6U7Q

NMR solution structure of SFTI-R10


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Application and Structural Analysis of Triazole-Bridged Disulfide Mimetics in Cyclic Peptides.

White, A.M.de Veer, S.J.Wu, G.Harvey, P.J.Yap, K.King, G.J.Swedberg, J.E.Wang, C.K.Law, R.H.P.Durek, T.Craik, D.J.

(2020) Angew Chem Int Ed Engl 59: 11273-11277

  • DOI: https://doi.org/10.1002/anie.202003435
  • Primary Citation of Related Structures:  
    6Q1U, 6U22, 6U24, 6U7Q, 6U7R, 6U7S, 6U7U, 6U7W, 6U7X, 6VXY, 6VY8

  • PubMed Abstract: 

    Ruthenium-catalysed azide-alkyne cycloaddition (RuAAC) provides access to 1,5-disubstituted 1,2,3-triazole motifs in peptide engineering applications. However, investigation of this motif as a disulfide mimetic in cyclic peptides has been limited, and the structural consequences remain to be studied. We report synthetic strategies to install various triazole linkages into cyclic peptides through backbone cyclisation and RuAAC cross-linking reactions. These linkages were evaluated in four serine protease inhibitors based on sunflower trypsin inhibitor-1. NMR and X-ray crystallography revealed exceptional consensus of bridging distance and backbone conformations (RMSD<0.5 Å) of the triazole linkages compared to the parent disulfide molecules. The triazole-bridged peptides also displayed superior half-lives in liver S9 stability assays compared to disulfide-bridged peptides. This work establishes a foundation for the application of 1,5-disubstituted 1,2,3-triazoles as disulfide mimetics.


  • Organizational Affiliation

    ARC Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GLY-ARG-CYS-THR-LYS-SER-ILE-PRO-PRO-ARG-CYS-PHE-PRO-ASP inhibitor14Helianthus annuusMutation(s): 1 
UniProt
Find proteins for Q4GWU5 (Helianthus annuus)
Explore Q4GWU5 
Go to UniProtKB:  Q4GWU5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4GWU5
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Australian Research Council (ARC)AustraliaDP150100443

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-22
    Type: Initial release
  • Version 1.1: 2020-07-15
    Changes: Database references
  • Version 1.2: 2023-06-14
    Changes: Database references, Other