2JE6

Structure of a 9-subunit archaeal exosome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

RNA Channelling by the Archaeal Exosome.

Lorentzen, E.Dziembowski, A.Lindner, D.Seraphin, B.Conti, E.

(2007) EMBO Rep 8: 470

  • DOI: 10.1038/sj.embor.7400945
  • Primary Citation of Related Structures:  
    2JEB, 2JEA, 2JE6

  • PubMed Abstract: 
  • Exosomes are complexes containing 3' --> 5' exoribonucleases that have important roles in processing, decay and quality control of various RNA molecules. Archaeal exosomes consist of a hexameric core of three active RNase PH subunits (ribosomal RNA p ...

    Exosomes are complexes containing 3' --> 5' exoribonucleases that have important roles in processing, decay and quality control of various RNA molecules. Archaeal exosomes consist of a hexameric core of three active RNase PH subunits (ribosomal RNA processing factor (Rrp)41) and three inactive RNase PH subunits (Rrp42). A trimeric ring of subunits with putative RNA-binding domains (Rrp4/cep1 synthetic lethality (Csl)4) is positioned on top of the hexamer on the opposite side to the RNA degrading sites. Here, we present the 1.6 A resolution crystal structure of the nine-subunit exosome of Sulfolobus solfataricus and the 2.3 A structure of this complex bound to an RNA substrate designed to be partly trimmed rather than completely degraded. The RNA binds both at the active site on one side of the molecule and on the opposite side in the narrowest constriction of the central channel. Multiple substrate-binding sites and the entrapment of the substrate in the central channel provide a rationale for the processive degradation of extended RNAs and the stalling of structured RNAs.


    Organizational Affiliation

    European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, D-69117, Heidelberg, Germany. lorentze@embl.de



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EXOSOME COMPLEX EXONUCLEASE 2A277Saccharolobus solfataricusMutation(s): 0 
EC: 3.1.13
Find proteins for Q9UXC0 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q9UXC0 
Go to UniProtKB:  Q9UXC0
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EXOSOME COMPLEX EXONUCLEASE 1B250Saccharolobus solfataricusMutation(s): 1 
EC: 3.1.13
Find proteins for Q9UXC2 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q9UXC2 
Go to UniProtKB:  Q9UXC2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
EXOSOME COMPLEX RNA-BINDING PROTEIN 1I251Saccharolobus solfataricusMutation(s): 0 
EC: 3.1.13
Find proteins for Q9UXC4 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q9UXC4 
Go to UniProtKB:  Q9UXC4
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1PE
Query on 1PE

Download CCD File 
A
PENTAETHYLENE GLYCOL
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

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A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.49α = 90
b = 135.49β = 90
c = 135.49γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-01-23
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance