6R70

Endogeneous native human 20S 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 1.4 of the entry. See complete history

Literature

Microfluidic protein isolation and sample preparation for high-resolution cryo-EM.

Schmidli, C.Albiez, S.Rima, L.Righetto, R.Mohammed, I.Oliva, P.Kovacik, L.Stahlberg, H.Braun, T.

(2019) Proc.Natl.Acad.Sci.USA 116: 15007-15012

  • DOI: 10.1073/pnas.1907214116
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often involving harsh and lengthy procedures. In contrast ...

    High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often involving harsh and lengthy procedures. In contrast, the several thousand to a few million protein particles required for structure determination by cryogenic electron microscopy (cryo-EM) can be provided by miniaturized systems. Here, we present a microfluidic method for the rapid isolation of a target protein and its direct preparation for cryo-EM. Less than 1 μL of cell lysate is required as starting material to solve the atomic structure of the untagged, endogenous human 20S proteasome. Our work paves the way for high-throughput structure determination of proteins from minimal amounts of cell lysate and opens more opportunities for the isolation of sensitive, endogenous protein complexes.


    Organizational Affiliation

    Center for Cellular Imaging and Nanoanalytics, Biozentrum, 4058 Basel, Switzerland.,Center for Cellular Imaging and Nanoanalytics, Biozentrum, 4058 Basel, Switzerland; thomas.braun@unibas.ch.,Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-4
M, a
216Homo 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit alpha type-2
A, O
230Homo 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
B, P
248Homo 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
C, Q
237Homo 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
D, R
233Homo 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
E, S
238Homo 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
F, T
240Homo 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 alpha type-6
G, U
244Homo 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: 9
MoleculeChainsSequence LengthOrganismDetails
Proteasome subunit beta type-7
H, V
220Homo 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
I, W
204Homo 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
J, X
196Homo 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
K, Y
201Homo 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
L, Z
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-6
N, b
203Homo 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
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland200021_162521
Swiss National Science FoundationSwitzerland205320_166164

Revision History 

  • Version 1.0: 2019-07-03
    Type: Initial release
  • Version 1.1: 2019-07-17
    Type: Data collection, Database references
  • Version 1.2: 2019-07-24
    Type: Data collection, Database references
  • Version 1.3: 2019-07-31
    Type: Data collection, Database references
  • Version 1.4: 2019-12-18
    Type: Other