5L4K

The human 26S proteasome lid


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 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.USA 113: 7816-7821

  • DOI: 10.1073/pnas.1608050113
  • Primary Citation of Related Structures:  

  • 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;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 4
W
377Homo sapiensMutation(s): 0 
Gene Names: PSMD4 (MCB1)
Find proteins for P55036 (Homo sapiens)
Go to Gene View: PSMD4
Go to UniProtKB:  P55036
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 14
V
310Homo sapiensMutation(s): 0 
Gene Names: PSMD14 (POH1)
EC: 3.4.19.-
Find proteins for O00487 (Homo sapiens)
Go to Gene View: PSMD14
Go to UniProtKB:  O00487
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 8
T
350Homo sapiensMutation(s): 0 
Gene Names: PSMD8
Find proteins for P48556 (Homo sapiens)
Go to Gene View: PSMD8
Go to UniProtKB:  P48556
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
26S proteasome complex subunit DSS1
Y
70Homo sapiensMutation(s): 0 
Gene Names: SEM1 (C7orf76, DSS1, SHFDG1, SHFM1)
Find proteins for P60896 (Homo sapiens)
Go to Gene View: SEM1
Go to UniProtKB:  P60896
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 2
Z
908Homo sapiensMutation(s): 0 
Gene Names: PSMD2 (TRAP2)
Find proteins for Q13200 (Homo sapiens)
Go to Gene View: PSMD2
Go to UniProtKB:  Q13200
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 1
N
953Homo sapiensMutation(s): 0 
Gene Names: PSMD1
Find proteins for Q99460 (Homo sapiens)
Go to Gene View: PSMD1
Go to UniProtKB:  Q99460
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 3
S
534Homo sapiensMutation(s): 0 
Gene Names: PSMD3
Find proteins for O43242 (Homo sapiens)
Go to Gene View: PSMD3
Go to UniProtKB:  O43242
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 12
P
456Homo sapiensMutation(s): 0 
Gene Names: PSMD12
Find proteins for O00232 (Homo sapiens)
Go to Gene View: PSMD12
Go to UniProtKB:  O00232
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 11
Q
422Homo sapiensMutation(s): 0 
Gene Names: PSMD11
Find proteins for O00231 (Homo sapiens)
Go to Gene View: PSMD11
Go to UniProtKB:  O00231
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 6
R
389Homo sapiensMutation(s): 0 
Gene Names: PSMD6 (KIAA0107, PFAAP4)
Find proteins for Q15008 (Homo sapiens)
Go to Gene View: PSMD6
Go to UniProtKB:  Q15008
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 7
U
324Homo sapiensMutation(s): 0 
Gene Names: PSMD7 (MOV34L)
Find proteins for P51665 (Homo sapiens)
Go to Gene View: PSMD7
Go to UniProtKB:  P51665
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 13
O
376Homo sapiensMutation(s): 0 
Gene Names: PSMD13
Find proteins for Q9UNM6 (Homo sapiens)
Go to Gene View: PSMD13
Go to UniProtKB:  Q9UNM6
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-21
    Type: Database references
  • Version 1.2: 2017-08-02
    Type: Data collection