de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

The Yeast Ski Complex: Crystal Structure and RNA Channeling to the Exosome Complex

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons78064

Halbach,  Felix
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons78554

Reichelt,  Peter
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons78574

Rode,  Michaela
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons77867

Conti,  Elena
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Halbach, F., Reichelt, P., Rode, M., & Conti, E. (2013). The Yeast Ski Complex: Crystal Structure and RNA Channeling to the Exosome Complex. CELL, 154(4), 814-826. doi:10.1016/j.cell.2013.07.017.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-538E-7
Abstract
The Ski complex is a conserved multiprotein assembly required for the cytoplasmic functions of the exosome, including RNA turnover, surveillance, and interference. Ski2, Ski3, and Ski8 assemble in a tetramer with 1: 1: 2 stoichiometry. The crystal structure of an S. cerevisiae 370 kDa core complex shows that Ski3 forms an array of 33 TPR motifs organized in N-terminal and C-terminal arms. The C-terminal arm of Ski3 and the two Ski8 subunits position the helicase core of Ski2 centrally within the complex, enhancing RNA binding. The Ski3 N-terminal arm and the Ski2 insertion domain allosterically modulate the ATPase and helicase activities of the complex. Biochemical data suggest that the Ski complex can thread RNAs directly to the exosome, coupling the helicase and the exoribonuclease through a continuous RNA channel. Finally, we identify a Ski8-binding motif common to Ski3 and Spo11, rationalizing the moonlighting properties of Ski8 in mRNA decay and meiosis.