Synthesis and assembly of bacterial repeat unit polysaccharides. Bacteria make an enormous range of surface polysaccharides. The complexity was first appreciated as antigenic diversity, but we now have hundreds of chemical structures and perhaps a hundred sequences of their gene clusters, but the number in nature must be many thousands. Our knowledge of gene function is growing but is not keeping up with the discovery of new sequences and structures. The aim is to determine structure and functio ....Synthesis and assembly of bacterial repeat unit polysaccharides. Bacteria make an enormous range of surface polysaccharides. The complexity was first appreciated as antigenic diversity, but we now have hundreds of chemical structures and perhaps a hundred sequences of their gene clusters, but the number in nature must be many thousands. Our knowledge of gene function is growing but is not keeping up with the discovery of new sequences and structures. The aim is to determine structure and function of key O antigen processing genes and the functions of a range of glycosyl transferases, and to use the information to generate novel gene clusters to synthesise novel polysaccharidesRead moreRead less
Elucidation of bacterial glycosylytransferase specificity. The benefits are involvement in the growth area of polysaccharide research, with potential for major industrial spin off. Polysaccharides are critical in all organisms as signalling, structural and storage compounds. Bacteria make a wide variety with extensive use of unusual sugars, some with uses from oil emulsifiers to food thickeners. The project is on the enzymes that assemble bacterial polysaccharides. We are world leaders in genet ....Elucidation of bacterial glycosylytransferase specificity. The benefits are involvement in the growth area of polysaccharide research, with potential for major industrial spin off. Polysaccharides are critical in all organisms as signalling, structural and storage compounds. Bacteria make a wide variety with extensive use of unusual sugars, some with uses from oil emulsifiers to food thickeners. The project is on the enzymes that assemble bacterial polysaccharides. We are world leaders in genetics of the gene clusters especially synthesis of the unusual sugars. We now aim to fill a major gap by determining which enzymes make which bonds, leading to options for new gene combinations and novel structures. We have a lead in research in this area and Australia gains if we maintain that lead.Read moreRead less
Functional and structural diversity of the cathepsin L peptidase from the human blood fluke Schistosoma mansoni. Peptidases are enzymes that are important in many infectious and physiological disease states. For example, they are used by infectious pathogens to enter human tissues and survive inside their bodies. The same type of enzymes also contribute to tissue damage in many pathological processes in humans such as cancer, arithritis and osteoporosis. There is an urgent need to define their s ....Functional and structural diversity of the cathepsin L peptidase from the human blood fluke Schistosoma mansoni. Peptidases are enzymes that are important in many infectious and physiological disease states. For example, they are used by infectious pathogens to enter human tissues and survive inside their bodies. The same type of enzymes also contribute to tissue damage in many pathological processes in humans such as cancer, arithritis and osteoporosis. There is an urgent need to define their structure and properties so that we can employ rational approaches to develop new drugs that can combat these diseases and ailments. Read moreRead less
Aminopeptidases involved in regulating the amino acid pool in malaria parasites. Aminopeptidases are pivotal to the normal functions of all cells. Abnormalities in their function and/or structure results in tissue damage in many pathological processes in humans such as cancer, neuronal diseases and hormonal action. They are also critical to viral, bacterial and parasitic infections as they are employed to remove amino acids from the host for use in building their own proteins. This project bring ....Aminopeptidases involved in regulating the amino acid pool in malaria parasites. Aminopeptidases are pivotal to the normal functions of all cells. Abnormalities in their function and/or structure results in tissue damage in many pathological processes in humans such as cancer, neuronal diseases and hormonal action. They are also critical to viral, bacterial and parasitic infections as they are employed to remove amino acids from the host for use in building their own proteins. This project brings national and international expertise together to define the structure and biological properties of these essential enzymes so that in the future we can employ rational approaches to develop new drugs that can combat these diseases and ailments.Read moreRead less
In vivo imaging of the immune system in self tolerance and infectious disease. This proposal will introduce sophisticated imaging technology into our cutting-edge research program. Our approach will permit high resolution imaging of the immune response within an intact animal; currently not possible in Australia at the present time. The unique combination of technology and biological resources will significantly advance knowledge in key areas of basic immunology research. It will provide local ....In vivo imaging of the immune system in self tolerance and infectious disease. This proposal will introduce sophisticated imaging technology into our cutting-edge research program. Our approach will permit high resolution imaging of the immune response within an intact animal; currently not possible in Australia at the present time. The unique combination of technology and biological resources will significantly advance knowledge in key areas of basic immunology research. It will provide local researchers insights into how the body responds to infectious disease and immune-related disorders and be directly applicable to vaccine design. The facility and related research program will undoubtedly attract a team of top-level national and international scientists and students keen to work with this advanced technology.Read moreRead less
Disulfide Bonds and Protein Folding. This work will advance our understanding of protein folding, which has important implications in biotechnology, impacting on commercial production of recombinant proteins (for pharmaceutical and biomedical applications) and on 1000s of research laboratories worldwide that use recombinant technologies. This research could also contribute to medicine (new treatments for diseases of protein misfolding like Alzheimer's), and to membrane protein structural biology ....Disulfide Bonds and Protein Folding. This work will advance our understanding of protein folding, which has important implications in biotechnology, impacting on commercial production of recombinant proteins (for pharmaceutical and biomedical applications) and on 1000s of research laboratories worldwide that use recombinant technologies. This research could also contribute to medicine (new treatments for diseases of protein misfolding like Alzheimer's), and to membrane protein structural biology. This work could yield economic benefits in the long-term through patentable outcomes and will benefit the community by producing high impact research papers, providing training to Australians and forging links with renowned international scientists.Read moreRead less