Browsing Division of Biological Sciences by thesis submitted date"2021"
Now showing items 21-40 of 48
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Optical and behavioural tools to investigate the neural correlates of learning and memory
Events in our everyday life are encoded as memories that can be consciously recollected and remembered, although our ability to retrieve the specific details associated with these events diminish with time. Such losses ... -
Parietal and prefrontal control of distinct components of attention
In this thesis, we investigate behavioural mechanisms and neural substrates of distinct components of endogenous spatial attention. Endogenous attention facilitates neural processing of the selected stimulus through one ... -
Probing Protein Sequence-Function Relationships using Deep Mutational Scanning
Deep Mutational Scanning (DMS) approaches help elucidate sequence-function-phenotype relationships in proteins, which ultimately improves our understanding of residue (or nucleotide)-specific contributions to protein ... -
Protein-small molecule interactions: Structural insights and applications in computational drug discovery
Deviation from normal healthy conditions, termed as disease, can often be triggered due to the malfunctioning of proteins. Modulating the functions of proteins by administering therapeutic agents (drugs) may alleviate the ... -
Regulation of carbon metabolism in Pichia pastoris by Mxr1p and identification of novel regulators
Pichia pastoris (a.k.a. Komagataella phaffii), a widely used yeast for recombinant protein production, is cultured under a variety of conditions ranging from shake flasks to large bioreactors employing minimal, chemically ... -
Regulation of Flagellar Motility in Giardia lamblia and Trichomonas vaginalis
Protozoan pathogens are responsible for infections that are highly prevalent, especially in developing and under-developed countries. Flagellar motility is exhibited by a variety of organisms ranging from bacteria to certain ... -
Role of calcium sensors in differential alignment of synaptic nanomachinery during neurotransmission
Some of the brain's most remarkable feats such as learning and memory, are thought to emerge from elementary properties of chemical synapses. The distinctive feature of these synapses is that the action potential in the ... -
Role of Escherichia coli UvrD helicase in resolving G-quadruplex DNA structures
G-quadruplex (G4) secondary structures have been implicated in various biological processes, including gene expression, DNA replication and telomere maintenance. However, unresolved G4 structures impede replication ... -
Role of Hydrogen Sulfide Gas in Modulating HIV-1 Latency and Reactivation
Human Immunodeficiency Virus 1 (HIV-1) remains a global public health threat, claiming 690 thousand people’s lives in 2020 and causing 1.5 million new infections. The advent of combinatorial antiretroviral therapy (ART) ... -
Role of Lysyl oxidase in TGF-beta-induced Fibroblast Activation and Cancer-Associated Fibroblast-mediated Breast Cancer Progression
Cancer-associated Fibroblasts (CAFs) are a dominant cell type of the breast cancer microenvironment and are proposed to be involved in metastatic progression. TGF-β has been reported to influence fibroblast to myofibroblast ... -
Role of Mycobacterium tuberculosis UvrD1 and UvrD2 helicases in resolving G-quadruplex DNA structures
Unresolved G-quadruplex (G4) DNA secondary structures impede DNA replication and can lead to DNA breaks and to genome instability. Helicases are known to unwind G4 structures and thereby facilitate genome duplication. ... -
Roles of Drosophila Beadex and CG9650 in the development and functioning of the larval neuromuscular junctions
In eukaryotes, all voluntary and involuntary actions like, cognition, learning & memory, voluntary movements, feeding, etc., are coordinated by the employment of neuronal circuitry that transmits the signal from the ... -
Roles of Protein Acetylation in the Human Pathogen Helicobacter pylori
Helicobacter pylori is a gram-negative epsilon proteobacterium infecting half of the world population. H. pylori is a naturally competent bacterium with a huge repertoire of Restriction-Modification (RM) systems. The ... -
Roles of the ribosomal protein uS12 and the initiation factor 3 in the maintenance of fidelity of translation in Escherichia coli
The flow of genetic information within biological systems according to the central dogma of molecular biology entails protein synthesis as the last step towards deciphering the message encrypted in the genetic code in ... -
Structural and Biophysical studies to evaluate the influence of oligomerization on biomolecular function
Oligomeric proteins are more common than monomers. This aspect of molecular evolution substantially contributes to functional diversity and the acquisition of features such as cooperativity and regulatory mechanisms. Not ... -
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 ... -
Structural Correlates of Related Contextual Learning in Retrosplenial Cortex
The discovery of dendritic spines by Santiago Ramón y Cajal is one of the most important chapters in the history of neuroscience. Apart from establishing the neuron doctrine, it presented dendritic spines as the information ... -
Structural insights into assembly and regulation of HigBA toxin-antitoxin system from Escherichia coli
In the last few decades, bacterial Toxin-antitoxin (TA) systems have been identified to play crucial roles in bacterial survival under stressful conditions and virulence. TA systems are pair of genetic elements where one ... -
Structural, mechanistic and pharmacological studies of inhibitory neurotransmitter transporters
Gamma-aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the central nervous system (CNS). The synaptic levels of GABA are controlled by the activity of GABA transporters (GATs) present in the presynaptic ... -
Studies on exosomal microRNAs and proteins associated with Hepatitis C and Dengue virus induced pathogenesis
Studies on the exosomal microRNAs and proteins associated with Hepatitis C and Dengue virus-induced pathogenesis. Hepatitis C virus and Dengue virus are the group of positive-strand RNA viruses belonging to the family ...