5MPE

26S proteasome in presence of ATP (s2)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history. 


Literature

Structural insights into the functional cycle of the ATPase module of the 26S proteasome.

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

(2017) Proc Natl Acad Sci U S A 114: 1305-1310

  • DOI: 10.1073/pnas.1621129114
  • Primary Citation of Related Structures:  
    5MPA, 5MPC, 5MPB, 5MPE, 5MPD, 5MP9

  • PubMed Abstract: 

    • In eukaryotic cells, the ubiquitin-proteasome system (UPS) is responsible for the regulated degradation of intracellular proteins. The 26S holocomplex comprises the core particle (CP), where proteolysis takes place, and one or two regulatory particle ...

    In eukaryotic cells, the ubiquitin-proteasome system (UPS) is responsible for the regulated degradation of intracellular proteins. The 26S holocomplex comprises the core particle (CP), where proteolysis takes place, and one or two regulatory particles (RPs). The base of the RP is formed by a heterohexameric AAA + ATPase module, which unfolds and translocates substrates into the CP. Applying single-particle cryo-electron microscopy (cryo-EM) and image classification to samples in the presence of different nucleotides and nucleotide analogs, we were able to observe four distinct conformational states (s1 to s4). The resolution of the four conformers allowed for the construction of atomic models of the AAA + ATPase module as it progresses through the functional cycle. In a hitherto unobserved state (s4), the gate controlling access to the CP is open. The structures described in this study allow us to put forward a model for the 26S functional cycle driven by ATP hydrolysis.

    Organizational Affiliation: 

    Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany; baumeist@biochem.mpg.de sakata@biochem.mpg.de.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome regulatory subunit RPN10W268Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN10, MCB1, SUN1, YHR200W
Find proteins for P38886 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 2
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Ubiquitin carboxyl-terminal hydrolase RPN11V306Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN11, MPR1, YFR004W
EC: 3.4.19.12
Find proteins for P43588 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 3
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26S proteasome regulatory subunit RPN12T274Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN12, NIN1, YFR052W
Find proteins for P32496 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 4
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26S proteasome regulatory subunit RPN13X156Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN13, DAQ1, YLR421C
Find proteins for O13563 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
26S proteasome complex subunit SEM1Y89Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SEM1, DSH1, YDR363W-A
Find proteins for O94742 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 6
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26S proteasome regulatory subunit RPN1Z993Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN1, HRD2, NAS1, RPD1, YHR027C
Find proteins for P38764 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 7
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26S proteasome regulatory subunit RPN2N945Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN2, SEN3, YIL075C
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Entity ID: 8
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26S proteasome regulatory subunit RPN3S523Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN3, SUN2, YER021W
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Entity ID: 9
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26S proteasome regulatory subunit RPN5P445Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN5, NAS5, YDL147W, D1572
Find proteins for Q12250 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 10
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26S proteasome regulatory subunit RPN6Q434Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN6, NAS4, YDL097C, D2381
Find proteins for Q12377 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 11
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26S proteasome regulatory subunit RPN7R429Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN7, YPR108W, P8283.8
Find proteins for Q06103 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 12
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26S proteasome regulatory subunit RPN8U338Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN8, YOR261C, O5360
Find proteins for Q08723 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 13
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26S proteasome regulatory subunit RPN9O393Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPN9, NAS7, YDR427W, D9461.14
Find proteins for Q04062 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
German Research FoundationGermanySFB-1035
National Science FoundationUnited StatesPHY1430124
National Institutes of HealthUnited States9P41GM104601

Revision History 

  • Version 1.0: 2017-03-08
    Type: Initial release
  • Version 1.1: 2017-08-02
    Changes: Data collection
  • Version 1.2: 2018-10-24
    Changes: Advisory, Data collection, Derived calculations