5I8X

Bicyclic antimibrocial peptides


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 2.3 of the entry. See complete history


Literature

Chemical space guided discovery of antimicrobial bridged bicyclic peptides against Pseudomonas aeruginosa and its biofilms.

Di Bonaventura, I.Jin, X.Visini, R.Probst, D.Javor, S.Gan, B.H.Michaud, G.Natalello, A.Doglia, S.M.Kohler, T.van Delden, C.Stocker, A.Darbre, T.Reymond, J.L.

(2017) Chem Sci 8: 6784-6798

  • DOI: https://doi.org/10.1039/c7sc01314k
  • Primary Citation of Related Structures:  
    5I8M, 5I8X, 5NGQ

  • PubMed Abstract: 

    Herein we report the discovery of antimicrobial bridged bicyclic peptides (AMBPs) active against Pseudomonas aeruginosa , a highly problematic Gram negative bacterium in the hospital environment. Two of these AMBPs show strong biofilm inhibition and dispersal activity and enhance the activity of polymyxin, currently a last resort antibiotic against which resistance is emerging. To discover our AMBPs we used the concept of chemical space, which is well known in the area of small molecule drug discovery, to define a small number of test compounds for synthesis and experimental evaluation. Our chemical space was calculated using 2DP, a new topological shape and pharmacophore fingerprint for peptides. This method provides a general strategy to search for bioactive peptides with unusual topologies and expand the structural diversity of peptide-based drugs.


  • 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
A, B, C, D
114Pseudomonas aeruginosaMutation(s): 0 
Gene Names: 
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
DLS-LYS-CYS-LYS-LEU-CYS-LYS-LYS-NH29synthetic constructMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZDC
Query on ZDC

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

Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth A]
K [auth B]
L [auth B]
G [auth A],
H [auth A],
I [auth A],
K [auth B],
L [auth B],
M [auth B],
O [auth C],
P [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
DLS
Query on DLS
E
L-PEPTIDE LINKINGC10 H18 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.424α = 90
b = 79.202β = 94.52
c = 52.627γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland--

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-23
    Type: Initial release
  • Version 2.0: 2017-09-13
    Changes: Advisory, Atomic model, Author supporting evidence, Derived calculations
  • Version 2.1: 2017-11-29
    Changes: Database references
  • Version 2.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations
  • Version 2.3: 2024-01-10
    Changes: Data collection, Database references, Refinement description