5T0G

Structural basis for dynamic regulation of the human 26S proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 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: 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 ...

    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 Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6A [auth G]245Homo sapiensMutation(s): 0 
Gene Names: PSMA6PROS27
EC: 3.4.25.1
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2B [auth H]233Homo sapiensMutation(s): 0 
Gene Names: PSMA2HC3PSC3
EC: 3.4.25.1
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4C [auth I]260Homo sapiensMutation(s): 0 
Gene Names: PSMA4HC9PSC9
EC: 3.4.25.1
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-7D [auth J]247Homo sapiensMutation(s): 0 
Gene Names: PSMA7HSPC
EC: 3.4.25.1
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5E [auth K]240Homo sapiensMutation(s): 0 
Gene Names: PSMA5
EC: 3.4.25.1
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1F [auth L]268Homo sapiensMutation(s): 0 
Gene Names: PSMA1HC2NUPROS30PSC2
EC: 3.4.25.1
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3G [auth M]254Homo sapiensMutation(s): 0 
Gene Names: PSMA3HC8PSC8
EC: 3.4.25.1
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-6H [auth N]238Homo sapiensMutation(s): 0 
Gene Names: PSMB6LMPYY
EC: 3.4.25.1
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-7I [auth O]276Homo sapiensMutation(s): 0 
Gene Names: PSMB7Z
EC: 3.4.25.1
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Entity ID: 10
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Proteasome subunit beta type-3J [auth P]204Homo sapiensMutation(s): 0 
Gene Names: PSMB3
EC: 3.4.25.1
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Entity ID: 11
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Proteasome subunit beta type-2K [auth Q]201Homo sapiensMutation(s): 0 
Gene Names: PSMB2
EC: 3.4.25.1
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-5L [auth R]262Homo sapiensMutation(s): 0 
Gene Names: PSMB5LMPXMB1X
EC: 3.4.25.1
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-1M [auth S]240Homo sapiensMutation(s): 0 
Gene Names: PSMB1PSC5
EC: 3.4.25.1
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Entity ID: 14
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Proteasome subunit beta type-4N [auth T]263Homo sapiensMutation(s): 0 
Gene Names: PSMB4PROS26
EC: 3.4.25.1
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Entity ID: 15
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26S protease regulatory subunit 7O [auth A]433Homo sapiensMutation(s): 0 
Gene Names: PSMC2MSS1
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Entity ID: 16
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26S protease regulatory subunit 4P [auth B]440Homo sapiensMutation(s): 0 
Gene Names: PSMC1
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetailsImage
26S protease regulatory subunit 6BQ [auth D]418Homo sapiensMutation(s): 0 
Gene Names: PSMC4MIP224TBP7
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Entity ID: 18
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26S protease regulatory subunit 10BR [auth E]403Homo sapiensMutation(s): 0 
Gene Names: PSMC6SUG2
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Entity ID: 19
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26S protease regulatory subunit 6AS [auth F]439Homo sapiensMutation(s): 0 
Gene Names: PSMC3TBP1
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Entity ID: 20
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26S protease regulatory subunit 8T [auth C]398Homo sapiensMutation(s): 0 
Gene Names: PSMC5SUG1
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Entity ID: 21
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 1U953Homo sapiensMutation(s): 0 
Gene Names: PSMD1
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Entity ID: 22
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26S proteasome non-ATPase regulatory subunit 3V533Homo sapiensMutation(s): 0 
Gene Names: PSMD3
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Entity ID: 23
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26S proteasome non-ATPase regulatory subunit 12W456Homo sapiensMutation(s): 0 
Gene Names: PSMD12
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Entity ID: 24
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26S proteasome non-ATPase regulatory subunit 11X422Homo sapiensMutation(s): 0 
Gene Names: PSMD11
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Entity ID: 25
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 6Y389Homo sapiensMutation(s): 0 
Gene Names: PSMD6KIAA0107PFAAP4
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Entity ID: 26
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 7Z324Homo sapiensMutation(s): 0 
Gene Names: PSMD7MOV34L
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Entity ID: 27
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26S proteasome non-ATPase regulatory subunit 13AA [auth a]376Homo sapiensMutation(s): 0 
Gene Names: PSMD13
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Entity ID: 28
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 4BA [auth b]377Homo sapiensMutation(s): 0 
Gene Names: PSMD4MCB1
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Entity ID: 29
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome non-ATPase regulatory subunit 14CA [auth c]309Homo sapiensMutation(s): 0 
Gene Names: PSMD14POH1
EC: 3.4.19
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Entity ID: 30
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26S proteasome non-ATPase regulatory subunit 8DA [auth d]349Homo sapiensMutation(s): 0 
Gene Names: PSMD8
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Entity ID: 31
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26S proteasome complex subunit DSS1EA [auth e]70Homo sapiensMutation(s): 0 
Gene Names: SEM1C7orf76DSS1SHFDG1SHFM1
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Entity ID: 32
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26S proteasome non-ATPase regulatory subunit 2FA [auth f]749Homo sapiensMutation(s): 0 
Gene Names: PSMD2TRAP2
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 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