5T0I

Structural basis for dynamic regulation of the human 26S proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.00 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

Structural basis for dynamic regulation of the human 26S proteasome.

Chen, S.Wu, J.Lu, Y.Ma, Y.B.Lee, B.H.Yu, Z.Ouyang, Q.Finley, D.J.Kirschner, M.W.Mao, Y.

(2016) Proc Natl Acad Sci U S A 113: 12991-12996

  • DOI: https://doi.org/10.1073/pnas.1614614113
  • Primary Citation of Related Structures:  
    5T0C, 5T0G, 5T0H, 5T0I, 5T0J

  • PubMed Abstract: 

    The proteasome is the major engine of protein degradation in all eukaryotic cells. At the heart of this machine is a heterohexameric ring of AAA (ATPases associated with diverse cellular activities) proteins that unfolds ubiquitylated target proteins that are concurrently translocated into a proteolytic chamber and degraded into peptides. Using cryoelectron microscopy, we determined a near-atomic-resolution structure of the 2.5-MDa human proteasome in its ground state, as well as subnanometer-resolution structures of the holoenzyme in three alternative conformational states. The substrate-unfolding AAA-ATPase channel is narrowed by 10 inward-facing pore loops arranged into two helices that run in parallel with each other, one hydrophobic in character and the other highly charged. The gate of the core particle was unexpectedly found closed in the ground state and open in only one of the alternative states. Coordinated, stepwise conformational changes of the regulatory particle couple ATP hydrolysis to substrate translocation and regulate gating of the core particle, leading to processive degradation.


  • Organizational Affiliation

    Department of Systems Biology, Harvard Medical School, Boston, MA 02115; marc@hms.harvard.edu youdong_mao@dfci.harvard.edu.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 7433Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000161057 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 4440Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000100764 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 8398Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000087191 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 6B418Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000013275 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 10B403Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000100519 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
26S protease regulatory subunit 6A439Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000165916 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6245Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000100902 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2233Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000106588 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4260Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000041357 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-7247Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000101182 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5240Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000143106 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1268Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000129084 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3254Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000100567 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-6238Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000142507 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-7276Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000136930 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-3204Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000277791 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-2201Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000126067 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-5262Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000100804 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-1240Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000008018 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-4263Homo sapiensMutation(s): 0 
EC: 3.4.25.1
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GTEx:  ENSG00000159377 
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 1953Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000173692 
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 3533Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000108344 
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 12456Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000197170 
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 11422Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000108671 
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 6389Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000163636 
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 7324Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000103035 
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 13AA [auth a]376Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000185627 
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MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 4BA [auth b]377Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000159352 
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MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 14CA [auth c]309Homo sapiensMutation(s): 0 
EC: 3.4.19
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GTEx:  ENSG00000115233 
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MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 8DA [auth d]349Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000099341 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome complex subunit DSS1EA [auth e]70Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000127922 
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MoleculeChains Sequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 2FA [auth f]749Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000175166 
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-19
    Type: Initial release
  • Version 1.1: 2016-11-16
    Changes: Database references
  • Version 1.2: 2016-11-30
    Changes: Database references