4IFD | pdb_00004ifd

Crystal structure of an 11-subunit eukaryotic exosome complex bound to RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 
    0.224 (Depositor), 0.225 (DCC) 
  • R-Value Work: 
    0.182 (Depositor), 0.186 (DCC) 
  • R-Value Observed: 
    0.185 (Depositor) 

Starting Models: experimental
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wwPDB Validation 3D Report Full Report

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This is version 1.5 of the entry. See complete history

Literature

Crystal structure of an RNA-bound 11-subunit eukaryotic exosome complex.

Makino, D.L.Baumgartner, M.Conti, E.

(2013) Nature 495: 70-75

  • DOI: https://doi.org/10.1038/nature11870
  • Primary Citation Related Structures: 
    4IFD

  • PubMed Abstract: 

    The exosome is the major 3'-5' RNA-degradation complex in eukaryotes. The ubiquitous core of the yeast exosome (Exo-10) is formed by nine catalytically inert subunits (Exo-9) and a single active RNase, Rrp44. In the nucleus, the Exo-10 core recruits another nuclease, Rrp6. Here we crystallized an approximately 440-kilodalton complex of Saccharomyces cerevisiae Exo-10 bound to a carboxy-terminal region of Rrp6 and to an RNA duplex with a 3'-overhang of 31 ribonucleotides. The 2.8 Å resolution structure shows how RNA is funnelled into the Exo-9 channel in a single-stranded conformation by an unwinding pore. Rrp44 adopts a closed conformation and captures the RNA 3'-end that exits from the side of Exo-9. Exo-9 subunits bind RNA with sequence-unspecific interactions reminiscent of archaeal exosomes. The substrate binding and channelling mechanisms of 3'-5' RNA degradation complexes are conserved in all kingdoms of life.


  • Organizational Affiliation
    • Department of Structural Cell Biology, MPI for Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.

Macromolecule Content 

  • Total Structure Weight: 438.16 kDa 
  • Atom Count: 26,848 
  • Modeled Residue Count: 3,403 
  • Deposited Residue Count: 3,838 
  • Unique protein chains: 11
  • Unique nucleic acid chains: 1

Macromolecules


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Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP45304Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: D9954.1RRP45YDR280W
UniProt
Find proteins for Q05636 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupQ05636
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Reference Sequence
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Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component SKI6248Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: ECM20G7587RRP41SKI6YGR195W
UniProt
Find proteins for P46948 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP46948
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Reference Sequence
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Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP43393Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: RRP43YCR035CYCR35CYCR522
UniProt
Find proteins for P25359 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP46245Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RRP46YGR095C
UniProt
Find proteins for P53256 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP42267Saccharomyces cerevisiae S288CMutation(s): 1 
Gene Names: RRP42YDL111C
UniProt
Find proteins for Q12277 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 6
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component MTR3250Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: G6676MTR3YGR158C
UniProt
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Reference Sequence
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Entity ID: 7
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP40242Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RRP40YOL142W
UniProt
Find proteins for Q08285 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 8
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component RRP4361Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RRP4YHR069C
UniProt
Find proteins for P38792 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 9
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex component CSL4301Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CSL4N1154SKI4YNL232W
UniProt
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Reference Sequence
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Entity ID: 10
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex exonuclease DIS31,003Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: DIS3O2197RRP44YOL021C
EC: 3.1.13 (PDB Primary Data), 3.1.26 (PDB Primary Data)
UniProt
Find proteins for Q08162 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 11
MoleculeChains  Sequence LengthOrganismDetailsImage
Exosome complex exonuclease RRP6179Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RRP6UNC733YOR001W
EC: 3.1.13
UniProt
Find proteins for Q12149 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Reference Sequence
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Entity ID: 12
MoleculeChains LengthOrganismImage
RNA (45-MER)L [auth R]45N/A
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
MES

Query on MES



Download:Ideal Coordinates CCD File
S [auth G]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
GOL

Query on GOL



Download:Ideal Coordinates CCD File
O [auth C],
R [auth G],
U [auth H],
V [auth H],
W [auth H]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
BR

Query on BR



Download:Ideal Coordinates CCD File
AA [auth J]
BA [auth J]
M [auth A]
N [auth A]
P [auth E]
AA [auth J],
BA [auth J],
M [auth A],
N [auth A],
P [auth E],
Q [auth F],
T [auth H],
X [auth I],
Y [auth J],
Z [auth J]
BROMIDE ION
Br
CPELXLSAUQHCOX-UHFFFAOYSA-M
ZN

Query on ZN



Download:Ideal Coordinates CCD File
DA [auth J]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG

Query on MG



Download:Ideal Coordinates CCD File
CA [auth J]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free:  0.224 (Depositor), 0.225 (DCC) 
  • R-Value Work:  0.182 (Depositor), 0.186 (DCC) 
  • R-Value Observed: 0.185 (Depositor) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 154.09α = 90
b = 107.44β = 110.63
c = 150.46γ = 90
Software Package:
Software NamePurpose
RemDAqdata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-02-06
    Type: Initial release
  • Version 1.1: 2013-03-13
    Changes: Database references
  • Version 1.2: 2013-11-13
    Changes: Database references
  • Version 1.3: 2017-11-15
    Changes: Refinement description
  • Version 1.4: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 1.5: 2024-10-30
    Changes: Structure summary