4R3O

Human Constitutive 20S Proteasome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of the Human 20S Proteasome in Complex with Carfilzomib.

Harshbarger, W.Miller, C.Diedrich, C.Sacchettini, J.

(2015) Structure 23: 418-424

  • DOI: 10.1016/j.str.2014.11.017
  • Primary Citation of Related Structures:  
    4R3O, 4R67

  • PubMed Abstract: 
  • Proteasome inhibition is highly effective as a treatment for multiple myeloma, and recently carfilzomib was granted US FDA approval for the treatment of relapsed and refractory multiple myeloma. Here, we report the X-ray crystal structure of the human constitutive 20S proteasome with and without carfilzomib bound at 2 ...

    Proteasome inhibition is highly effective as a treatment for multiple myeloma, and recently carfilzomib was granted US FDA approval for the treatment of relapsed and refractory multiple myeloma. Here, we report the X-ray crystal structure of the human constitutive 20S proteasome with and without carfilzomib bound at 2.9 and 2.6 Å, respectively. Our data indicate that the S3 and S4 binding pockets play a pivotal role in carfilzomib's selectivity for chymotrypsin-like sites. Structural comparison with the mouse immunoproteasome crystal structure reveals amino acid substitutions that explain carfilzomib's slight preference for chymotrypsin-like subunits of constitutive proteasomes. In addition, comparison of the human proteasome:carfilzomib complex with the mouse proteasome:PR-957 complex reveals new details that explain why PR-957 is selective for immunoproteasomes. Together, the data presented here support the design of inhibitors for either constitutive or immunoproteasomes, with implications for the treatment of cancers as well as autoimmune and neurodegenerative diseases.


    Organizational Affiliation

    Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA; Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77842-3012, USA. Electronic address: sacchett@tamu.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6 AO244Homo 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 BP233Homo 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 CQ250Homo 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 DR243Homo 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 ES234Homo 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 FT238Homo 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 GU245Homo 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 HV202Homo 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 IW220Homo 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 JX204Homo 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 KY199Homo 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 LZ201Homo 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 1M213Homo sapiensMutation(s): 0 
Gene Names: PSMB1PSC5
EC: 3.4.25.1
Find proteins for P20618 (Homo sapiens)
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Proteasome subunit beta type-4 2N217Homo 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: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.227α = 90
b = 205.061β = 106.37
c = 163.128γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data collection
HKL-3000data reduction
SCALEPACKdata scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-28
    Type: Initial release
  • Version 1.1: 2015-02-04
    Changes: Database references
  • Version 1.2: 2015-02-18
    Changes: Database references