1G65

Crystal structure of epoxomicin:20s proteasome reveals a molecular basis for selectivity of alpha,beta-epoxyketone proteasome inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.336 
  • R-Value Work: 0.283 
  • R-Value Observed: 0.286 

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Literature

Crystal Structure of Epoxomicin:20S Proteasome reveals a molecular basis for selectivity of alpha,beta-Epoxyketone Proteasome Inhibitors

Groll, M.Kim, K.B.Kairies, N.Crews, C.

(2000) J Am Chem Soc 122: 1237-1238


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component Y7
A, O
250Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component Y13
B, P
244Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE6
C, Q
241Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP2
D, R
242Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE5
E, S
233Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C1
F, T
244Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C7-alpha
G, U
243Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP1
H, V
222Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PUP3
I, W
204Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C11
J, X
198Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE2
K, Y
212Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component C5
L, Z
222Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE4AA [auth 1],
M
233Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasome component PRE3BA [auth 2],
N
196Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 3.4.25.1
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
EPOXOMICIN (peptide inhibitor)CA [auth 3],
DA [auth 4]
5N/AMutation(s): 0 
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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.336 
  • R-Value Work: 0.283 
  • R-Value Observed: 0.286 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.2α = 90
b = 300.2β = 112.98
c = 144.02γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 2.0: 2023-11-15
    Changes: Advisory, Atomic model, Data collection, Derived calculations