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An atomic structure of the human 26S proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An atomic structure of the human 26S proteasome.

Huang, X.Luan, B.Wu, J.Shi, Y.

(2016) Nat. Struct. Mol. Biol. 23: 778-785

  • DOI: 10.1038/nsmb.3273
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We report the cryo-EM structure of the human 26S proteasome at an average resolution of 3.5 Å, allowing atomic modeling of 28 subunits in the core particle (CP) and 18 subunits in the regulatory particle (RP). The C-terminal residues of Rpt3 and Rpt5 ...

    We report the cryo-EM structure of the human 26S proteasome at an average resolution of 3.5 Å, allowing atomic modeling of 28 subunits in the core particle (CP) and 18 subunits in the regulatory particle (RP). The C-terminal residues of Rpt3 and Rpt5 subunits in the RP can be seen inserted into surface pockets formed between adjacent α subunits in the CP. Each of the six Rpt subunits contains a bound nucleotide, and the central gate of the CP α-ring is closed despite RP association. The six pore 1 loops in the Rpt ring are arranged similarly to a spiral staircase along the axial channel of substrate transport, which is constricted by the pore 2 loops. We also determined the cryo-EM structure of the human proteasome bound to the deubiquitinating enzyme USP14 at 4.35-Å resolution. Together, our structures provide a framework for mechanistic understanding of eukaryotic proteasome function.


    Organizational Affiliation

    Ministry of Education Key Laboratory of Protein Science, School of Life Sciences, Tsinghua University, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 4
I, w
440Homo sapiensMutation(s): 0 
Gene Names: PSMC1
Find proteins for P62191 (Homo sapiens)
Go to Gene View: PSMC1
Go to UniProtKB:  P62191
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 7
H, v
433Homo sapiensMutation(s): 0 
Gene Names: PSMC2 (MSS1)
Find proteins for P35998 (Homo sapiens)
Go to Gene View: PSMC2
Go to UniProtKB:  P35998
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 10B
L, z
389Homo sapiensMutation(s): 0 
Gene Names: PSMC6 (SUG2)
Find proteins for P62333 (Homo sapiens)
Go to Gene View: PSMC6
Go to UniProtKB:  P62333
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 6A
M, 0
439Homo sapiensMutation(s): 0 
Gene Names: PSMC3 (TBP1)
Find proteins for P17980 (Homo sapiens)
Go to Gene View: PSMC3
Go to UniProtKB:  P17980
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 8
J, x
406Homo sapiensMutation(s): 0 
Gene Names: PSMC5 (SUG1)
Find proteins for P62195 (Homo sapiens)
Go to Gene View: PSMC5
Go to UniProtKB:  P62195
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
26S protease regulatory subunit 6B
K, y
418Homo sapiensMutation(s): 0 
Gene Names: PSMC4 (MIP224, TBP7)
Find proteins for P43686 (Homo sapiens)
Go to Gene View: PSMC4
Go to UniProtKB:  P43686
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 1
N, 1
953Homo sapiensMutation(s): 0 
Gene Names: PSMD1
Find proteins for Q99460 (Homo sapiens)
Go to Gene View: PSMD1
Go to UniProtKB:  Q99460
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 13
O, 2
376Homo sapiensMutation(s): 0 
Gene Names: PSMD13
Find proteins for Q9UNM6 (Homo sapiens)
Go to Gene View: PSMD13
Go to UniProtKB:  Q9UNM6
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 12
P, 3
456Homo sapiensMutation(s): 0 
Gene Names: PSMD12
Find proteins for O00232 (Homo sapiens)
Go to Gene View: PSMD12
Go to UniProtKB:  O00232
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 11
Q, 4
422Homo sapiensMutation(s): 0 
Gene Names: PSMD11
Find proteins for O00231 (Homo sapiens)
Go to Gene View: PSMD11
Go to UniProtKB:  O00231
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 6
R, 5
389Homo sapiensMutation(s): 0 
Gene Names: PSMD6 (KIAA0107, PFAAP4)
Find proteins for Q15008 (Homo sapiens)
Go to Gene View: PSMD6
Go to UniProtKB:  Q15008
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 3
S, 6
525Homo sapiensMutation(s): 0 
Gene Names: PSMD3
Find proteins for O43242 (Homo sapiens)
Go to Gene View: PSMD3
Go to UniProtKB:  O43242
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 8
T, 7
350Homo sapiensMutation(s): 0 
Gene Names: PSMD8
Find proteins for P48556 (Homo sapiens)
Go to Gene View: PSMD8
Go to UniProtKB:  P48556
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 7
U, 8
324Homo sapiensMutation(s): 0 
Gene Names: PSMD7 (MOV34L)
Find proteins for P51665 (Homo sapiens)
Go to Gene View: PSMD7
Go to UniProtKB:  P51665
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 14
V, 9
310Homo sapiensMutation(s): 0 
Gene Names: PSMD14 (POH1)
EC: 3.4.19.-
Find proteins for O00487 (Homo sapiens)
Go to Gene View: PSMD14
Go to UniProtKB:  O00487
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 4
W, AA
377Homo sapiensMutation(s): 0 
Gene Names: PSMD4 (MCB1)
Find proteins for P55036 (Homo sapiens)
Go to Gene View: PSMD4
Go to UniProtKB:  P55036
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
26S proteasome complex subunit DSS1
Y, AB
70Homo sapiensMutation(s): 0 
Gene Names: SEM1 (C7orf76, DSS1, SHFDG1, SHFM1)
Find proteins for P60896 (Homo sapiens)
Go to Gene View: SEM1
Go to UniProtKB:  P60896
Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
26S proteasome non-ATPase regulatory subunit 2
Z, AC
908Homo sapiensMutation(s): 0 
Gene Names: PSMD2 (TRAP2)
Find proteins for Q13200 (Homo sapiens)
Go to Gene View: PSMD2
Go to UniProtKB:  Q13200
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-6
B, h
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: 20
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-2
C, i
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: 21
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-4
D, j
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: 22
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-7
E, k
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: 23
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-5
F, l
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: 24
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-1
G, m
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: 25
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-3
X, n
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: 26
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-6
a, o
239Homo 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: 27
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-7
b, p
277Homo 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: 28
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-3
c, q
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: 29
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-2
d, r
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: 30
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-5
e, s
263Homo 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: 31
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-1
f, t
241Homo 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: 32
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-4
g, u
264Homo 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
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
0, H, I, J, K, L, M, v, w, x, y, z
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 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
National Natural Science Foundation of ChinaChina31130002
National Natural Science Foundation of ChinaChina31321062
National Natural Science Foundation of ChinaChina31430020

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2017-04-05
    Type: Database references