5NQ5 image
Entry Detail
PDB ID:
5NQ5
Keywords:
Title:
Mtb TMK crystal structure in complex with compound 1
Biological Source:
PDB Version:
Deposition Date:
2017-04-19
Release Date:
2018-03-21
Method Details:
Experimental Method:
Resolution:
2.85 Å
R-Value Free:
0.23
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Thymidylate kinase
Chain IDs:A
Chain Length:214
Number of Molecules:1
Biological Source:Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Ligand Molecules
Primary Citation
Structure Guided Lead Generation toward Nonchiral M. tuberculosis Thymidylate Kinase Inhibitors.
J. Med. Chem. 61 2753 2775 (2018)
PMID: 29510037 DOI: 10.1021/acs.jmedchem.7b01570

Abstact

In recent years, thymidylate kinase (TMPK), an enzyme indispensable for bacterial DNA biosynthesis, has been pursued for the development of new antibacterial agents including against Mycobacterium tuberculosis, the causative agent for the widespread infectious disease tuberculosis (TB). In response to a growing need for more effective anti-TB drugs, we have built upon our previous efforts toward the exploration of novel and potent Mycobacterium tuberculosis TMPK (MtTMPK) inhibitors, and reported here the design of a novel series of non-nucleoside inhibitors of MtTMPK. The inhibitors display hitherto unexplored interactions in the active site of MtTMPK, offering new insights into structure-activity relationships. To investigate the discrepancy between enzyme inhibitory activity and the whole-cell activity, experiments with efflux pump inhibitors and efflux pump knockout mutants were performed. The minimum inhibitory concentrations of particular inhibitors increased significantly when determined for the efflux pump mmr knockout mutant, which partly explains the observed dissonance.

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Primary Citation of related structures