Exploring the Potential Inhibition of Candidate Drug Molecules for Clinical Investigation Based on their Docking or Crystallographic Analyses against

Tuberculosis (TB) is a devastating disease responsible for millions of humans' deaths worldwide. It is caused by a mycobacterial organism, the tubercle bacillus or Mycobacterium tuberculosis. Although TB can be treated, cured and can be prevented if patients take prescribed medicines, scientists have never come close to wiping it out due to a sharp rise in the incidence of multidrug-resistant (MDR) and extensively drug-resistant (XDR) mycobacterium strains. Due to long regimen treatment and emergence of MDR and XDR-TB, it is urgent to re-engineer and reposition old drugs for developing new antimycobacterial entities with novel mechanisms of action to achieve effective TB control even against the resistant forms of TB. To combat the dreadful MDR and XDR-TB, potential targets are being extensively searched for the last couple of years for the design and discovery of active potential antitubercular chemotherapeutics. To explore the disease virulence, potential new tubercular target enzymes such as InhA, MmpL3, ATP synthase, DprE1, QcrB and MenA have been taken into consideration in the present study and the structure-based design of the corresponding target inhibitors which are under clinical investigation has been attempted to identify structural features for the discovery of new chemical entities (NCEs) having specificity towards MDR and XDR Mycobacterium tuberculosis (M. tuberculosis).

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