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Feeding and digestion in tropical rock lobster phyllosoma larvae and its applications for culture. Provision of larval culture diets that provide optimal nutrition in a suitable presentation format is the major challenge for developing a rock lobster aquaculture industry. Tropical rock lobsters are likely contenders due to their faster growth rates and shorter larval phase than temperate species. This project will assess the ingestive and digestive capabilities of larvae during development, thro ....Feeding and digestion in tropical rock lobster phyllosoma larvae and its applications for culture. Provision of larval culture diets that provide optimal nutrition in a suitable presentation format is the major challenge for developing a rock lobster aquaculture industry. Tropical rock lobsters are likely contenders due to their faster growth rates and shorter larval phase than temperate species. This project will assess the ingestive and digestive capabilities of larvae during development, through an examination of mouthpart and gut structure and their types and concentration of digestive enzymes. Information will be used to formulate and test improved diets of appropriate size, texture and nutritional composition and will be the first comprehensive analysis of preferred larval diets on the basis of their biological and physiological characteristics.Read moreRead less
A global approach to structure, assembly and function of yeast mitochondrial ATP synthase. ATP synthase is responsible for the synthesis of the ubiquitous energy substance ATP in living cells. This multisubunit enzyme complex is a molecular rotatory motor whose mechanism relies on functional dynamic interactions of the component protein subunits of the complex. Using a combination of powerful and sophisticated molecular biology techniques the functional and dynamic contacts made by subunits wi ....A global approach to structure, assembly and function of yeast mitochondrial ATP synthase. ATP synthase is responsible for the synthesis of the ubiquitous energy substance ATP in living cells. This multisubunit enzyme complex is a molecular rotatory motor whose mechanism relies on functional dynamic interactions of the component protein subunits of the complex. Using a combination of powerful and sophisticated molecular biology techniques the functional and dynamic contacts made by subunits within the complex, or between ATP synthase and other enzyme complex involved in energy production (including other ATP synthase complexes) will be investigated. New and significant insights into one of the most fundamental and challenging enzymes of life will be obtained.Read moreRead less
The Structure Function and Biology of Serpins. The serpin family of proteins control protease activity, in a variety of biological systems, via a dramatic conformational change. We are 4 leaders in the serpin reseacrh field using an integrated approach of biochemistry, biophysics, molecular biology, cell biology, structural biology and bioinformatics to analyse every facet of serpin structure, function and biology. We will apply and develop novel technologies that will determine how these confor ....The Structure Function and Biology of Serpins. The serpin family of proteins control protease activity, in a variety of biological systems, via a dramatic conformational change. We are 4 leaders in the serpin reseacrh field using an integrated approach of biochemistry, biophysics, molecular biology, cell biology, structural biology and bioinformatics to analyse every facet of serpin structure, function and biology. We will apply and develop novel technologies that will determine how these conformational changes are achieved and how they are controlled. Our increased understanding of this inhibitor - enzyme interaction will have implications to other proteins which undergo conformational change and biotechnology.Read moreRead less
Structural and functional studies on prokaryote serpins. Proteins are the machines of life, many of which undergo complex movements to achieve function. The basic research described in this proposal will result in major outcomes in understanding how proteins fold, undergo complex changes in conformation, and misfold to dysfunctional states. As a result, the study will contribute fundamental knowledge that will underpin research in the fields of structural biology, protein design and protein fo ....Structural and functional studies on prokaryote serpins. Proteins are the machines of life, many of which undergo complex movements to achieve function. The basic research described in this proposal will result in major outcomes in understanding how proteins fold, undergo complex changes in conformation, and misfold to dysfunctional states. As a result, the study will contribute fundamental knowledge that will underpin research in the fields of structural biology, protein design and protein folding. Through providing insight into protein misfolding, the work will will contribute to our understanding of degenerative misfolding pathologies that affect the ageing population and thus targets the 'ageing well ageing productively' priority goal.Read moreRead less
How Bacteria Fold Virulence Factors to Cause Disease. Bacteria use folding enzymes to assemble proteins essential for cell integrity and pathogenicity. These foldases include the Disulphide bridge proteins, which catalyse the introduction of disulfide bonds. This project will study two important human pathogens, Salmonella Typhimurium and uropathogenic Escherichia coli, to address the fundamental and poorly understood questions of diversity of Dsb networks across bacterial pathogens and the role ....How Bacteria Fold Virulence Factors to Cause Disease. Bacteria use folding enzymes to assemble proteins essential for cell integrity and pathogenicity. These foldases include the Disulphide bridge proteins, which catalyse the introduction of disulfide bonds. This project will study two important human pathogens, Salmonella Typhimurium and uropathogenic Escherichia coli, to address the fundamental and poorly understood questions of diversity of Dsb networks across bacterial pathogens and the role of these foldases in virulence. The research will reveal how bacterial virulence factors are folded, identify novel targets for therapeutic intervention and provide the basis for structure-based design on new antimicrobials in the future. Read moreRead less
Mitochondrial proteases and their contribution to protein homeostasis. This research will examine how a critically important cellular organelle known as the mitochondrion maintains its functional integrity by sensing and signalling protein perturbations. As mitochondrial dysfunction is central to a number of neurodegenerative diseases understanding the molecular biology of this fundamentally important cellular process could, in the future, provide for better health outcomes for an aging Australi ....Mitochondrial proteases and their contribution to protein homeostasis. This research will examine how a critically important cellular organelle known as the mitochondrion maintains its functional integrity by sensing and signalling protein perturbations. As mitochondrial dysfunction is central to a number of neurodegenerative diseases understanding the molecular biology of this fundamentally important cellular process could, in the future, provide for better health outcomes for an aging Australian population. The training of post-graduate students is an integral component of this study and thus will contribute to building national research capacity. International collaborations and new discoveries will also contribute to the recognition of Australian research.Read moreRead less
Plasmin is a complex enzyme that performs major roles in removal of blood clots, wound healing and in tumor metastasis. Here we will understand how plasmin function is regulated at the molecular level. These key insights will be of future use in the development of therapeutics targeting the plasmin system in cancer and clotting diseases.
Molecular mechanisms of novel bacterial copper defense proteins. This project aims to reveal molecular and cellular mechanisms used by bacteria to neutralise the destructive effects of copper. Copper is an essential trace element in living systems. It is toxic to bacteria and so plays a vital role in nutritional immunity. To counteract copper toxicity, bacteria have evolved defense mechanisms. The project will investigate a novel but poorly understood class of bacterial proteins, the suppressor ....Molecular mechanisms of novel bacterial copper defense proteins. This project aims to reveal molecular and cellular mechanisms used by bacteria to neutralise the destructive effects of copper. Copper is an essential trace element in living systems. It is toxic to bacteria and so plays a vital role in nutritional immunity. To counteract copper toxicity, bacteria have evolved defense mechanisms. The project will investigate a novel but poorly understood class of bacterial proteins, the suppressor of copper sensitivity proteins, that contribute to this key virulence trait. The expected outcomes will be fundamental new knowledge of metallo-protein diversity, bacterial virulence mechanisms, and membrane protein function with potential impact on health, environment, and biotechnology.Read moreRead less
The role of the protease inhibitor Serpinb9 in antigen cross-presentation by dendritic cells. This project will provide fundamental new insights into antigen cross-presentation, a crucial facet of the immune system's response to viral infection or neoplastic cells. It will also provide a basis for future studies into mechanisms of immune tolerance and enhance our understanding of autoimmune disease.
Discovery Early Career Researcher Award - Grant ID: DE190100304
Funder
Australian Research Council
Funding Amount
$416,092.00
Summary
Understanding intramolecular regulation of ubiquitin enzymes. This project aims to combine structural, biophysical and functional studies to characterise how ubiquitin enzymes are regulated. Ubiquitination controls essential cellular pathways in all eukaryotes and this project expects to generate new knowledge regarding the vital regulation of this process. This project expects to develop broadly applicable techniques for investigating protein conformation and self-association as a means of cont ....Understanding intramolecular regulation of ubiquitin enzymes. This project aims to combine structural, biophysical and functional studies to characterise how ubiquitin enzymes are regulated. Ubiquitination controls essential cellular pathways in all eukaryotes and this project expects to generate new knowledge regarding the vital regulation of this process. This project expects to develop broadly applicable techniques for investigating protein conformation and self-association as a means of controlling catalytic activity. The project should significantly increase understanding of several modes of regulation of ubiquitin ligase catalytic activity, and how this controls a myriad of cellular processes. The project will lay the foundation for applied research anti-viral compounds, plant anti-fungals and cancer therapies.Read moreRead less