5KHY

Crystal structure of oxime-linked K6 diubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.331 
  • R-Value Work: 0.282 
  • R-Value Observed: 0.295 

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This is version 1.3 of the entry. See complete history


Literature

Genetically Directed Production of Recombinant, Isosteric and Nonhydrolysable Ubiquitin Conjugates.

Stanley, M.Virdee, S.

(2016) Chembiochem 17: 1472-1480

  • DOI: 10.1002/cbic.201600138
  • Primary Citation of Related Structures:  
    5KHY

  • PubMed Abstract: 
  • We describe the genetically directed incorporation of aminooxy functionality into recombinant proteins by using a mutant Methanosarcina barkeri pyrrolysyl-tRNA synthetase/tRNACUA pair. This allows the general production of nonhydrolysable ubiquitin conju ...

    We describe the genetically directed incorporation of aminooxy functionality into recombinant proteins by using a mutant Methanosarcina barkeri pyrrolysyl-tRNA synthetase/tRNACUA pair. This allows the general production of nonhydrolysable ubiquitin conjugates of recombinant origin by bioorthogonal oxime ligation. This was exemplified by the preparation of nonhydrolysable versions of diubiquitin, polymeric ubiquitin chains and ubiquitylated SUMO. The conjugates exhibited unrivalled isostery with the native isopeptide bond, as inferred from structural and biophysical characterisation. Furthermore, the conjugates functioned as nanomolar inhibitors of deubiquitylating enzymes and were recognised by linkage-specific antibodies. This technology should provide a versatile platform for the development of powerful tools for studying deubiquitylating enzymes and for elucidating the cellular roles of diverse polyubiquitin linkages.


    Organizational Affiliation

    MRC Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dundee, DD1 5EH, Scotland, UK. s.s.virdee@dundee.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polyubiquitin-B A73Homo sapiensMutation(s): 0 
Gene Names: UBB
Find proteins for P0CG47 (Homo sapiens)
Explore P0CG47 
Go to UniProtKB:  P0CG47
NIH Common Fund Data Resources
PHAROS:  P0CG47
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Polyubiquitin-B B75Homo sapiensMutation(s): 0 
Gene Names: UBB
Find proteins for P0CG47 (Homo sapiens)
Explore P0CG47 
Go to UniProtKB:  P0CG47
NIH Common Fund Data Resources
PHAROS:  P0CG47
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.331 
  • R-Value Work: 0.282 
  • R-Value Observed: 0.295 
  • Space Group: P 43 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.975α = 90
b = 103.975β = 90
c = 103.975γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_UU_12016/8

Revision History 

  • Version 1.0: 2016-09-14
    Type: Initial release
  • Version 1.1: 2017-09-13
    Changes: Advisory, Author supporting evidence
  • Version 1.2: 2018-11-21
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.3: 2019-10-16
    Changes: Data collection