5L4K

The human 26S proteasome lid


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of the human 26S proteasome at a resolution of 3.9 angstrom.

Schweitzer, A.Aufderheide, A.Rudack, T.Beck, F.Pfeifer, G.Plitzko, J.M.Sakata, E.Schulten, K.Forster, F.Baumeister, W.

(2016) Proc Natl Acad Sci U S A 113: 7816-7821

  • DOI: 10.1073/pnas.1608050113
  • Primary Citation of Related Structures:  
    5L4G, 5L4K

  • PubMed Abstract: 
  • Protein degradation in eukaryotic cells is performed by the Ubiquitin-Proteasome System (UPS). The 26S proteasome holocomplex consists of a core particle (CP) that proteolytically degrades polyubiquitylated proteins, and a regulatory particle (RP) co ...

    Protein degradation in eukaryotic cells is performed by the Ubiquitin-Proteasome System (UPS). The 26S proteasome holocomplex consists of a core particle (CP) that proteolytically degrades polyubiquitylated proteins, and a regulatory particle (RP) containing the AAA-ATPase module. This module controls access to the proteolytic chamber inside the CP and is surrounded by non-ATPase subunits (Rpns) that recognize substrates and deubiquitylate them before unfolding and degradation. The architecture of the 26S holocomplex is highly conserved between yeast and humans. The structure of the human 26S holocomplex described here reveals previously unidentified features of the AAA-ATPase heterohexamer. One subunit, Rpt6, has ADP bound, whereas the other five have ATP in their binding pockets. Rpt6 is structurally distinct from the other five Rpt subunits, most notably in its pore loop region. For Rpns, the map reveals two main, previously undetected, features: the C terminus of Rpn3 protrudes into the mouth of the ATPase ring; and Rpn1 and Rpn2, the largest proteasome subunits, are linked by an extended connection. The structural features of the 26S proteasome observed in this study are likely to be important for coordinating the proteasomal subunits during substrate processing.


    Organizational Affiliation

    Department of Molecular Structural Biology, Max-Planck Institute of Biochemistry, D-82152 Martinsried, Germany; f.g.forster@uu.nl baumeist@biochem.mpg.de.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 4W377Homo sapiensMutation(s): 0 
Gene Names: PSMD4MCB1
Find proteins for P55036 (Homo sapiens)
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PHAROS  P55036
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 14V310Homo sapiensMutation(s): 0 
Gene Names: PSMD14POH1
EC: 3.4.19
Find proteins for O00487 (Homo sapiens)
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PHAROS  O00487
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 8T350Homo sapiensMutation(s): 0 
Gene Names: PSMD8
Find proteins for P48556 (Homo sapiens)
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PHAROS  P48556
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome complex subunit DSS1Y70Homo sapiensMutation(s): 0 
Gene Names: SEM1C7orf76DSS1SHFDG1SHFM1
Find proteins for P60896 (Homo sapiens)
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PHAROS  P60896
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 2Z908Homo sapiensMutation(s): 0 
Gene Names: PSMD2TRAP2
Find proteins for Q13200 (Homo sapiens)
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PHAROS  Q13200
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 1N953Homo sapiensMutation(s): 0 
Gene Names: PSMD1
Find proteins for Q99460 (Homo sapiens)
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PHAROS  Q99460
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 3S534Homo sapiensMutation(s): 0 
Gene Names: PSMD3
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 12P456Homo sapiensMutation(s): 0 
Gene Names: PSMD12
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PHAROS  O00232
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 11Q422Homo sapiensMutation(s): 0 
Gene Names: PSMD11
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PHAROS  O00231
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 6R389Homo sapiensMutation(s): 0 
Gene Names: PSMD6KIAA0107PFAAP4
Find proteins for Q15008 (Homo sapiens)
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PHAROS  Q15008
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 7U324Homo sapiensMutation(s): 0 
Gene Names: PSMD7MOV34L
Find proteins for P51665 (Homo sapiens)
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 13O376Homo sapiensMutation(s): 0 
Gene Names: PSMD13
Find proteins for Q9UNM6 (Homo sapiens)
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PHAROS  Q9UNM6
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-21
    Changes: Database references
  • Version 1.2: 2017-08-02
    Changes: Data collection
  • Version 1.3: 2019-12-11
    Changes: Other