6RGQ

Human 20S Proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.60 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

Characterization of Fully Recombinant Human 20S and 20S-PA200 Proteasome Complexes.

Toste Rego, A.da Fonseca, P.C.A.

(2019) Mol Cell 76: 138-147.e5

  • DOI: 10.1016/j.molcel.2019.07.014
  • Primary Citation of Related Structures:  
    6REY, 6RGQ

  • PubMed Abstract: 
  • Proteasomes are essential in all eukaryotic cells. However, their function and regulation remain considerably elusive, particularly those of less abundant variants. We demonstrate the human 20S proteasome recombinant assembly and confirmed the recombinan ...

    Proteasomes are essential in all eukaryotic cells. However, their function and regulation remain considerably elusive, particularly those of less abundant variants. We demonstrate the human 20S proteasome recombinant assembly and confirmed the recombinant complex integrity biochemically and with a 2.6 Å resolution cryo-EM map. To assess its competence to form higher-order assemblies, we prepared and analyzed recombinant human 20S-PA200, a poorly characterized nuclear complex. Its 3.0 Å resolution cryo-EM structure reveals the PA200 unique architecture; the details of its intricate interactions with the proteasome, resulting in unparalleled proteasome α ring rearrangements; and the molecular basis for PA200 allosteric modulation of the proteasome active sites. Non-protein cryo-EM densities could be assigned to PA200-bound inositol phosphates, and we speculate regarding their functional role. Here we open extensive opportunities to study the fundamental properties of the diverse and distinct eukaryotic proteasome variants and to improve proteasome targeting under different therapeutic conditions.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK. Electronic address: pauladf@mrc-lmb.cam.ac.uk.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6 AO246Homo sapiensMutation(s): 0 
Gene Names: PSMA6PROS27
EC: 3.4.25.1
Find proteins for P60900 (Homo sapiens)
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2 BP234Homo sapiensMutation(s): 0 
Gene Names: PSMA2HC3PSC3
EC: 3.4.25.1
Find proteins for P25787 (Homo sapiens)
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PHAROS:  P25787
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4 CQ261Homo sapiensMutation(s): 0 
Gene Names: PSMA4HC9PSC9
EC: 3.4.25.1
Find proteins for P25789 (Homo sapiens)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-7 DR248Homo sapiensMutation(s): 0 
Gene Names: PSMA7HSPC
EC: 3.4.25.1
Find proteins for O14818 (Homo sapiens)
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PHAROS:  O14818
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5 ES241Homo sapiensMutation(s): 0 
Gene Names: PSMA5
EC: 3.4.25.1
Find proteins for P28066 (Homo sapiens)
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1 FT263Homo sapiensMutation(s): 0 
Gene Names: PSMA1HC2NUPROS30PSC2
EC: 3.4.25.1
Find proteins for P25786 (Homo sapiens)
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3 GU255Homo sapiensMutation(s): 0 
Gene Names: PSMA3HC8PSC8
EC: 3.4.25.1
Find proteins for P25788 (Homo sapiens)
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-6 HV205Homo sapiensMutation(s): 0 
Gene Names: PSMB6LMPYY
EC: 3.4.25.1
Find proteins for P28072 (Homo sapiens)
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-7 IW234Homo sapiensMutation(s): 0 
Gene Names: PSMB7Z
EC: 3.4.25.1
Find proteins for Q99436 (Homo sapiens)
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-3 JX205Homo sapiensMutation(s): 0 
Gene Names: PSMB3
EC: 3.4.25.1
Find proteins for P49720 (Homo sapiens)
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-2 KY201Homo sapiensMutation(s): 0 
Gene Names: PSMB2
EC: 3.4.25.1
Find proteins for P49721 (Homo sapiens)
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-5 LZ204Homo sapiensMutation(s): 0 
Gene Names: PSMB5LMPXMB1X
EC: 3.4.25.1
Find proteins for P28074 (Homo sapiens)
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-1 Ma213Homo sapiensMutation(s): 0 
Gene Names: PSMB1PSC5
EC: 3.4.25.1
Find proteins for P20618 (Homo sapiens)
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PHAROS:  P20618
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-4 Nb219Homo sapiensMutation(s): 0 
Gene Names: PSMB4PROS26
EC: 3.4.25.1
Find proteins for P28070 (Homo sapiens)
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_UP_1201/5

Revision History 

  • Version 1.0: 2019-09-04
    Type: Initial release
  • Version 1.1: 2019-09-11
    Changes: Data collection, Database references
  • Version 1.2: 2019-10-16
    Changes: Data collection, Database references