4JSQ

Yeast 20S proteasome in complex with the dimerized linear mimetic of TMC-95A - yCP:4e


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.236 

Starting Model: experimental
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This is version 2.0 of the entry. See complete history


Literature

Dimerized linear mimics of a natural cyclopeptide (TMC-95A) are potent noncovalent inhibitors of the eukaryotic 20S proteasome

Desvergne, A.Genin, E.Marechal, X.Gallastegui, N.Dufau, L.Richy, N.Groll, M.Vidal, J.Reboud-Ravaux, M.

(2013) J Med Chem 56: 3367-3378

  • DOI: https://doi.org/10.1021/jm4002007
  • Primary Citation of Related Structures:  
    4JSQ, 4JSU, 4JT0

  • PubMed Abstract: 

    Noncovalent proteasome inhibitors introduce an alternative mechanism of inhibition to that of covalent inhibitors used in cancer therapy. Starting from a noncovalent linear mimic of TMC-95A, a series of dimerized inhibitors using polyaminohexanoic acid spacers has been designed and optimized to target simultaneously two of the six active sites of the eukaryotic 20S proteasome. The homodimerized compounds actively inhibited chymotrypsin-like (Ki = 6-11 nM) and trypsin-like activities, whereas postacid activity was poorly modified. The noncovalent binding mode was ascertained by X-ray crystallography of the inhibitors complexed with the yeast 20S proteasome. The inhibition of proteasomal activities in human cells was evaluated. The use of the multivalency inhibitor concept has produced highly efficient and selective noncovalent compounds (no inhibition of calpain and cathepsin) that have potential therapeutic advantages compared to covalent binders such as bortezomib and carfilzomib.


  • Organizational Affiliation

    Enzymologie Moléculaire et Fonctionnelle, UR4, University Paris 6, Pierre et Marie Curie, UPMC-Sorbonne Universités, Case 256, 7 Quai Saint Bernard, 75252 Paris Cedex 05, France.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-2
A, O
250Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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UniProt GroupP23639
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-3
B, P
258Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
UniProt
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-4
C, Q
254Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-5
D, R
260Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-6
E, S
234Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Probable proteasome subunit alpha type-7
F, T
288Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit alpha type-1
G, U
252Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-2
H, V
232Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-3
I, W
205Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-4
J, X
198Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-5
K, Y
212Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-6
L, Z
222Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-7AA [auth a],
M
233Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome subunit beta type-1BA [auth b],
N
196Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
TMC-95A mimic ligand yCP:4eCA [auth c],
DA [auth d]
8N/AMutation(s): 0 
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Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES

Download Ideal Coordinates CCD File 
EA [auth K],
FA [auth Y]
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
RE0
Query on RE0
CA [auth c],
DA [auth d]
L-PEPTIDE LINKINGC11 H12 N2 O4TRP
TY5
Query on TY5
CA [auth c],
DA [auth d]
L-PEPTIDE LINKINGC16 H17 N O3TYR
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.236 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.77α = 90
b = 300.22β = 112.86
c = 144.26γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-01
    Type: Initial release
  • Version 1.1: 2014-04-23
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Derived calculations