4AP4

Rnf4 - ubch5a - ubiquitin heterotrimeric complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Structure of a Ring E3 Ligase and Ubiquitin-Loaded E2 Primed for Catalysis

Plechanovova, A.Jaffray, E.Tatham, M.H.Naismith, J.H.Hay, R.T.

(2012) Nature 489: 115

  • DOI: https://doi.org/10.1038/nature11376
  • Primary Citation of Related Structures:  
    4AP4

  • PubMed Abstract: 

    Ubiquitin modification is mediated by a large family of specificity determining ubiquitin E3 ligases. To facilitate ubiquitin transfer, RING E3 ligases bind both substrate and a ubiquitin E2 conjugating enzyme linked to ubiquitin via a thioester bond, but the mechanism of transfer has remained elusive. Here we report the crystal structure of the dimeric RING domain of rat RNF4 in complex with E2 (UbcH5A) linked by an isopeptide bond to ubiquitin. While the E2 contacts a single protomer of the RING, ubiquitin is folded back onto the E2 by contacts from both RING protomers. The carboxy-terminal tail of ubiquitin is locked into an active site groove on the E2 by an intricate network of interactions, resulting in changes at the E2 active site. This arrangement is primed for catalysis as it can deprotonate the incoming substrate lysine residue and stabilize the consequent tetrahedral transition-state intermediate.


  • Organizational Affiliation

    Wellcome Trust Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 UBIQUITIN LIGASE RNF4133Rattus norvegicusMutation(s): 0 
EC: 6.3.2
UniProt
Find proteins for O88846 (Rattus norvegicus)
Explore O88846 
Go to UniProtKB:  O88846
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO88846
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUITIN-CONJUGATING ENZYME E2 D1B,
D [auth E]
153Homo sapiensMutation(s): 2 
EC: 6.3.2.19
UniProt & NIH Common Fund Data Resources
Find proteins for P51668 (Homo sapiens)
Explore P51668 
Go to UniProtKB:  P51668
GTEx:  ENSG00000072401 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51668
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUITIN CC,
E [auth F]
80Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
GTEx:  ENSG00000150991 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0CG48
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.48α = 90
b = 65.09β = 90
c = 189.65γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2012-09-12
    Changes: Database references, Structure summary
  • Version 1.2: 2012-10-10
    Changes: Database references
  • Version 1.3: 2017-06-28
    Changes: Data collection
  • Version 1.4: 2019-07-31
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.5: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description