Browsing Division of Biological Sciences by Subject "Research Subject Categories::NATURAL SCIENCES::Biology::Cell and molecular biology"
Now showing items 1-20 of 122
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Achieving oral bioavailability of therapeutic macrocyclic peptides by bridging backbone chemistry with pharmacokinetics
Full text embargo up to Dec 11, 2026 Macrocyclic peptides are emerging as very potential candidates for drug development. Due to the advancement in display technologies, macrocycles can target undruggable proteins. These ... -
Activin and TGF-β signaling: Differential role of a Serine/Threonine phosphate in the regulation of SMAD2 activity
Activins are the most prominent members of the Activin/Inhibin branch of the TGF-β superfamily. Similar to TGF-β, they play an essential role in regulating multiple physiological processes such as development, reproductive ... -
Altering DNA topology in mycobacteria: impact of perturbation of DNA gyrase on physiology and gene expression
In the current dissertation, efforts have been made to probe the in vivo role of DNA gyrase to determine its importance in the growth, physiology and gene expression in mycobacteria. In this dissertation, the role of DNA ... -
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 ... -
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 ... -
Biochemical and structural studies to provide insights into initiator tRNA delivery by eIF2A in noncanonical translation initiation
Eukaryotic initiation factor 2A (eIF2A), a non-canonical translation initiation factor, delivers initiator tRNA (tRNAi) onto the 40S ribosomal subunit in a codon-dependent and GTP-independent manner, unlike the canonical ... -
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 ... -
Characterization of XRN2-mediated microRNA turnover mechanism and its pathophysiological significance in eukaryotes
MicroRNAs (miRNAs) are endogenous, small non-coding RNAs that are extensively involved in the posttranscriptional regulation of gene expression in eukaryotes. Comprehensive studies on miRNA expression and function have ... -
Characterizing the link between dynamics and function in proteins that violate the structure-function paradigm
The structure-function paradigm states that the three-dimensional structure of a protein is dictated by its amino acid sequence, which influences its function. However, this paradigm fails to explain the behaviour of ... -
Characterizing the viral factors and host determinants that control Dengue virus infection and pathogenesis
Background – Dengue virus is a mosquito-borne flavivirus that is the causative agent for dengue fever, which progresses to dengue shock syndrome in many patients. It is estimated that around 390 million dengue infections ... -
Conformational and Dynamic Motifs in the Biomolecular Recognition of Glycan and Acetyl Functionalities
Biomolecular recognition is a fundamental principle underlying all cellular processes, driven by specific and tightly regulated interactions. This thesis explores the structural basis of recognition mechanisms in two ... -
Conformational Heterogeneity, Solution Structure and Autoregulatory Roles of the MazE9 Antitoxin from Mycobacterium tuberculosis
The work presented in this thesis endeavors to decode the details of the dynamics of MazE9 antitoxin of the Mycobacterium tuberculosis MazEF9 toxin-antitoxin system and the transcriptional autoregulation effected by it. ... -
Cyclic nucleotide-binding proteins in mycobacteria
Mycobacterium tuberculosis, one of the leading causes of death worldwide even today, employs the second messenger cAMP extensively for its pathogenicity and persistence. Intracellular and extracellular levels of cAMP in ... -
Deciphering canonical and non-canonical role of splicing factor Prp16 in pathogenic yeast C. neoformans
RNA splicing is a ubiquitous process during eukaryotic gene expression, where non-coding introns are removed from primary transcripts to form functional mRNA. This vital process is carried out by the spliceosome, a large ... -
Deciphering the evolutionary significance of maintaining cryptic genetic systems by bacteria
Cryptic genes are phenotypically silent DNA sequences with the potential to code for a function, but remain inactive during the normal life span of the organism. However they can be activated by a single mutational event ... -
Deciphering the function of sesaminol as an anti-obesity and anti-MAFLD molecule
Obesity and its associated metabolic diseases, including type 2 diabetes and non-alcoholic fatty liver disease (NAFLD) or metabolic dysfunction-associated liver disease (MAFLD), pose significant global health challenges. ... -
Deciphering the mechanism behind the division of the Salmonella containing vacuole (SCV) and the immunomodulation strategy employed by Salmonella Typhimurium
The genus Salmonella represents flagellated, Gram-negative, rod-shaped anaerobic bacteria which is a leading cause of food-borne illness and causes enteric disease in a wide range of animals. In humans and several warm-blooded ... -
Deciphering the role of outer membrane porins in the pathogenesis of Salmonella enterica serovar Typhimurium
Porins are highly conserved barrel-shaped proteins bound to the bacterial outer membrane and involved in the selective transport of charged molecules across the membrane. They consist of parallel and anti-parallel β sheets ... -
Deciphering the role of spermidine in Salmonella Typhimurium pathogenesis
Salmonella enterica serovar Typhimurium (S. Typhimurium) is a Gram-negative, facultative anaerobic bacterium. It infects a broad range of hosts, causing symptoms such as gastroenteritis, abdominal pain, inflammatory diarrhoea ... -
Decoding determinants of selectivity in biomolecules
Molecular events demonstrate remarkable specificity amid complexity in its cellular environment. This phenomenon, termed biomolecular recognition, is fundamental to the organization and regulation of biological systems. ...