ISDA

Deposition Date 2013-09-12

Release Date 2013-11-20

Last Version Date 2024-02-28

Entry Detail

PDB ID:

4MOT

Keywords:

ISOMERASE/ISOMERASE INHIBITOR

Title:

Structure of Streptococcus pneumonia pare in complex with AZ13072886

Biological Source:

Source Organism:

Streptococcus pneumoniae (Taxon ID: 171101)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.75 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.19

Space Group:

C 2 2 21

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Topoisomerase IV subunit B
Gene (Uniprot):parE
Chain IDs:A
Chain Length:226
Number of Molecules:1
Biological Source:Streptococcus pneumoniae

UniProt ID:Q8DQB5 Pfam ID:PF02518

Ligand Molecules

2B7

Primary Citation

Thiazolopyridone ureas as DNA gyrase B inhibitors: Optimization of antitubercular activity and efficacy.

Kale, R.R, Kale, M.G, Waterson, D, Raichurkar, A, Hameed, S.P, Manjunatha, M.R, Kishore Reddy, B.K, Malolanarasimhan, K, Shinde, V, Koushik, K, Jena, L.K, Menasinakai, S, Humnabadkar, V, Madhavapeddi, P, Basavarajappa, H, Sharma, S, Nandishaiah, R, Mahesh Kumar, K.N, Ganguly, S, Ahuja, V, Gaonkar, S, Naveen Kumar, C.N, Ogg, D, Boriack-Sjodin, P.A, Sambandamurthy, V.K, de Sousa, S.M, Ghorpade, S.R.Show

Bioorg.Med.Chem.Lett. 24 870 879 (2014)

PMID: 24405701 DOI: 10.1016/j.bmcl.2013.12.080

Abstact

Scaffold hopping from the thiazolopyridine ureas led to thiazolopyridone ureas with potent antitubercular activity acting through inhibition of DNA GyrB ATPase activity. Structural diversity was introduced, by extension of substituents from the thiazolopyridone N-4 position, to access hydrophobic interactions in the ribose pocket of the ATP binding region of GyrB. Further optimization of hydrogen bond interactions with arginines in site-2 of GyrB active site pocket led to potent inhibition of the enzyme (IC50 2 nM) along with potent cellular activity (MIC=0.1 μM) against Mycobacterium tuberculosis (Mtb). Efficacy was demonstrated in an acute mouse model of tuberculosis on oral administration.

Legend

Protein

Chemical

Disease

Primary Citation of related structures