3M3J

A new crystal form of Lys48-linked diubiquitin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 

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This is version 1.1 of the entry. See complete history. 


Literature

A new crystal form of Lys48-linked diubiquitin.

Trempe, J.F., Brown, N.R., Noble, M.E., Endicott, J.A.

(2010) Acta Crystallogr Sect F Struct Biol Cryst Commun 66: 994-998

  • DOI: 10.1107/S1744309110027600
  • Primary Citation of Related Structures:  
    3M3J

  • PubMed Abstract: 

    • Lys48-linked polyubiquitin chains are recognized by the proteasome as a tag for the degradation of the attached substrates. Here, a new crystal form of Lys48-linked diubiquitin (Ub2) was obtained and the crystal structure was refined to 1.6 A resolution. ...

    Lys48-linked polyubiquitin chains are recognized by the proteasome as a tag for the degradation of the attached substrates. Here, a new crystal form of Lys48-linked diubiquitin (Ub2) was obtained and the crystal structure was refined to 1.6 A resolution. The structure reveals an ordered isopeptide bond in a trans configuration. All three molecules in the asymmetric unit were in the same closed conformation, in which the hydrophobic patches of both the distal and the proximal moieties interact with each other. Despite the different crystallization conditions and different crystal packing, the new crystal structure of Ub2 is similar to the previously published structure of diubiquitin, but differences are observed in the conformation of the flexible isopeptide linkage.

    Organizational Affiliation: 

    Department of Biochemistry, McGill University, 3649 Promenade Sir William Osler, Montreal, Québec H3G 0B1, Canada. jean.trempe@mail.mcgill.ca



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin A, B, C, D, E, F76Bos taurusMutation(s): 0 
Gene Names: UBC
Find proteins for P0CH28 (Bos taurus)
Explore P0CH28 
Go to UniProtKB:  P0CH28
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
B, C, E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.701α = 90
b = 78.67β = 97.94
c = 93.076γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-03-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance