Title
A Role for Chromatin Remodeling in Cohesin Loading onto Chromosomes
Date Issued
16 May 2019
Access level
open access
Resource Type
journal article
Author(s)
Muñoz S.
Minamino M.
Patel H.
Uhlmann F.
The Francis Crick Institute
Publisher(s)
Cell Press
Abstract
Cohesin is a conserved, ring-shaped protein complex that topologically embraces DNA. Its central role in genome organization includes functions in sister chromatid cohesion, DNA repair, and transcriptional regulation. Cohesin loading onto chromosomes requires the Scc2-Scc4 cohesin loader, whose presence on chromatin in budding yeast depends on the RSC chromatin remodeling complex. Here we reveal a dual role of RSC in cohesin loading. RSC acts as a chromatin receptor that recruits Scc2-Scc4 by a direct protein interaction independent of chromatin remodeling. In addition, chromatin remodeling is required to generate a nucleosome-free region that is the substrate for cohesin loading. An engineered cohesin loading module can be created by fusing the Scc2 C terminus to RSC or to other chromatin remodelers, but not to unrelated DNA binding proteins. These observations demonstrate the importance of nucleosome-free DNA for cohesin loading and provide insight into how cohesin accesses DNA during its varied chromosomal activities. Despite our increasing understanding of cohesin, how this essential protein complex accesses chromosomes is incompletely understood. Muñoz et al. provide insight into this by revealing that a molecular machine that mobilizes nucleosomes assists with cohesin loading and defines the DNA entry points for cohesin in the context of chromatin.
Start page
664
End page
673.e5
Volume
74
Issue
4
Language
English
OCDE Knowledge area
Bioquímica, Biología molecular
Scopus EID
2-s2.0-85065616315
PubMed ID
Source
Molecular Cell
ISSN of the container
1097-2765
Sponsor(s)
We would like to thank L. Lopez-Serra for the initial observation of RSC-cohesin and RSC-cohesin loader interactions, B. Cairns and K. Shirahige for antibodies, P. Korber for the +1 nucleosome annotation list, Y. Kakui for the microarray analyses, C. Bouchoux for reagents and advice, and J. Diffley from the Chromosome Replication Laboratory, A. Alidoust and N. Patel from the Crick Fermentation Science Technology Platform, as well as members from the Crick High Throughput Sequencing Science Technology Platform for their contributions and our laboratory members for discussions and critical reading of the manuscript. This project received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No. 670412 ) and The Francis Crick Institute , which receives its core funding from Cancer Research UK ( FC001198 ), the UK Medical Research Council ( FC001198 ), and the Wellcome Trust ( FC001198 ). S.M. and M.M. were supported by EMBO long-term fellowships.
Sources of information: Directorio de Producción Científica Scopus