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Sunday, July 19, 2020 | History

2 edition of Keeping sisters together: Cohesin and Ycs4 define distinct mechanisms for sister chromatid cohesion. found in the catalog.

Keeping sisters together: Cohesin and Ycs4 define distinct mechanisms for sister chromatid cohesion.

Wendy W. S. Lam

Keeping sisters together: Cohesin and Ycs4 define distinct mechanisms for sister chromatid cohesion.

by Wendy W. S. Lam

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Published .
Written in English


About the Edition

The maintenance of genetic integrity during the eukaryotic cell cycle requires sister chromatid cohesion and chromosome condensation. I show that Ycs4p, a subunit of the condensin complex, has an important role in sister chromatid cohesion. My data suggest that Ycs4p functions in a distinct sister chromatid cohesion pathway from that mediated by the cohesin subunit Mcd1p. First, the two proteins localize independently on chromatin. Strikingly, and in contrast to cohesin mutants, a loss of Ycs4p-mediated cohesion can be efficiently re-established within mitosis following reactivation of the protein. Finally, Ycs4p appears specifically required for chromosomal arm cohesion but not at centromeric nor telomeric loci, whereas cohesins are needed throughout the chromosome length. Together these data demonstrate that Ycs4p is involved in a previously uncharacterized cohesin-independent mechanism for chromosome pairing in the budding yeast. This cohesion mechanism provides a unique opportunity to gain mechanistic insight into cohesin function and supports synapsis-based models for cohesin-dependent sister chromatid pairing.

The Physical Object
Pagination93 leaves.
Number of Pages93
ID Numbers
Open LibraryOL19215100M
ISBN 100494022442


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Keeping sisters together: Cohesin and Ycs4 define distinct mechanisms for sister chromatid cohesion by Wendy W. S. Lam Download PDF EPUB FB2