1E0Q

Mutant Peptide from the first N-terminal 17 amino-acid of Ubiquitin


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 27 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Characterization of a Mutant Peptide Derived from Ubiquitin: Implications for Protein Folding.

Zerella, R.Chen, P.Y.Evans, P.A.Raine, A.Williams, D.H.

(2000) Protein Sci 9: 2142

  • DOI: 10.1110/ps.9.11.2142
  • Primary Citation of Related Structures:  
    1E0Q

  • PubMed Abstract: 
  • The formation of the N-terminal beta-hairpin of ubiquitin is thought to be an early event in the folding of this small protein. Previously, we have shown that a peptide corresponding to residues 1-17 of ubiquitin folds autonomously and is likely to have a native-like hairpin register ...

    The formation of the N-terminal beta-hairpin of ubiquitin is thought to be an early event in the folding of this small protein. Previously, we have shown that a peptide corresponding to residues 1-17 of ubiquitin folds autonomously and is likely to have a native-like hairpin register. To investigate the causes of the stability of this fold, we have made mutations in the amino acids at the apex of the turn. We find that in a peptide where Thr9 is replaced by Asp, U(1-17)T9D, the native conformation is stabilized with respect to the wild-type sequence, so much so that we are able to characterize the structure of the mutant peptide fully by NMR spectroscopy. The data indicate that U(1-17)T9D peptide does indeed form a hairpin with a native-like register and a type I turn with a G1 beta-bulge, as in the full-length protein. The reason for the greater stability of the U(1-17)T9D mutant remains uncertain, but there are nuclear Overhauser effects between the side chains of Asp9 and Lys 11, which may indicate that a charge-charge interaction between these residues is responsible.


    Organizational Affiliation

    Cambridge Centre for Molecular Recognition and University Chemical Laboratory, United Kingdom.



Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
POLYUBIQUITIN-BA17Bos taurusMutation(s): 1 
Gene Names: UBB
Membrane Entity: Yes 
UniProt
Find proteins for P0CG53 (Bos taurus)
Explore P0CG53 
Go to UniProtKB:  P0CG53
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0CG53
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 27 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-01-16
    Type: Initial release
  • Version 1.1: 2012-11-07
    Changes: Database references, Derived calculations, Other, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2013-05-15
    Changes: Atomic model, Database references, Derived calculations, Other, Structure summary