3HYE

Crystal structure of 20S proteasome in complex with hydroxylated salinosporamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Snapshots of the fluorosalinosporamide/20S complex offer mechanistic insights for fine tuning proteasome inhibition

Groll, M.McArthur, K.A.Macherla, V.R.Manam, R.R.Potts, B.C.

(2009) J Med Chem 52: 5420-5428

  • DOI: https://doi.org/10.1021/jm900559x
  • Primary Citation of Related Structures:  
    3GPT, 3GPW, 3HYE

  • PubMed Abstract: 

    Many marketed drugs contain fluorine, reflecting its ability to modulate a variety of biological responses. The unique 20S proteasome inhibition profile of fluorosalinosporamide compared to chlorinated anticancer agent salinosporamide A (NPI-0052) is exemplary and relates to each halogen's leaving group potential. Crystal structures of fluoro-, hydroxy-, and bromosalinosporamide in complex with the yeast 20S proteasome core particle (CP) provide mechanistic insights into ligand binding and leaving group elimination and the ability to fine-tune the duration of proteasome inhibition. Fluorosalinosporamide/CP crystal structures determined over time offer striking snapshots of the ligand trapped with an intact fluoroethyl group in anticipation of fluoride elimination, followed by complete nucleophilic displacement of fluoride to give the highly stabilized cyclic ether found for salinosporamide A and bromosalinosporamide. This two-step reaction pathway is consistent with a mechanism for partially reversible proteasome inhibition by fluorosalinosporamide. Proteasome catalyzed fluoride displacement provides preliminary insights into the active site Thr1N pK(a).


  • Organizational Affiliation

    Center for Integrated Protein Science at the Department of Chemistry, Lehrstuhl für Biochemie, Technische Universität München, Garching, Germany. michael.groll@ch.tum.de


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component Y7
A, O
250Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P23639 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P23639 
Go to UniProtKB:  P23639
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23639
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component Y13
B, P
244Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P23638 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P23638 
Go to UniProtKB:  P23638
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23638
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE6
C, Q
241Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P40303 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40303 
Go to UniProtKB:  P40303
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP40303
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP2
D, R
242Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P32379 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32379 
Go to UniProtKB:  P32379
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP32379
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE5
E, S
233Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P40302 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40302 
Go to UniProtKB:  P40302
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP40302
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C1
F, T
244Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P21242 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P21242 
Go to UniProtKB:  P21242
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21242
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C7-alpha
G, U
243Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P21243 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P21243 
Go to UniProtKB:  P21243
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21243
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP1
H, V
222Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P25043 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P25043 
Go to UniProtKB:  P25043
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25043
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP3
I, W
204Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P25451 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P25451 
Go to UniProtKB:  P25451
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25451
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C11
J, X
198Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P22141 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P22141 
Go to UniProtKB:  P22141
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22141
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE2
K, Y
212Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P30656 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P30656 
Go to UniProtKB:  P30656
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30656
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C5
L, Z
222Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P23724 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P23724 
Go to UniProtKB:  P23724
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23724
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE4AA [auth 1],
M
233Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P30657 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P30657 
Go to UniProtKB:  P30657
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30657
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE3BA [auth 2],
N
196Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.25.1
UniProt
Find proteins for P38624 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P38624 
Go to UniProtKB:  P38624
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP38624
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.83α = 90
b = 300.93β = 113.11
c = 144.65γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
CNSrefinement
XDSdata reduction
XSCALEdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description