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Studies on Nudix hydrolase proteins and crosstalk between DNA repair pathways
Mycobacterium tuberculosis, the causative agent of tuberculosis, has become a global health concern. This calls for a dire need to understand various aspects of mycobacterial physiology in order to design better strategies ...
Structural and functional insights of biological macromolecules associated with infectious diseases – single particle cryo-electron microscopy based studies
In the global context, particularly in India, the two most important infectious diseases among many others are Tuberculosis (TB), an age-old disease and COVID-19, a new-age disease. This thesis focuses on some of the key ...
Mechanistic insights into protein stabilization and protein-protein interactions
Most amino acid substitutions in a protein either lead to partial loss of function or are near neutral. Several studies have shown the existence of second-site mutations that can rescue the defects caused by diverse loss ...
Characterization of the transsulfuration enzyme Cystathionine beta-synthase as a novel regulatory node in the sulfur metabolism of Mycobacterium tuberculosis
Methionine and cysteine metabolisms are important for the survival and pathogenesis of Mycobacterium tuberculosis (Mtb). The transsulfuration pathway converts methionine to cysteine and represents an important link between ...
Immunological consequences of host signaling-regulated epigenetic modification(s) during mycobacterial pathogenesis
Introduction: Mycobacterium tuberculosis (Mtb), the principal etiological agent of pulmonary tuberculosis (TB), continues to co-evolve with the human population making itself one of the most potent infectious killer in the ...
Manipulating Bacterial and Host Reactive Oxygen Species (ROS)- based mechanisms to potentiate killing of Mycobacterium tuberculosis (Mtb)
Mycobacterium tuberculosis (Mtb) is evolutionarily equipped to resist exogenous reactive oxygen species but shows vulnerability to an increase in endogenous ROS (eROS). Since eROS is an unavoidable consequence of aerobic ...
Biochemical and functional characterisation of cyclic AMP-binding, universal stress proteins from mycobacteria
The genus Mycobacterium harbours several pathogenic species, including M. tuberculosis, the causative agent of tuberculosis, which alone is responsible for nearly 1.3 million deaths globally every year. Understanding the ...
Influence of the substrate specificity of Mycobacterium tuberculosis ClpX on the transcriptional profile
Cellular homeostasis in bacteria is maintained by diverse molecular machines. These include several one-component systems (OCS), two- component systems (TCS), chaperone proteins, proteases, proteolytic complexes and ...
Biochemical and Functional Characterization of the Mycobacterial PdtaS-PdtaR Two Component System
Two-Component Systems (TCSs) are primarily prokaryotic modes of cell signaling involving a receptor sensor kinase (SK) that senses stimuli and a response regulator (RR) that effects a response, usually at the level of ...
Ageing associated altered host response to bacterial infection
Chapters in which I have elucidated and elaborately described how senescence alters the cellular response to infection, here I demonstrate how senescence in multiple tissues simultaneously contribute to pathogen spread and ...