8K9S

Crystal structure of plasmodium LysRS complexing with ASP3026 derived LysRS inhibitor 1 (ADKI1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Structure-guided conversion from an anaplastic lymphoma kinase inhibitor into Plasmodium lysyl-tRNA synthetase selective inhibitors.

Zhou, J.Xia, M.Huang, Z.Qiao, H.Yang, G.Qian, Y.Li, P.Zhang, Z.Gao, X.Jiang, L.Wang, J.Li, W.Fang, P.

(2024) Commun Biol 7: 742-742

  • DOI: https://doi.org/10.1038/s42003-024-06455-4
  • Primary Citation of Related Structures:  
    8K9S, 8K9U, 8K9V, 8K9W, 8K9X

  • PubMed Abstract: 

    Aminoacyl-tRNA synthetases (aaRSs) play a central role in the translation of genetic code, serving as attractive drug targets. Within this family, the lysyl-tRNA synthetase (LysRS) constitutes a promising antimalarial target. ASP3026, an anaplastic lymphoma kinase (ALK) inhibitor was recently identified as a novel Plasmodium falciparum LysRS (PfLysRS) inhibitor. Here, based on cocrystal structures and biochemical experiments, we developed a series of ASP3026 analogues to improve the selectivity and potency of LysRS inhibition. The leading compound 36 showed a dissociation constant of 15.9 nM with PfLysRS. The inhibitory efficacy on PfLysRS and parasites has been enhanced. Covalent attachment of L-lysine to compound 36 resulted in compound 36K3, which exhibited further increased inhibitory activity against PfLysRS but significantly decreased activity against ALK. However, its inhibitory activity against parasites did not improve, suggesting potential future optimization directions. This study presents a new example of derivatization of kinase inhibitors repurposed to inhibit aaRS.


  • Organizational Affiliation

    School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lysine--tRNA ligase
A, B
516Plasmodium falciparum CAMP/MalaysiaMutation(s): 0 
Gene Names: PFMC_04735
EC: 6.1.1.6
UniProt
Find proteins for A0A024X378 (Plasmodium falciparum (isolate Camp / Malaysia))
Explore A0A024X378 
Go to UniProtKB:  A0A024X378
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A024X378
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.46α = 90
b = 95.89β = 90
c = 167.5γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China21977107, 22277132, 21977108, 22277134, 21977115

Revision History  (Full details and data files)

  • Version 1.0: 2024-06-26
    Type: Initial release
  • Version 1.1: 2024-07-03
    Changes: Database references