2G3Q

Solution Structure of Ede1 UBA-ubiquitin complex

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 80 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformers are the 20 structures with the lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 

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This is version 1.2 of the entry. See complete history. 

Literature

Structural Basis for Monoubiquitin Recognition by the Ede1 UBA Domain.

Swanson, K.A., Hicke, L., Radhakrishnan, I.

(2006) J.Mol.Biol. 358: 713-724

  • DOI: 10.1016/j.jmb.2006.02.059

  • PubMed Abstract: 

    • Monoubiquitination is a general mechanism for downregulating the activity of cell surface receptors by consigning these proteins for lysosome-mediated degradation through the endocytic pathway. The yeast Ede1 protein functions at the internalization ...

    Monoubiquitination is a general mechanism for downregulating the activity of cell surface receptors by consigning these proteins for lysosome-mediated degradation through the endocytic pathway. The yeast Ede1 protein functions at the internalization step of endocytosis and binds monoubiquitinated proteins through a ubiquitin associated (UBA) domain. UBA domains are found in a broad range of cellular proteins but previous studies have suggested that the mode of ubiquitin recognition might not be universally conserved. Here we present the solution structure of the Ede1 UBA domain in complex with monoubiquitin. The Ede1 UBA domain forms a three-helix bundle structure and binds ubiquitin through a largely hydrophobic surface in a manner reminiscent of the Dsk2 UBA and the remotely homologous Cue2 CUE domains, for which high-resolution structures have been described. However, the interaction is dissimilar to the molecular models proposed for the hHR23A UBA domains bound to either monoubiquitin or Lys48-linked diubiquitin. Our mutational analyses of the Ede1 UBA domain-ubiquitin interaction reveal several key affinity determinants and, unexpectedly, a negative affinity determinant in the wild-type Ede1 protein, implying that high-affinity interactions may not be the sole criterion for optimal function of monoubiquitin-binding endocytic proteins.

    Organizational Affiliation: 

    Department of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, 2205 Tech Drive, 2-100 Hogan Bldg, Evanston, IL 60208-3500, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein YBL047C
A
43Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: EDE1 (BUD15)
Find proteins for P34216 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P34216
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin
B
76Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: UBI4 (SCD2)
Find proteins for P0CG63 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P0CG63
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 80 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformers are the 20 structures with the lowest restraint energies, restraint violations, and RMS deviations from ideal covalent geometry 
  • Olderado: 2G3Q Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-09
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance