Organophosphate pesticide degradation: evolved enzymes and biomimetics for bioremediation and medicine. Organophosphate (OP) pesticides are an indispensable part of modern agriculture - their use results in dramatically increased crop yields. However, they are toxic and can damage the environment and cause significant health problems. Enzymes are currently being used to treat runoff water that is contaminated with OPs. The same enzymes also have the potential to aid in the treatment of OP poison ....Organophosphate pesticide degradation: evolved enzymes and biomimetics for bioremediation and medicine. Organophosphate (OP) pesticides are an indispensable part of modern agriculture - their use results in dramatically increased crop yields. However, they are toxic and can damage the environment and cause significant health problems. Enzymes are currently being used to treat runoff water that is contaminated with OPs. The same enzymes also have the potential to aid in the treatment of OP poisoning. However, OP degrading enzymes could be improved in many ways - we will evolve these enzymes to enhance their catalytic properties - to enable them to act more efficiently on an increased number of OPs. Read moreRead less
The molecular biology and biochemistry of bacterial manganese oxidation. This project will further the understanding of bacterial manganese (Mn2+) oxidation. A multi-disciplinary approach will be used to further investigate the genetics and biochemistry of the Mn2+-oxidising systems of Pseudomonas putida, Leptothrix sp. and Pedomicrobium sp. This work will focus in particular on comparing the Mn2+-oxidising systems from unrelated bacteria. A combination of molecular biology, protein biochemis ....The molecular biology and biochemistry of bacterial manganese oxidation. This project will further the understanding of bacterial manganese (Mn2+) oxidation. A multi-disciplinary approach will be used to further investigate the genetics and biochemistry of the Mn2+-oxidising systems of Pseudomonas putida, Leptothrix sp. and Pedomicrobium sp. This work will focus in particular on comparing the Mn2+-oxidising systems from unrelated bacteria. A combination of molecular biology, protein biochemistry and spectroscopy will be used. This will be the first time that the enzymes of bacterial Mn2+-oxidation will have been characterised in such detail and will lead to a greater understanding of the process of bacterial manganese oxidation.Read moreRead less
Directed evolution of enzymes for bioremediation: structure function studies of bimetalloenzymes. We will evolve enzymes that degrade organophosphate pesticides (OPs) that are used in Australian agriculture. Although these OPs were designed to kill insects they are closely related to chemical warfare agents and are known to be toxic to humans. Bacteria have acquired a number of enzymes that degrade some OPs. One such enzyme has been used in field trials demonstrating its potential to degrade OP ....Directed evolution of enzymes for bioremediation: structure function studies of bimetalloenzymes. We will evolve enzymes that degrade organophosphate pesticides (OPs) that are used in Australian agriculture. Although these OPs were designed to kill insects they are closely related to chemical warfare agents and are known to be toxic to humans. Bacteria have acquired a number of enzymes that degrade some OPs. One such enzyme has been used in field trials demonstrating its potential to degrade OP residues. However, many pesticides are not removed rapidly and OP-degrading enzymes require modification(s) if they are to be useful environmental reagents - this can be achieved with directed evolution. Read moreRead less
Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laborator ....Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laboratory techniques and DNA identification methods to provide a template for determining ground water diversity and food web dynamics throughout Australia. This project will lead to a better understanding of how to manage ground water in a sustainable manner.Read moreRead less
Community-level selection: Empirical tests in a microbial system. Given the profile of the question of community-level selection as a long-running controversy, the main benefit of the proposed work, which will critically test the idea in an empirical system, will be to increase recognition of Australia's position as a research nation in evolutionary biology. In exploring mechanisms of floc formation, a key component of wastewater treatment, the work will establish important foundations for impro ....Community-level selection: Empirical tests in a microbial system. Given the profile of the question of community-level selection as a long-running controversy, the main benefit of the proposed work, which will critically test the idea in an empirical system, will be to increase recognition of Australia's position as a research nation in evolutionary biology. In exploring mechanisms of floc formation, a key component of wastewater treatment, the work will establish important foundations for improving the efficiency of wastewater treatment. Improvement in performance of only a few percent will bring important economic savings. This is evidenced by recent commitment of >$US 230 billion to improving the efficiency of wastewater treatment in Germany, Italy and Spain over 5 years.Read moreRead less
MOLECULAR BREEDING OF CYTOCHROME P450 ENZYMES. Cytochrome P450s are enzymes that catalyse an impressive array of oxidative transformations. However, there is little available data on how to modify their substrate specificity and generate tailored biocatalysts. We plan to use an emerging technology known as DNA shuffling to create libraries of P450s with varying activities. These will then be screened for enzymes that can catalyse the formation of indigo (a blue dye) and indirubin (a chemother ....MOLECULAR BREEDING OF CYTOCHROME P450 ENZYMES. Cytochrome P450s are enzymes that catalyse an impressive array of oxidative transformations. However, there is little available data on how to modify their substrate specificity and generate tailored biocatalysts. We plan to use an emerging technology known as DNA shuffling to create libraries of P450s with varying activities. These will then be screened for enzymes that can catalyse the formation of indigo (a blue dye) and indirubin (a chemotherapeutic agent). The enzymes that catalyse indigo formation will be useful in the production of coloured transgenic plants and those that produce indirubin will have a role in gene therapy.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0560657
Funder
Australian Research Council
Funding Amount
$740,000.00
Summary
Ultra-High Resolution NMR Imaging System for Nanotechnology including Nanobiotechnology. The ultra-high resolution imaging NMR spectrometer at the centre of this application is a generation ahead of comparable facilities in Australia and will extend the research capacity of numerous research groups comprising in excess of 50 academics and postgraduate students. The aims and significance of this infrastructure lie in it being one of the centrepieces of the partner institutions' aspirations to tak ....Ultra-High Resolution NMR Imaging System for Nanotechnology including Nanobiotechnology. The ultra-high resolution imaging NMR spectrometer at the centre of this application is a generation ahead of comparable facilities in Australia and will extend the research capacity of numerous research groups comprising in excess of 50 academics and postgraduate students. The aims and significance of this infrastructure lie in it being one of the centrepieces of the partner institutions' aspirations to take Australia to the cutting edge of nanotechnology and cognate disciplines many of which are areas of national priority. The expected manifold outcomes include research of the highest rank into fundamental problems of drug development through to applied outcomes such as new nanomaterials and improved horticulture/fruit preservation.Read moreRead less
BIOCATALYSTS MINED FROM CYTOCHROME P450 LIBRARIES: AN INNOVATIVE TOOL FOR ACCELERATING DRUG DEVELOPMENT. The cytochrome P450s (P450s) are a family of enzymes that are perhaps the most versatile biological catalysts known. DNA shuffling is an emerging technique that takes the genes encoding families of enzymes and creates libraries of catalysts with both improved and novel properties. We will obtain proof of concept that shuffled P450 libraries can be screened and optimized for use as biocatalys ....BIOCATALYSTS MINED FROM CYTOCHROME P450 LIBRARIES: AN INNOVATIVE TOOL FOR ACCELERATING DRUG DEVELOPMENT. The cytochrome P450s (P450s) are a family of enzymes that are perhaps the most versatile biological catalysts known. DNA shuffling is an emerging technique that takes the genes encoding families of enzymes and creates libraries of catalysts with both improved and novel properties. We will obtain proof of concept that shuffled P450 libraries can be screened and optimized for use as biocatalysts in drug development. The methodologies developed here will overcome two critical bottlenecks in current drug development: the optimisation and metabolic profiling of new drug candidates. This will yield important benefits in accelerating the optimisation and safety testing of drugs under development.Read moreRead less
Plant heterotrimeric G proteins: new roles in defence, stomatal control and ABA perception. Agriculture is an important economic activity in Australia that results in considerable export revenues. Two of the major problems facing agriculture around the globe are the incidence of diseases and the scarcity of water. Agricultural losses caused by plant pathogens and low water availability account for billions of dollars every year and have profound economic and social implications. Water is an extr ....Plant heterotrimeric G proteins: new roles in defence, stomatal control and ABA perception. Agriculture is an important economic activity in Australia that results in considerable export revenues. Two of the major problems facing agriculture around the globe are the incidence of diseases and the scarcity of water. Agricultural losses caused by plant pathogens and low water availability account for billions of dollars every year and have profound economic and social implications. Water is an extremely scarce resource in Australia and periodic droughts inflict immense losses to the Australian agricultural sector. Our research will explore new and cleaner strategies to provide crop protection as well as to increase water use efficiency.Read moreRead less
Understanding mechanistic and systemic regulation of protein prenyltransferases. The proposed research will expand our understanding of lipid-conjugating enzymes that are critical for a multitude of normal cellular functions. We seek to reveal the basic workings of cells and help to explain the development and complexity of signalling networks in eukaryotic evolution. The findings will enable us to explore and exploit the catalytic properties of these lipid-related enzymes for applications in bi ....Understanding mechanistic and systemic regulation of protein prenyltransferases. The proposed research will expand our understanding of lipid-conjugating enzymes that are critical for a multitude of normal cellular functions. We seek to reveal the basic workings of cells and help to explain the development and complexity of signalling networks in eukaryotic evolution. The findings will enable us to explore and exploit the catalytic properties of these lipid-related enzymes for applications in biotechnology. The ultimate aim is to create novel technologies for protein production, modification and analysis that will accelerate the pace of discovery in protein research, basic cell and organism biology, diagnostics, biotechnology and drug discovery. Read moreRead less