NMR structure of peptide 8, characterized by a trans-4-cyclohexyl-Pro, with a dramatic reduction in activity on E. coli ATCC and lost effect on P. aeruginosa.

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


The Outcomes of Decorated Prolines in the Discovery of Antimicrobial Peptides from Temporin-L.

Buommino, E.Carotenuto, A.Antignano, I.Bellavita, R.Casciaro, B.Loffredo, M.R.Merlino, F.Novellino, E.Mangoni, M.L.Nocera, F.P.Brancaccio, D.Punzi, P.Roversi, D.Ingenito, R.Bianchi, E.Grieco, P.

(2019) ChemMedChem 14: 1283-1290

  • DOI: https://doi.org/10.1002/cmdc.201900221
  • Primary Citation of Related Structures:  
    6QXB, 6QXC

  • PubMed Abstract: 

    Previously, we identified a potent antimicrobial analogue of temporin L (TL), [Pro 3 ]TL, in which glutamine at position 3 was substituted with proline. In this study, a series of analogues in which position 3 is substituted with non-natural proline derivatives, was investigated for correlations between the conformational properties of the compounds and their antibacterial, cytotoxic, and hemolytic activities. Non-natural proline analogues with substituents at position 4 of the pyrrolidine ring were considered. Structure-activity relationship (SAR) studies of these analogues were performed by means of antimicrobial and cytotoxicity assays along with circular dichroism (CD) and NMR spectroscopic analyses for selected compounds. The most promising peptides were additionally evaluated for their activity against some representative veterinary microbial strains to compare with those from human strains. We identified novel analogues with interesting properties that make them attractive lead compounds.

  • Organizational Affiliation

    Department of Pharmacy, University of Naples "Federico II", Naples, 80131, Italy.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PHE-VAL-TCP-TRP-PHE-SER-LYS-PHE-LEU-GLY-ARG-ILE-LEU-NH214Pseudis bolbodactylaMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on PH6
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-29
    Type: Initial release
  • Version 1.1: 2019-06-12
    Changes: Data collection, Database references
  • Version 1.2: 2019-07-17
    Changes: Data collection, Database references
  • Version 1.3: 2023-06-14
    Changes: Database references, Other