Division of Biological Sciences: Recent submissions
Now showing items 241-260 of 1060
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Territorial and mating strategies of males in a lekking population of blackbuck Antilope cervicapra
Territoriality associated with lek-mating systems is unique in that males defend small, heavily clustered territories that lack resources usually thought to attract females, such as food and water. Females visit these male ... -
A Phylogenetic Perspective on The Phytogeography of Western Ghats
I used a finer scale data of 156 published plots across the entire latitudinal range of WG, covering most of the protected forests. The pruned phylogeny for this study consisted of 367 species, of which ~ 50% are taxa endemic ... -
CcdB : Stability, folding and application to design novel antibacterials
The primary amino acid sequence typically dictates the ultimate conformation of the protein. Mutations in the sequence demonstrate neutral, positive or negative effects on the structure-function relationship of the protein. ... -
Investigation of RAG1 in lymphoid and brain cells: Understanding mechanism and regulation
In summary, we show that RAG1 expression is regulated through a novel miRNA (miR- 29c) mediated mechanism and establish that as an additional mode of RAG1 regulation. Studies described in the thesis reveal that among the ... -
Interactions between host cellular factors and Rotaviral viroplasmic non-structural proteins NSP5, NSP2 and their influence on virus replication
Overall, the present study demonstrates the dynamic nature of rotavirus viroplasm and how it manipulates the intracellular environment by intracellular relocalization of host proteins and their sequestration in viroplasms ... -
Pathogen-derived volatiles modulate flight or fight response in Caenorhabditis elegans
In nature, the interaction between two organisms largely relies on their ability to sense and respond to each other, which involves many specific chemicals and signaling pathways. Animals have evolved mechanisms to detect ... -
Understanding the role of arginine clusters in β-hairpin antimicrobial peptides
The work described in this thesis describes the role of arginine clusters and the importance of their position in B-hairpin antimicrobial peptides. Here, we have tried to explore the role of guanidinium groups in the ... -
Structural and Functional Investigation of a Multi-drug Efflux Transporter QacA
The emergence of multi-drug resistance in bacteria is a global health care challenge. One of the effective means of gaining antimicrobial resistance, among superbugs, is through expression of efflux pumps. Quaternary ... -
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 ... -
Kinetic, Catalytic and Epigenetic Properties of HpyAXVII DNA Methyltransferase – a Phasevarion in the Human Pathogen Helicobacter pylori
Helicobacter pylori is the leading cause of gastric cancer in human beings. It is a helix-shaped, Gram-negative, motile bacteria that colonizes the gastric mucosa and eventually the gastric epithelium. It has an overabundance ... -
Biochemical characterization of UvrD helicase and its 1 interplay with DNA mismatch repair proteins in 2 Neisseria gonorrhoeae
UvrD helicase belongs to type I superfamily of helicases. It participates in Nucleotide Excision Repair (NER) and DNA Mismatch Repair (MMR). It also participates in the rolling circle replication. It has been shown that ... -
Structural and functional studies on a small Heat Shock Protein from Entamoeba histolytica
Small Heat Shock Proteins (sHSPs) are molecular chaperones that bind to unfolding proteins during cellular stress to prevent them from aggregation. Once the normal conditions are restored, sHSPs release the bound substrate ... -
The role of Rv1860 from M. tuberculosis in modulating the host immune response
Tuberculosis continues to prevail as the major cause of mortality from any single pathogen around the world, despite implementation of control programs and the availability of effective drugs and the vaccine BCG. Mycobacterium ... -
Investigating DNA structural basis for fragility during chromosomal translocations associated with human B-cell lymphomas
Genome integrity is essential for normal cellular functions. Erroneous repair of DNA double-strand breaks (DSBs) could lead to chromosomal rearrangements, including chromosomal translocations that may result in altered ... -
Role of SIRT6 in the Regulation of Glucose Metabolism and Fatty Acid Uptake in Heart
The adult heart heavily relies on fatty acid for most of its energy supplies. The heart derives most of the fatty acid from circulation. Hence, fatty acid uptake forms a crucial step in cardiac metabolism. Studies have ... -
Soil microorganisms and biogeochemical cycles in a grazing ecosystem: interactions between producers, consumers, and decomposers
Microorganisms are the unseen majority that determines ecosystem processes, they perform biogeochemical functions that translate into essential services, and regulate global climate. In grazing ecosystems, which represent ... -
Biogeography and comparative phylogeography of freshwater snails of India
Distribution of flora and fauna is shaped by both current and historical processes. In my thesis I concentrated on how the historical component of the governing processes have dictated the current distribution of biota. ... -
Design of soluble and particulate immunogens derived from the stem of Influenza hemagglutinin
Influenza is a highly contagious virus, belonging to the family Orthomyxoviridae that causes acute febrile respiratory illness which can be fatal in some cases. The highest risk groups for influenza viral infection ... -
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 ... -
Use of sub-family specific residues of protein modules in recognizing sites of functional and structural specialization
Functional and regulatory features of a protein in a living system are determined by several factors such as chemical nature and three-dimensional arrangement of residues in the functional site, spatial and temporal ...