6RGQ

Human 20S Proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.6 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:  

  • 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 recomb ...

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-6
A, O
246Homo sapiensMutation(s): 0 
Gene Names: PSMA6 (PROS27)
EC: 3.4.25.1
Find proteins for P60900 (Homo sapiens)
Go to Gene View: PSMA6
Go to UniProtKB:  P60900
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-2
B, P
234Homo sapiensMutation(s): 0 
Gene Names: PSMA2 (HC3, PSC3)
EC: 3.4.25.1
Find proteins for P25787 (Homo sapiens)
Go to Gene View: PSMA2
Go to UniProtKB:  P25787
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-4
C, Q
261Homo sapiensMutation(s): 0 
Gene Names: PSMA4 (HC9, PSC9)
EC: 3.4.25.1
Find proteins for P25789 (Homo sapiens)
Go to Gene View: PSMA4
Go to UniProtKB:  P25789
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-7
D, R
248Homo sapiensMutation(s): 0 
Gene Names: PSMA7 (HSPC)
EC: 3.4.25.1
Find proteins for O14818 (Homo sapiens)
Go to Gene View: PSMA7
Go to UniProtKB:  O14818
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-5
E, S
241Homo sapiensMutation(s): 0 
Gene Names: PSMA5
EC: 3.4.25.1
Find proteins for P28066 (Homo sapiens)
Go to Gene View: PSMA5
Go to UniProtKB:  P28066
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-1
F, T
263Homo sapiensMutation(s): 0 
Gene Names: PSMA1 (HC2, NU, PROS30, PSC2)
EC: 3.4.25.1
Find proteins for P25786 (Homo sapiens)
Go to Gene View: PSMA1
Go to UniProtKB:  P25786
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-3
G, U
255Homo sapiensMutation(s): 0 
Gene Names: PSMA3 (HC8, PSC8)
EC: 3.4.25.1
Find proteins for P25788 (Homo sapiens)
Go to Gene View: PSMA3
Go to UniProtKB:  P25788
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-6
H, V
205Homo sapiensMutation(s): 0 
Gene Names: PSMB6 (LMPY, Y)
EC: 3.4.25.1
Find proteins for P28072 (Homo sapiens)
Go to Gene View: PSMB6
Go to UniProtKB:  P28072
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-7
I, W
234Homo sapiensMutation(s): 0 
Gene Names: PSMB7 (Z)
EC: 3.4.25.1
Find proteins for Q99436 (Homo sapiens)
Go to Gene View: PSMB7
Go to UniProtKB:  Q99436
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-3
J, X
205Homo sapiensMutation(s): 0 
Gene Names: PSMB3
EC: 3.4.25.1
Find proteins for P49720 (Homo sapiens)
Go to Gene View: PSMB3
Go to UniProtKB:  P49720
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-2
K, Y
201Homo sapiensMutation(s): 0 
Gene Names: PSMB2
EC: 3.4.25.1
Find proteins for P49721 (Homo sapiens)
Go to Gene View: PSMB2
Go to UniProtKB:  P49721
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-5
L, Z
204Homo sapiensMutation(s): 0 
Gene Names: PSMB5 (LMPX, MB1, X)
EC: 3.4.25.1
Find proteins for P28074 (Homo sapiens)
Go to Gene View: PSMB5
Go to UniProtKB:  P28074
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-1
M, a
213Homo sapiensMutation(s): 0 
Gene Names: PSMB1 (PSC5)
EC: 3.4.25.1
Find proteins for P20618 (Homo sapiens)
Go to Gene View: PSMB1
Go to UniProtKB:  P20618
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-4
N, b
219Homo sapiensMutation(s): 0 
Gene Names: PSMB4 (PROS26)
EC: 3.4.25.1
Find proteins for P28070 (Homo sapiens)
Go to Gene View: PSMB4
Go to UniProtKB:  P28070
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Data collection, Database references
  • Version 1.2: 2019-10-16
    Type: Data collection, Database references