Microbiology (Theses and Dissertations): Recent submissions
Now showing items 61-80 of 95
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Gene regulation and the Fis nucleoid-associated protein in Salmonella enterica serovar Typhimurium
(Trinity College (Dublin, Ireland). Department of Microbiology, 2005)The Fis protein was found to influence the superhelical density of DNA and its ability to do this differed between Salmonella enterica serovar Typhimurium (S. typhimurium) and Escherichia coli (E. coli). Induction of the ... -
Investigation of microtubule inhibitors as potential antimalarial agents
(Trinity College (Dublin, Ireland). Department of Microbiology, 2005)Malaria is a parasitic infection of immense global importance. The most common and severe form of the disease is caused by the blood-bome apicomplexan parasite Plasmodium falciparum. The lack of an effective vaccine coupled ... -
Adhesion and invasion by Escherichia coli K1
(Trinity College (Dublin, Ireland). Department of Microbiology, 2006)Escherichia coli is one of the principal causes of septicaemia and meningitis in neonates. Sepsis occurs in approximately one in every thousand live births, with up to 10% progressing to develop meningitis. A disproportionate ... -
Characterisation of Sfh, a novel H-NS-like protein
(Trinity College (Dublin, Ireland). Department of Microbiology, 2006)Members of the H-NS protein family are widespread among Gram-negative bacteria and are known to influence gene expression at a global level. Shigella flexneri serotype 2a strain 2457T expresses three members of the H-NS ... -
Investigation of Plasmodium falciparum aminopeptidases and characterisation of the M17 leucine aminopeptidase
(Trinity College (Dublin, Ireland). Department of Microbiology, 2008)Plasmodium falciparum spends part of its life cycle residing in human erythrocytes, during which time it digests much of the host cell haemoglobin to provide a source of amino acids for synthesis of its own proteins. The ... -
Genetic diversity of Helicobactor pylori isolates through Microevolution in vivo
(Trinity College (Dublin, Ireland). Department of Microbiology, 2004)Chronic infection with H. pylori causes peptic ulcer disease and its presence is strongly linked with gastric adenocarcinoma and mucosa-associated lymphoid tissue (MALT) lymphoma. One of the most interesting characteristics ... -
Virulence gene regulation by nucleoid associated proteins in Salmonella typhimurium : a role for Fis in Salmonella pathogenicity island 2 gene regulation
(Trinity College (Dublin, Ireland). Department of Microbiology, 2004)Nucleoid associated proteins are involved in many diverse biological functions in S. typhimurium. In addition to their structural role within the genome they have been im plicated in transcriptional regulation of a variety ... -
Biogenesis of histone mRNAs in the yeast Saccharomyces cerevisiae
(Trinity College (Dublin, Ireland). Department of Microbiology, 2007)The typical eukaryotic human diploid cell contains 3.2x10 9 base pairs of deoxyribonucleic acid (DNA) which, if presented in an extended form, would measure 1.2m in length. The large amount of DNA is tightly wrapped and ... -
Construction and characterisation of a Semliki Forest virus vector based rubella prototype vaccine
(Trinity College (Dublin, Ireland). Department of Microbiology, 2007)Alphavirus vaccines such as those based on the Semliki Forest virus (SFV) replicon have been widely studied as candidate vaccines. Following intramuscular injection, dispersal of the RNA occurs to the local lymph node only, ... -
Characterization of peptide mimics to antigens chaperoned by Hsp70 in MDA-MB-231 breast tumour cells
(Trinity College (Dublin, Ireland). Department of Microbiology, 2005)Tumour-derived heat shock protein (Hsp) preparations have been shown to elicit anti-tumour immune responses in both mice and man. Analysis of Hsp preparations from tumour cells revealed that the immuno-protective property ... -
Examining the role of the probiotic candidate Lactobacillus salivarius in intestinal and immune homeostasis
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2019)A complex interplay exists between commensals of the gut microbiota, pathogenic bacteria and the host organism within the intestinal environment. The homeostasis of the intestinal epithelium and resident immune cells is ... -
Investigating influenza virus A pleomorphy
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2019)Clinical isolates of influenza A virus particles display a pleomorphic phenotype, where particles can range in size from 100 nm to 10 ?m in length while maintaining uniform diameters. Conversely, most laboratory-adapted ... -
Molecular characterisation of agn43 and its encoded protein, antigen 43, the major phase-variable outer membrane protein of Escherichia coli
(Trinity College (Dublin, Ireland). Department of Microbiology, 2001)A number of year ago workers in this laboratory identified antigen 43 (Ag43) during a systematic immunochemical analysis of the envelopes of Escherichia coli ML308-225 O13:O68:H . This Escherichia-specific outer membrane ... -
Characterisation of genotypic and phenotypic differences between Candida dubliniensis and Candida albicans
(Trinity College (Dublin, Ireland). Department of Microbiology, 2001)Summary -Candida dubliniensis is a recently described Candida species associated with oral candidosis in Human Immunodeficiency Virus (HIV)-infected and AIDS patients. The phylogenetic position of C. dubliniensis has ... -
Characterisation of SdrC, SdrD and SdrE from the serine-aspartate repeat family of Staphylococcus auerus
(Trinity College (Dublin, Ireland). Department of Microbiology, 2001)Staphylococcus aureus is an important human pathogen. The ability of S. aureus to initiate infection is attributed at least partly to the expression of cell wall-associated proteins known as MSCRAMMs (microbial surface ... -
Investigations into the pathogenesis of Dengue virus infections of humans : the endothelium as a target
(Trinity College (Dublin, Ireland). Department of Microbiology, 2001)The pathogenesis of the disease Dengue Haemorrhagic Fever/Dengue Shock Syndrome has not been elucidated. This study investigated the effects of Dengue virus, serotype 2 infection on both the human cell line ECV304/T-24 ... -
Investigating transcription and the histone methylation landscape in quiescent cells of Saccharomyces cerevisiae
(Trinity College (Dublin, Ireland). Department of Microbiology, 2015)Eukaryotic genomes are organised as the DNA-protein complex, chromatin within the cell nucleus. The fundamental subunit of chromatin is the nucleosome, which comprises 146 base pairs of DNA wrapped around an octamer of ... -
Analysis of the function of the N1 subdomain of MSCRAMMs of Staphylococcus aureus
(Trinity College (Dublin, Ireland). Department of Microbiology, 2014)The Microbial Surface Component Recognising Adhesive Matrix Molecules (MSCRAMMs) family of cell wall-associated proteins have recently been reclassified based on structure-function analysis. Under this new regime the MSCRAMM ... -
Biomass to biofuel : the engineering of Saccharomyces species for the co-fermentation of cellulose and xylose
(Trinity College (Dublin, Ireland). Department of Microbiology, 2015)Lignocellulose represents one of the most abundant biomass sources in the world. Its renewable and abundant nature makes it a prime target for use in bioethanol production. The efficient conversion of lignocellulosic biomass ... -
High-throughput investigation of virulence gene regulation by sRNAs in Salmonella Typhimurium
(Trinity College (Dublin, Ireland). Department of Microbiology, 2015)This study focused on novel gene regulatory systems in Salmonella enterics serovar Typhimurium, a model gram-negative, bacterial pathogen. The sRNA-mediated control of virulence genes was a particular emphasis. The research ...
