7B4R

Structure of the 4'-phosphopantetheinyl transferase PptAb from Mycobacterium abscessus in complex with Coenzyme A and N-(2,6-diethylphenyl)-N'-(N-ethylcarbamimidoyl)urea


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 

Starting Model: experimental
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Literature

Phosphopantetheinyl transferase binding and inhibition by amidino-urea and hydroxypyrimidinethione compounds.

Carivenc, C.Maveyraud, L.Blanger, C.Ballereau, S.Roy-Camille, C.Nguyen, M.C.Genisson, Y.Guilhot, C.Chalut, C.Pedelacq, J.D.Mourey, L.

(2021) Sci Rep 11: 18042-18042

  • DOI: https://doi.org/10.1038/s41598-021-97197-4
  • Primary Citation of Related Structures:  
    7B4R, 7B4S, 7BCZ, 7BDW

  • PubMed Abstract: 

    Owing to their role in activating enzymes essential for bacterial viability and pathogenicity, phosphopantetheinyl transferases represent novel and attractive drug targets. In this work, we examined the inhibitory effect of the aminido-urea 8918 compound against the phosphopantetheinyl transferases PptAb from Mycobacterium abscessus and PcpS from Pseudomonas aeruginosa, two pathogenic bacteria associated with cystic fibrosis and bronchiectasis, respectively. Compound 8918 exhibits inhibitory activity against PptAb but displays no activity against PcpS in vitro, while no antimicrobial activity against Mycobacterium abscessus or Pseudomonas aeruginosa could be detected. X-ray crystallographic analysis of 8918 bound to PptAb-CoA alone and in complex with an acyl carrier protein domain in addition to the crystal structure of PcpS in complex with CoA revealed the structural basis for the inhibition mechanism of PptAb by 8918 and its ineffectiveness against PcpS. Finally, in crystallo screening of potent inhibitors from the National Cancer Institute library identified a hydroxypyrimidinethione derivative that binds PptAb. Both compounds could serve as scaffolds for the future development of phosphopantetheinyl transferases inhibitors.


  • Organizational Affiliation

    Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, 31077, Toulouse, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Possible 4'-phosphopantetheinyl transferase232Mycobacteroides abscessus ATCC 19977Mutation(s): 0 
Gene Names: MAB_3117c
UniProt
Find proteins for B1MD73 (Mycobacteroides abscessus (strain ATCC 19977 / DSM 44196 / CCUG 20993 / CIP 104536 / JCM 13569 / NCTC 13031 / TMC 1543 / L948))
Explore B1MD73 
Go to UniProtKB:  B1MD73
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB1MD73
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.962α = 90
b = 83.049β = 90
c = 56.023γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
PHENIXrefinement
XSCALEdata reduction
XSCALEdata scaling
XDSdata processing
Cootmodel building
DIMPLEphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Agence Nationale de la Recherche (ANR)FranceANR 16 CE18 0011 01

Revision History  (Full details and data files)

  • Version 1.0: 2021-11-10
    Type: Initial release
  • Version 1.1: 2024-01-31
    Changes: Data collection, Refinement description