5NES

Discovery, crystal structures and atomic force microscopy study of thioether ligated D,L-cyclic antimicrobial peptides against multidrug resistant Pseudomonas aeruginosa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.144 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Design, crystal structure and atomic force microscopy study of thioether ligated d,l-cyclic antimicrobial peptides against multidrug resistant Pseudomonas aeruginosa.

He, R.Di Bonaventura, I.Visini, R.Gan, B.H.Fu, Y.Probst, D.Luscher, A.Kohler, T.van Delden, C.Stocker, A.Hong, W.Darbre, T.Reymond, J.L.

(2017) Chem Sci 8: 7464-7475

  • DOI: https://doi.org/10.1039/c7sc01599b
  • Primary Citation of Related Structures:  
    5NES, 5NEY, 5NF0

  • PubMed Abstract: 

    Here we report a new family of cyclic antimicrobial peptides (CAMPs) targeting MDR strains of Pseudomonas aeruginosa . These CAMPs are cyclized via a xylene double thioether bridge connecting two cysteines placed at the ends of a linear amphiphilic alternating d,l-sequence composed of lysines and tryptophans. Investigations by transmission electron microscopy (TEM), dynamic light scattering and atomic force microscopy (AFM) suggest that these peptide macrocycles interact with the membrane to form lipid-peptide aggregates. Amphiphilic conformations compatible with membrane disruption are observed in high resolution X-ray crystal structures of fucosylated derivatives in complex with lectin LecB. The potential for optimization is highlighted by N -methylation of backbone amides leading to derivatives with similar antimicrobial activity but lower hemolysis.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , 3012 Bern , Switzerland . Email: jean-louis.reymond@dcb.unibe.ch.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fucose-binding lectin II (PA-IIL)A,
C [auth B],
D [auth C],
E [auth D]
114Pseudomonas aeruginosaMutation(s): 0 
Gene Names: lecBPAERUG_E15_London_28_01_14_00983PAERUG_P32_London_17_VIM_2_10_11_00423PAMH19_1713
UniProt
Find proteins for Q9HYN5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HYN5 
Go to UniProtKB:  Q9HYN5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HYN5
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CYD-TRP-TRD-LYS-LYD-LYS-LYD-LYS-TRD-TRP-CYDB [auth E]11synthetic constructMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZDC
Query on ZDC

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A],
L [auth B],
P [auth B]
3,7-anhydro-2,8-dideoxy-L-glycero-D-gluco-octonic acid
C8 H14 O6
YTZUDUWVQZSKNN-OASCRQMUSA-N
8VH
Query on 8VH

Download Ideal Coordinates CCD File 
K [auth E]1,3-dimethylbenzene
C8 H10
IVSZLXZYQVIEFR-UHFFFAOYSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
H [auth A]
M [auth B]
N [auth B]
F [auth A],
G [auth A],
H [auth A],
M [auth B],
N [auth B],
O [auth B],
Q [auth C],
R [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.144 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.201α = 84.92
b = 48.527β = 79.98
c = 52.562γ = 80.61
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-13
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations
  • Version 1.3: 2024-01-17
    Changes: Data collection, Database references, Refinement description