBait-HitNo Modification
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