Division of Biological Sciences: Recent submissions
Now showing items 421-440 of 1085
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Physiological Role of Arr, an ADP-ribosyltransferase in Mycobacterium smegmatis
The studies reported in this thesis address the physiological role of an antibiotic resistance gene arr, followed by establishment of the arr knockout strains (generated during the investigation) for drug testing and ... -
Regulation of Host Innate Immune Responses by Hippo Signaling Pathway during Pattern Recognition Receptors (PRRs) Driven Inflammation : Implication for Host-Pathogen Interactions
Innate immunity refers to the first line of defence system of the host that comes into play immediately or within hours of appearance of invading pathogens like bacteria, viruses and fungi. Cells of the innate immune system ... -
Regulation of Notch signalling by hypoxia and AMPK in breast cancer
Developmental pathways such as Notch are known to regulate self-renewal and cell fate decisions in embryonic and adult tissue-specific stem cells, while deregulation of Notch signalling is associated with malignant ... -
Computational Mechanisms Underlying the Voluntary Control of Reach Movement Planning and Execution
In everyday life we make a variety of reaching movements. Most of these reaching movements have a clear objective of bringing the hand to the spatial location of the object of interest. Although we typically do not explicitly ... -
Wnt/β-Catenin-dependent Epigenetic Factors Shape Host Immune Responses During Mycobacterial Infection
The genus mycobacterium has more than 120 species of bacteria; one being M. tuberculosis (Mtb), the etiological agent of tuberculosis (TB). During infection, the host mounts a heightened immune response to contain the ... -
Structural Studies on Non-toxic Homologues of type II Ribosome Inactivating Proteins (RIPs)
This thesis is concerned with structural and related studies on two non-toxic homologues of type II RIPs. Type II RIPs, which are more toxic than type I, contain an additional lectin chain (B-chain) covalently linked to ... -
Maternal Immune Activation Perturbs Gene Expression in the Embryonic Brain Leading to Autism Spectrum Disorders
Autism Spectrum Disorders (ASD) constitutes a spectrum of developmental disorders that share common phenotypes of social and communication deficits and repetitive behaviours. ASDs have many possible underlying causes ... -
Systematics and Diversification in the Indian Radiation of Hemidactylus Geckos
Understanding the patterns and processes generating biodiversity is fundamental to ecology and evolutionary biology, and studying diversification can give us key insights into this process. In my thesis, I investigate ... -
Understanding the Role of ThiJ/DJ-1/PfpI Family Member Proteins in Regulating Redox Homeostasis, Mitochondrial Health and Lifespan in Saccharomyces cerevisiae
In a healthy cell, the ROS levels are stringently regulated by the action of various enzymatic or non-enzymatic antioxidant systems. Imbalance in the ROS homeostasis generates oxidative stress resulting in damage to cellular ... -
Regulation of Expression of p53 and its Isoform Δ40p53 : Consequences on Cellular Gene Expression
The TP53 tumour suppressor gene encodes for p53 protein which is the frequently altered gene in most of the cancers. p53 protein is activated in response to different stresses and plays major role in maintaining genome ... -
Structural and Functional Characterisation of Small Heat Shock Protiens from Mycobacterium Marinum M
Small Heat Shock Proteins (sHSP) are ATP-independent molecular chaperones that exhibit diversity in structure, function and mode of action. They are present ubiquitously in all kingdoms of life. They function mainly by ... -
Pranlukast as an Allosteric Inhibitor of M.Tuberculosis Ornithine Acetyltransferase : Implication Towards Novel Combinatorial Therapy
Tuberculosis (TB) is a deadly disease responsible for the death of approximately 1.5 million people each year, with the highest being from developing nations. Tuberculosis affects mostly the lungs, and other parts of the ... -
Biophysical Studies on Mycobacterium Tuberculosis σ Factor – Regulatory Protein Complexes
Adaptation to external environmental conditions is essential for the survival of a bacterial cell. Bacteria have thus evolved multiple mechanisms to sense environmental stimuli and to couple this information into an ... -
Effects of Cyclic Permutation, Glycan Removal and Aspartate Mutagenesis on Conformation of HIV-1 Envelope
It has been decades since Human Immunodeficiency Virus-1 (HIV-1) was discovered. The virus has created havoc worldwide. According to the UNAIDS 2014 Gap report, 35million people worldwide are infected with HIV-1 and yet ... -
Cellular and Molecular Features of the Response of Mycobacterium smegmatis to Rifampicin and Moxifloxacin Upon Prolonged Exposure
Bacterial persisters are a subpopulation of bacteria that can tolerate lethal concentrations of antibiotics. These are phenotypic variants that can give rise to drug‐susceptible population upon withdrawal of the antibiotic. ... -
Rotavirus Viroplasm Structure (VS) : The First Insights into the Architectural Assembly of the Viral and Host Factors in the VS"
Rotavirus is a major cause of acute gastroenteritis in infants and young children and responsible for approximately 453,000 infantile deaths per year. Rotaviruses are non-enveloped RNA viruses belonging to the Reoviridae ... -
Deciphering the Role of METTL3-Dependent m6A-epitranscriptome in Glioma Stem-like Cells
The major roadblocks in treatment for GBM are resistance to therapy and recurrence of GBM cells. Regardless of various treatment strategies, the average survival of GBM patients is poor and incidence of recurrence remains ... -
G-Protein Coupled Estrogen Receptor (hGPER)- Mediated Action of 17β-Estradiol on hTREK-1 Potassium Channel
TREK-1 is a two-pore domain potassium channel that contributes to maintenance of the resting membrane potential of a cell. TREK-1 is involved in several physiological and pathophysiological conditions like nociception, ... -
Targeting RAD51C Pathological Mutants by Synthetic Lethality and Extended Functions of RAD51C/XRCC3 in Mitochondrial Genome Maintenance
To counteract the potentially calamitous effects of genomic instability in the form of double-strand breaks (DSBs), cells have evolved with two major mechanisms. First, DNA non¬homologous end joining (NHEJ) which requires ... -
Structure and Dynamics of a Tropical Dry Forest Plant Community
This thesis is spurred by the overarching question “why is a plant where it is in space and time?”, which, when asked in different global communities over the last century or so, has contributed to the development of general ...