Structural evidence for Scc4-dependent localization of cohesin loading
نویسندگان
چکیده
منابع مشابه
Structural evidence for Scc4-dependent localization of cohesin loading
The cohesin ring holds newly replicated sister chromatids together until their separation at anaphase. Initiation of sister chromatid cohesion depends on a separate complex, Scc2(NIPBL)/Scc4(Mau2) (Scc2/4), which loads cohesin onto DNA and determines its localization across the genome. Proper cohesin loading is essential for cell division, and partial defects cause chromosome missegregation and...
متن کاملIn vitro loading of human cohesin on DNA by the human Scc2-Scc4 loader complex.
The loading of cohesin onto chromatin requires the heterodimeric complex sister chromatid cohesion (Scc)2 and Scc4 (Scc2/4), which is highly conserved in all species. Here, we describe the purification of the human (h)-Scc2/4 and show that it interacts with h-cohesin and the heterodimeric Smc1-Smc3 complex but not with the Smc1 or Smc3 subunit alone. We demonstrate that both h-Scc2/4 and h-cohe...
متن کاملA Screen for Cohesion Mutants Uncovers Ssl3, the Fission Yeast Counterpart of the Cohesin Loading Factor Scc4
Sister-chromatid cohesion is mediated by cohesin, a ring-shape complex made of four core subunits called Scc1, Scc3, Smc1, and Smc3 in Saccharomyces cerevisiae (Rad21, Psc3, Psm1, and Psm3 in Schizosaccharomyces pombe). How cohesin ensures cohesion is unknown, although its ring shape suggests that it may tether sister DNA strands by encircling them . Cohesion establishment is a two-step process...
متن کاملCohesin loading and sliding.
Cohesin is best known as a crucial component of chromosomal stability. Composed of several essential subunits in budding yeast, cohesin forms a ring-like complex that is thought to embrace sister chromatids, thereby physically linking them until their timely segregation during cell division. The ability of cohesin to bind chromosomes depends on the Scc2-Scc4 complex, which is viewed as a loadin...
متن کاملHuman Scc4 Is Required for Cohesin Binding to Chromatin, Sister-Chromatid Cohesion, and Mitotic Progression
BACKGROUND Sister-chromatid cohesion depends on the cohesin complex whose association with chromatin is mediated by Scc2 and Scc4 in budding yeast. Both cohesin and Scc2 have been conserved from yeast to humans, but no Scc4 orthologs have been identified. Mutation of Scc2 orthologs causes defects in cohesion, transcription, and development, resulting in Cornelia de Lange syndrome in humans. R...
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ژورنال
عنوان ژورنال: eLife
سال: 2015
ISSN: 2050-084X
DOI: 10.7554/elife.06057