Publication details

The exosome and RNA quality control in the nucleus


VAŇÁČOVÁ Štěpánka ŠTEFL Richard

Year of publication 2007
Type Article in Periodical
Magazine / Source EMBO REPORTS
MU Faculty or unit

Faculty of Science

Field Biochemistry
Keywords RNA decay; exoribonuclease; exosome; structure; nuclear polyadenylation; TRAMP
Description To control the quality of RNA biogenesis in the nucleus, cells use sophisticated molecular machines. These machines recognize and degrade not only RNA trimmings, the leftovers of RNA processing, but also incorrectly processed RNAs that contain defects. By using this mechanism, cells ensure that only high-quality RNAs are engaged in protein synthesis and other cellular processes. The exosome, a complex of several exoribonucleolytic and RNA-binding proteins, is the central 3'-end RNA degradation and processing factor in this surveillance apparatus. The exosome operates with auxiliary factors that stimulate its activity and recruit its RNA substrates in the crowded cellular environment. In this review, we discuss recent structural and functional data related to the nuclear quality-control apparatus, including the long-awaited structure of the human exosome and its activity.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info