5L4G

The human 26S proteasome at 3.9 A

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) contai ...

    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
Proteasome subunit alpha type-6 A, N246Homo sapiensMutation(s): 0 
Gene Names: PSMA6, PROS27
EC: 3.4.25.1
Find proteins for P60900 (Homo sapiens)
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GTEx:  ENSG00000100902
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2 B, O234Homo sapiensMutation(s): 0 
Gene Names: PSMA2, HC3, PSC3
EC: 3.4.25.1
Find proteins for P25787 (Homo sapiens)
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GTEx:  ENSG00000106588
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4 C, P261Homo sapiensMutation(s): 0 
Gene Names: PSMA4, HC9, PSC9
EC: 3.4.25.1
Find proteins for P25789 (Homo sapiens)
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GTEx:  ENSG00000041357
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-7 D, Q248Homo sapiensMutation(s): 0 
Gene Names: PSMA7, HSPC
EC: 3.4.25.1
Find proteins for O14818 (Homo sapiens)
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GTEx:  ENSG00000101182
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5 E, R241Homo sapiensMutation(s): 0 
Gene Names: PSMA5
EC: 3.4.25.1
Find proteins for P28066 (Homo sapiens)
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GTEx:  ENSG00000143106
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1 F, S263Homo sapiensMutation(s): 0 
Gene Names: PSMA1, HC2, NU, PROS30, PSC2
EC: 3.4.25.1
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GTEx:  ENSG00000129084
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3 G, T255Homo sapiensMutation(s): 0 
Gene Names: PSMA3, HC8, PSC8
EC: 3.4.25.1
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GTEx:  ENSG00000100567
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-1 1, U241Homo sapiensMutation(s): 0 
Gene Names: PSMB1, PSC5
EC: 3.4.25.1
Find proteins for P20618 (Homo sapiens)
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GTEx:  ENSG00000008018
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-2 2, V201Homo sapiensMutation(s): 0 
Gene Names: PSMB2
EC: 3.4.25.1
Find proteins for P49721 (Homo sapiens)
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GTEx:  ENSG00000126067
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-3 3, W205Homo sapiensMutation(s): 0 
Gene Names: PSMB3
EC: 3.4.25.1
Find proteins for P49720 (Homo sapiens)
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GTEx:  ENSG00000277791
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-4 4, X264Homo sapiensMutation(s): 0 
Gene Names: PSMB4, PROS26
EC: 3.4.25.1
Find proteins for P28070 (Homo sapiens)
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GTEx:  ENSG00000159377
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-5 5, Y263Homo sapiensMutation(s): 0 
Gene Names: PSMB5, LMPX, MB1, X
EC: 3.4.25.1
Find proteins for P28074 (Homo sapiens)
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GTEx:  ENSG00000100804
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-6 6, Z239Homo sapiensMutation(s): 0 
Gene Names: PSMB6, LMPY, Y
EC: 3.4.25.1
Find proteins for P28072 (Homo sapiens)
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GTEx:  ENSG00000142507
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-7 7, 8277Homo sapiensMutation(s): 0 
Gene Names: PSMB7, Z
EC: 3.4.25.1
Find proteins for Q99436 (Homo sapiens)
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GTEx:  ENSG00000136930
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 7 H433Homo sapiensMutation(s): 0 
Gene Names: PSMC2, MSS1
Find proteins for P35998 (Homo sapiens)
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GTEx:  ENSG00000161057
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 4 I440Homo sapiensMutation(s): 0 
Gene Names: PSMC1
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 6B K418Homo sapiensMutation(s): 0 
Gene Names: PSMC4, MIP224, TBP7
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 10B L389Homo sapiensMutation(s): 0 
Gene Names: PSMC6, SUG2
Find proteins for P62333 (Homo sapiens)
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 6A M439Homo sapiensMutation(s): 0 
Gene Names: PSMC3, TBP1
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Entity ID: 20
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 8 J406Homo sapiensMutation(s): 0 
Gene Names: PSMC5, SUG1
Find proteins for P62195 (Homo sapiens)
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GTEx:  ENSG00000087191
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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, Derived calculations
  • Version 1.3: 2019-12-11
    Changes: Other