Browsing Division of Biological Sciences by thesis submitted date"2007"
Now showing items 21-38 of 38
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The Prediction Of Field Cricket Phonotaxis In Complex Acoustic Environments
(2010-09-24)Animals detect, recognize and localize relevant objects in noisy, multi-source environments. Female crickets locate potential mates in choruses of simultaneously calling males using acoustic signals, a behaviour termed ... -
Queens And Their Succerssors : The Story Of Power In The Primitively Eusocial Wasp Ropalidia Marginata
(2009-04-30)Ropalidia marginata is characterized as a primitively eusocial wasp due to the absence of morphological differentiation between the queen and worker castes. Unlike other primitively eusocial wasps, however, the queen in ... -
Regulation Of Interferon Regulatory Factor-2 mRNA Translation By 'IRES' Element : Possible Role Of trans Acting Factors
(2009-09-03)Cellular response to various stress conditions involves regulation of gene expression by different mechanisms. Translation is the final step in the flow of genetic information and regulation at this level allows an early ... -
Role Of Idiotypic Anti-Idiotypic Network In The Sustenance Of Immunological Memory
(2009-05-25)Living amidst a milieu of pathogenic organisms, vertebrates are in constant threat of contracting one or the other disease. As a mechanism of protection against such ‘invasions’, the vertebrate immune system has evolved ... -
Sensory Ecology Of Acoustic Communication In The Tropical Bushcricket Genus Mecopoda : Mechanisms And Evolution Of Synchrony
(2009-07-10)In this thesis, I characterise five species of the bushcricket genus Mecopoda with respect to their acoustic signals and morphology and investigate the phenomenon of acoustic synchrony in one of these five species: Mecopoda ... -
Spatial Variation In Interactions Of The Semi-Myrmecophyte Humboldtia Brunonis (Fabaceae) With Ants And Other Invertebrates
(2010-06-01)Despite a long history of investigations on protective ant-plant interactions, since the late 19century (Thomas Belt 1874), a comprehensive quantitative understanding of the adaptations that facilitate these associations ... -
Structural Studies On Basic Winged Bean Agglutinin
(2009-07-03)The journey of structural studies on lectins, starting with ConA in the 70s, has crossed many milestones. Lectins, multivalent carbohydrate-binding proteins of non-immune origin, specifically bind diverse sugar structures. ... -
Structural Studies On Mycobacterium Smegmatis Dps Molecules
(2010-02-22)Oxidative stress is a universal phenomenon experienced by both aerobic and anaerobic organisms. Reactive oxygen species (ROS) are generated during the stress, which can damage most cellular components including proteins, ... -
Structural Studies on Sesbania Mosaic Virus Protease Domain and Plasmodium Falciparum Hypoxanthine Quanine Phosphoribosyl Transferase and Triosephosphate Isomerase
X-ray crystallography is a powerful tool to obtain atomic resolution details on the three-dimensional structure of biological macromolecules. Crystallographic techniques find wide applications in understanding macromolecular ... -
Structural Studies On Three Pyridoxal-5'-Phosphate Dependent Enzymes : N-Acetylornithine Aminotransferase, Serine Hydroxymethyltransferase And Diaminopropionate Ammonia Lyase
(2009-09-02)Pyridoxal 5’-phosphate (PLP), the active form of vitamin B6, is a cofactor for many enzymes involved in the metabolism of amino acids, amino acid derived metabolites and some amino sugars. PLP is one of the most versatile ... -
Studies On DNA Gyrase From Mycobacteria : Insights Into Its Mechanism Of Action And Elucidation Of Its Interaction With The Transcription Machinery
(2010-09-30)Packaging of genomic DNA by proteins and super coiling into chromatin and chromatin-like structures (in bacteria) influences nearly all nuclear process such as replication, transcription, repair, and recombination. A ... -
Studies On Initiator tRNA Selection On The Ribosomes In Escherichia Coli
(2009-05-06)The studies reported in this thesis address the aspects of initiator tRNA selection in Escherichia Coli. A summary of the relevant literature discussing the process of ptotein biosynthesis in general and initiator tRNA ... -
Studies On The Expression Of The bgl Operon Of Escherichia Coli In Stationary Phase
(2010-03-19)The bgl operon of Escherichia coli, involved in the uptake and utilization of aromatic β-glucosides salicin and arbutin, is maintained in a silent state in the wild type organism by the presence of structural elements in ... -
A Study Of The Roles Played By The Trishanku Gene In The Morphogenesis Of Dictyostelium Discoideum
(2011-02-22)A hallmark feature of Dictyostelium development is the establishment and maintenance of precise cell-type proportions. In the case of D. discoideum, roughly 20% of the cells that aggregate form the stalk while the remaining ... -
T Cell Epitopes Of PE And PPE Family Of Proteins Of Mycobacterium Tuberculosis And Analysis Of Their Vaccine Potential
(2010-03-09)One-third of the world’s population is latently infected with Mycobacterium tuberculosis, which causes over 2 million deaths every year. The current live attenuated vaccine, Bacille Calmette-Guerin (BCG), protects against ... -
Transcriptional Regulation And The Role Of Galactose Metabolism In The Virulence Of Candida Albicans
(2009-06-24)Candida albicans, a commensal of gastrointestinal and uro-vaginal tract can cause superficial as well as life threatening disseminated infections under conditions of lowered immunity of the host such as HIV infection, ... -
Tree Diameter Growth : Variations And Demographic Niches In A Tropical Dry Forest Of Southern India
(2009-08-03)Tree growth influences forest community dynamics and responses to environmental variations, but currently is not well understood. Tree growth in highly diverse wet tropical forests have been well studied and characterised ... -
Type-II Ribosome Inactivating Proteins From Abrus Precatorius : Cytotoxicity And Mechanism Of Cell Death
(2009-05-21)Type-II Ribosome Inactivating Proteins from Abrus precatorius: Cytotoxicity and Mechanism of Cell Death A/B toxins produced by bacteria and plants are among the deadliest molecules known. The plant type-II ribosome ...