6R70

Endogeneous native human 20S proteasome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 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 U S A 116: 15007-15012

  • DOI: 10.1073/pnas.1907214116
  • Primary Citation of Related Structures:  
    6R70, 6R7M

  • 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, 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 ...

    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; thomas.braun@unibas.ch.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-4A [auth M],
AA [auth a]
216Homo sapiensMutation(s): 0 
Gene Names: PSMB4PROS26
EC: 3.4.25.1
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UniProt GroupP28070
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2B [auth A],
O
230Homo sapiensMutation(s): 0 
Gene Names: PSMA2HC3PSC3
EC: 3.4.25.1
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4C [auth B],
P
248Homo sapiensMutation(s): 0 
Gene Names: PSMA4HC9PSC9
EC: 3.4.25.1
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-7D [auth C],
Q
237Homo sapiensMutation(s): 0 
Gene Names: PSMA7HSPC
EC: 3.4.25.1
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5E [auth D],
R
233Homo sapiensMutation(s): 0 
Gene Names: PSMA5
EC: 3.4.25.1
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1F [auth E],
S
238Homo sapiensMutation(s): 0 
Gene Names: PSMA1HC2NUPROS30PSC2
EC: 3.4.25.1
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3G [auth F],
T
240Homo sapiensMutation(s): 0 
Gene Names: PSMA3HC8PSC8
EC: 3.4.25.1
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6H [auth G],
U
244Homo sapiensMutation(s): 0 
Gene Names: PSMA6PROS27
EC: 3.4.25.1
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-7I [auth H],
V
220Homo sapiensMutation(s): 0 
Gene Names: PSMB7Z
EC: 3.4.25.1
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-3J [auth I],
W
204Homo sapiensMutation(s): 0 
Gene Names: PSMB3
EC: 3.4.25.1
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Find proteins for P49720 (Homo sapiens)
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-2K [auth J],
X
196Homo sapiensMutation(s): 0 
Gene Names: PSMB2
EC: 3.4.25.1
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-5L [auth K],
Y
201Homo sapiensMutation(s): 0 
Gene Names: PSMB5LMPXMB1X
EC: 3.4.25.1
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-1M [auth L],
Z
213Homo sapiensMutation(s): 0 
Gene Names: PSMB1PSC5
EC: 3.4.25.1
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-6N,
BA [auth b]
203Homo sapiensMutation(s): 0 
Gene Names: PSMB6LMPYY
EC: 3.4.25.1
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland200021_162521
Swiss National Science FoundationSwitzerland205320_166164

Revision History  (Full details and data files)

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