4ZX3 | pdb_00004zx3

X-ray crystal structure of PfA-M1 in complex with hydroxamic acid-based inhibitor 10b


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 
    0.211 (Depositor), 0.211 (DCC) 
  • R-Value Work: 
    0.176 (Depositor), 0.178 (DCC) 
  • R-Value Observed: 
    0.178 (Depositor) 

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history

Literature

Potent dual inhibitors of Plasmodium falciparum M1 and M17 aminopeptidases through optimization of S1 pocket interactions.

Drinkwater, N.Vinh, N.B.Mistry, S.N.Bamert, R.S.Ruggeri, C.Holleran, J.P.Loganathan, S.Paiardini, A.Charman, S.A.Powell, A.K.Avery, V.M.McGowan, S.Scammells, P.J.

(2016) Eur J Med Chem 110: 43-64

  • DOI: https://doi.org/10.1016/j.ejmech.2016.01.015
  • Primary Citation Related Structures: 
    4ZW3, 4ZW5, 4ZW6, 4ZW7, 4ZW8, 4ZX3, 4ZX4, 4ZX5, 4ZX6, 4ZX8, 4ZX9, 4ZY0, 4ZY1, 4ZY2, 4ZYQ

  • PubMed Abstract: 

    Malaria remains a global health problem, and though international efforts for treatment and eradication have made some headway, the emergence of drug-resistant parasites threatens this progress. Antimalarial therapeutics acting via novel mechanisms are urgently required. Plasmodium falciparum M1 and M17 are neutral aminopeptidases which are essential for parasite growth and development. Previous work in our group has identified inhibitors capable of dual inhibition of PfA-M1 and PfA-M17, and revealed further regions within the protease S1 pockets that could be exploited in the development of ligands with improved inhibitory activity. Herein, we report the structure-based design and synthesis of novel hydroxamic acid analogues that are capable of potent inhibition of both PfA-M1 and PfA-M17. Furthermore, the developed compounds potently inhibit Pf growth in culture, including the multi-drug resistant strain Dd2. The ongoing development of dual PfA-M1/PfA-M17 inhibitors continues to be an attractive strategy for the design of novel antimalarial therapeutics.


  • Organizational Affiliation
    • Biomedicine Discovery Institute and Department of Microbiology, Melbourne, VIC 3800, Australia; Department of Biochemistry and Molecular Biology Monash University (Clayton Campus), Melbourne, VIC 3800, Australia.

Macromolecule Content 

  • Total Structure Weight: 104.36 kDa 
  • Atom Count: 8,245 
  • Modeled Residue Count: 889 
  • Deposited Residue Count: 890 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
M1 family aminopeptidase890Plasmodium falciparum FcB1/ColumbiaMutation(s): 7 
EC: 3.4.11
UniProt
Find proteins for O96935 (Plasmodium falciparum (isolate 3D7))
Explore O96935 
Go to UniProtKB:  O96935
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO96935
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
4TK

Query on 4TK



Download:Ideal Coordinates CCD File
C [auth A]N-[(1R)-1-(4-bromophenyl)-2-(hydroxyamino)-2-oxoethyl]-2,2-dimethylpropanamide
C13 H17 Br N2 O3
QSMFBPVNXFNEGF-SNVBAGLBSA-N
DMS

Query on DMS



Download:Ideal Coordinates CCD File
F [auth A],
G [auth A]
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
ZN

Query on ZN



Download:Ideal Coordinates CCD File
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG

Query on MG



Download:Ideal Coordinates CCD File
D [auth A],
E [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free:  0.211 (Depositor), 0.211 (DCC) 
  • R-Value Work:  0.176 (Depositor), 0.178 (DCC) 
  • R-Value Observed: 0.178 (Depositor) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.66α = 90
b = 109.09β = 90
c = 117.35γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Blu-Icedata collection
MOSFLMdata reduction
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)Australia1063786

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-30
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Author supporting evidence, Data collection, Database references, Derived calculations
  • Version 1.2: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description