1G0U

A GATED CHANNEL INTO THE PROTEASOME CORE PARTICLE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.260 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A gated channel into the proteasome core particle.

Groll, M.Bajorek, M.Kohler, A.Moroder, L.Rubin, D.M.Huber, R.Glickman, M.H.Finley, D.

(2000) Nat Struct Biol 7: 1062-1067

  • DOI: 10.1038/80992
  • Primary Citation of Related Structures:  
    1G0U

  • PubMed Abstract: 
  • The core particle (CP) of the yeast proteasome is composed of four heptameric rings of subunits arranged in a hollow, barrel-like structure. We report that the CP is autoinhibited by the N-terminal tails of the outer (alpha) ring subunits. Crystallographic analysis showed that deletion of the tail of the alpha 3-subunit opens a channel into the proteolytically active interior chamber of the CP, thus derepressing peptide hydrolysis ...

    The core particle (CP) of the yeast proteasome is composed of four heptameric rings of subunits arranged in a hollow, barrel-like structure. We report that the CP is autoinhibited by the N-terminal tails of the outer (alpha) ring subunits. Crystallographic analysis showed that deletion of the tail of the alpha 3-subunit opens a channel into the proteolytically active interior chamber of the CP, thus derepressing peptide hydrolysis. In the latent state of the particle, the tails prevent substrate entry by imposing topological closure on the CP. Inhibition by the alpha-subunit tails is relieved upon binding of the regulatory particle to the CP to form the proteasome holoenzyme.


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, D-82152 Martinsried, Germany. groll@biochem.mdg.de



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEASOME COMPONENT Y7A, O250Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 2
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PROTEASOME COMPONENT Y13B, P245Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 3
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PROTEASOME COMPONENT PRE6C, Q243Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 4
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PROTEASOME COMPONENT PUP2D, R241Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 5
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PROTEASOME COMPONENT PRE5E, S234Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 6
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PROTEASOME COMPONENT C1F, T248Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 7
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PROTEASOME COMPONENT C7-ALPHAG, U252Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46
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Entity ID: 8
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PROTEASOME COMPONENT PUP1H, V222Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 9
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PROTEASOME COMPONENT PUP3I, W205Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 10
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PROTEASOME COMPONENT C11J, X198Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 11
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PROTEASOME COMPONENT PRE2K, Y212Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 12
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PROTEASOME COMPONENT C5L, Z241Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 13
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PROTEASOME COMPONENT PRE4AA [auth 1], M266Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEASOME COMPONENT PRE3BA [auth 2], N196Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.4.99.46 (PDB Primary Data), 3.4.25.1 (UniProt)
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Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
CA [auth F] , DA [auth G] , EA [auth G] , FA [auth H] , GA [auth I] , HA [auth I] , IA [auth K] , JA [auth L] , 
CA [auth F], DA [auth G], EA [auth G], FA [auth H], GA [auth I], HA [auth I], IA [auth K], JA [auth L], KA [auth L], LA [auth N], MA [auth T], NA [auth U], OA [auth U], PA [auth V], QA [auth W], RA [auth W], SA [auth Y], TA [auth Z], UA [auth Z], VA [auth 2]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.260 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.18α = 90
b = 301.1β = 113
c = 144.1γ = 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: 2000-11-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance