Reconstitution, activities, and structure of the eukaryotic RNA exosome - PubMed (original) (raw)
Comparative Study
. 2006 Dec 15;127(6):1223-37.
doi: 10.1016/j.cell.2006.10.037.
Affiliations
- PMID: 17174896
- DOI: 10.1016/j.cell.2006.10.037
Free article
Comparative Study
Reconstitution, activities, and structure of the eukaryotic RNA exosome
Quansheng Liu et al. Cell. 2006.
Free article
Erratum in
- Cell. 2007 Oct 5;131(1):188-9
Abstract
The RNA exosome is a multisubunit 3' to 5' exoribonuclease complex that participates in degradation and processing of cellular RNA. To determine the activities and structure of the eukaryotic exosome, we report the reconstitution of 9-subunit exosomes from yeast and human and reconstitution of 10- and 11-subunit exosomes from yeast. Comparative biochemical analysis between purified subunits and reconstituted exosomes using AU-rich, polyadenylated (poly[A]), generic, and structured RNA substrates reveals processive phosphorolytic activities for human Rrp41/Rrp45 and the 9-subunit human exosome, processive hydrolytic activities for yeast Rrp44 and the yeast 10-subunit exosome, distributive hydrolytic activities for Rrp6, and processive and distributive hydrolytic activities for the yeast 11-subunit exosome. To elucidate the architecture of a eukaryotic exosome, its conserved surfaces, and the structural basis for RNA decay, we report the X-ray structure determination for the 286 kDa nine-subunit human exosome at 3.35 A.
Comment in
- A view to a kill: structure of the RNA exosome.
Shen V, Kiledjian M. Shen V, et al. Cell. 2006 Dec 15;127(6):1093-5. doi: 10.1016/j.cell.2006.11.035. Cell. 2006. PMID: 17174886 Free PMC article.
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