2BWE

The crystal structure of the complex between the UBA and UBL domains of Dsk2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history

Literature

Structures of the Dsk2 Ubl and Uba Domains and Their Complex.

Lowe, E.D.Hasan, N.Trempe, J.-F.Fonso, L.Noble, M.E.M.Endicott, J.A.Johnson, L.N.Brown, N.R.

(2006) Acta Crystallogr.,Sect.D 62: 177

  • DOI: 10.1107/S0907444905037777
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The yeast proteins Dsk2 and Rad23 belong to a family of proteins that contain an N-terminal ubiquitin-like domain (UBL) and a C-terminal ubiquitin-associated domain (UBA). Both Dsk2 and Rad23 function as adaptors to target ubiquitin-labelled proteins ...

    The yeast proteins Dsk2 and Rad23 belong to a family of proteins that contain an N-terminal ubiquitin-like domain (UBL) and a C-terminal ubiquitin-associated domain (UBA). Both Dsk2 and Rad23 function as adaptors to target ubiquitin-labelled proteins to the proteasome through recognition of polyubiquitin (four or more K48-linked ubiquitins) by their UBA domains and to the yeast proteasomal subunit Rpn1 by their UBL domains. The crystal structures of the Dsk2 UBL domain, the Dsk2 UBA domain and the Dsk2 UBA-UBL complex are reported. In the crystal, the Dsk2 UBA domains associate through electrostatic interactions to form ninefold helical ribbons that leave the ubiquitin-binding surface exposed. The UBA-UBL complex explains the reduced affinity of the UBA domain for UBL compared with ubiquitin and has implications for the regulation of Dsk2 adaptor function during ubiquitin-mediated proteasomal targeting. A model is discussed in which two or more Dsk2 UBA molecules may selectively bind to K48-linked polyubiquitin.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DSK2
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R
50Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: DSK2 (SHE4)
Find proteins for P48510 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P48510
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DSK2
S, T, U
77Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: DSK2 (SHE4)
Find proteins for P48510 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P48510
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.239 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 78.361α = 90.00
b = 88.854β = 106.09
c = 141.497γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-25
    Type: Initial release
  • Version 1.1: 2015-04-01
    Type: Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance
  • Version 2.0: 2019-05-15
    Type: Atomic model, Data collection, Experimental preparation, Other