3A33

UbcH5b~Ubiquitin Conjugate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of UbcH5b~Ubiquitin Intermediate: Insight into the Formation of the Self-Assembled E2~Ub Conjugates

Sakata, E.Satoh, T.Yamamoto, S.Yamaguchi, Y.Yagi-Utsumi, M.Kurimoto, E.Tanaka, K.Wakatsuki, S.Kato, K.

(2010) Structure 18: 138-147

  • DOI: 10.1016/j.str.2009.11.007
  • Primary Citation of Related Structures:  
    3A33

  • PubMed Abstract: 
  • E2 ubiquitin-conjugating enzymes catalyze the attachment of ubiquitin to lysine residues of target proteins. The UbcH5b E2 enzyme has been shown to play a key role in the initiation of the ubiquitination of substrate proteins upon action of several E ...

    E2 ubiquitin-conjugating enzymes catalyze the attachment of ubiquitin to lysine residues of target proteins. The UbcH5b E2 enzyme has been shown to play a key role in the initiation of the ubiquitination of substrate proteins upon action of several E3 ligases. Here we have determined the 2.2 A crystal structure of an intermediate of UbcH5b~ubiquitin (Ub) conjugate, which is assembled into an infinite spiral through the backside interaction. This active complex may provide multiple E2 active sites, enabling efficient ubiquitination of substrates. Indeed, biochemical assays support a model in which the self-assembled UbcH5b~Ub can serve as a bridge for the gap between the lysine residue of the substrate and the catalytic cysteine of E2.


    Organizational Affiliation

    Department of Structural Biology and Biomolecular Engineering, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-conjugating enzyme E2 D2A150Homo sapiensMutation(s): 0 
Gene Names: UBCH5BUBE2D2PUBC1UBC4UBC5BUBCH4
EC: 6.3.2.19 (PDB Primary Data), 2.3.2.23 (UniProt), 2.3.2.24 (UniProt)
Find proteins for P62837 (Homo sapiens)
Explore P62837 
Go to UniProtKB:  P62837
NIH Common Fund Data Resources
PHAROS  P62837
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
UbiquitinB76Homo sapiensMutation(s): 0 
Gene Names: UBC
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
NIH Common Fund Data Resources
PHAROS  P0CG48
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.231 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.5α = 90
b = 72.5β = 90
c = 176.6γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance