2Y4W

Solution structure of human ubiquitin conjugating enzyme Rad6b


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Symmetry and Asymmetry of the Ring-Ring Dimer of Rad18

Huang, A.Hibbert, R.G.Dejong, R.N.Das, D.Sixma, T.K.Boelens, R.

(2011) J Mol Biol 410: 424

  • DOI: https://doi.org/10.1016/j.jmb.2011.04.051
  • Primary Citation of Related Structures:  
    2Y43, 2Y4W

  • PubMed Abstract: 

    The human ubiquitin-conjugating enzyme Rad6 (E2), with ubiquitin ligase enzyme Rad18 (RING E3), monoubiquitinates proliferating cell nuclear antigen at stalled replication forks in DNA translesion synthesis. Here, we determine the structure of the homodimeric Rad18 RING domains by X-ray crystallography and classify it to RING-RING dimers that dimerize through helices adjacent to the RING domains and through the canonical RING domains. Using NMR spectroscopy and site-directed mutagenesis, we demonstrate that the Rad6b binding site, for the Rad18 RING domain, strongly resembles that of other E2/E3 RING/U-box complexes. We show that the homodimeric Rad18 RING domain can recruit two Rad6b E2 enzymes, whereas the full-length Rad18 homodimer binds only to a single Rad6b molecule. Such asymmetry is a common feature of RING-RING heterodimers and has been observed for the CHIP U-box homodimer. We propose that asymmetry may be a common feature of dimeric RING E3 ligases.


  • Organizational Affiliation

    Department of NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUITIN-CONJUGATING ENZYME E2 B152Homo sapiensMutation(s): 0 
EC: 6.3.2.19
UniProt & NIH Common Fund Data Resources
Find proteins for P63146 (Homo sapiens)
Explore P63146 
Go to UniProtKB:  P63146
PHAROS:  P63146
GTEx:  ENSG00000119048 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63146
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-11
    Type: Initial release
  • Version 1.1: 2012-06-27
    Changes: Database references, Derived calculations, Version format compliance