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

  • 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 h ...

    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  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
POLYUBIQUITIN-B
A
17Bos taurusMutation(s): 1 
Gene Names: UBB
Find proteins for P0CG53 (Bos taurus)
Go to Gene View: UBB
Go to UniProtKB:  P0CG53
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 27 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • Olderado: 1E0Q Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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