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A structural investigation into the peptide-loading complex molecular machine. The proposed research program, using laboratory-based and synchrotron-based radiation, will provide fundamental insight into a process central to immunity, namely antigen presentation. Investigating the process of Antigen presentation is important, as it will further our understanding how a cell is "ear-marked" for being infected by viruses or bacteria. Such knowledge will increase Australia's international research ....A structural investigation into the peptide-loading complex molecular machine. The proposed research program, using laboratory-based and synchrotron-based radiation, will provide fundamental insight into a process central to immunity, namely antigen presentation. Investigating the process of Antigen presentation is important, as it will further our understanding how a cell is "ear-marked" for being infected by viruses or bacteria. Such knowledge will increase Australia's international research standing.Read moreRead less
An X-ray crystallographic investigation into co-receptors on T-lymphocytes. T lymphocytes are an indispensable cellular component of the immune system. The normal process of T cell selection in the thymus, and the ability of mature T cells to respond to foreign antigens are governed by receptor recognition and co-receptor mediated events. The co-receptors encompass a wide spectrum of structurally diverse proteins that are involved in adhesion, co-ligation and signal transduction. This proposa ....An X-ray crystallographic investigation into co-receptors on T-lymphocytes. T lymphocytes are an indispensable cellular component of the immune system. The normal process of T cell selection in the thymus, and the ability of mature T cells to respond to foreign antigens are governed by receptor recognition and co-receptor mediated events. The co-receptors encompass a wide spectrum of structurally diverse proteins that are involved in adhesion, co-ligation and signal transduction. This proposal aims to investigate, using X-ray crystallography as the primary research tool, co- receptors located on T-lymphocytes. This work will gain fundamental insights into co-receptor function.Read moreRead less
The functional organisation of the trans-Golgi network: From cultured cells to physiological systems. This research will result in a better understanding of the secretory pathway of all eukaryotic cells, a process of broad biological and biomedical significance. It will impact on cell biology in the broadest sense, from membrane biogenesis to lipid domain organization, as well as membrane transport, protein structure and protein targeting. Furthermore, this work will utilize and develop fronti ....The functional organisation of the trans-Golgi network: From cultured cells to physiological systems. This research will result in a better understanding of the secretory pathway of all eukaryotic cells, a process of broad biological and biomedical significance. It will impact on cell biology in the broadest sense, from membrane biogenesis to lipid domain organization, as well as membrane transport, protein structure and protein targeting. Furthermore, this work will utilize and develop frontier technologies of live cell imaging and RNA interference as a genetic tool to investigate functions of a protein family. By training post-graduate students and post-doctoral staff, it will contribute to the expertise of cell biology in Australia. International collaborations will enhance connections between Australia and overseas research.Read moreRead less
The structure and function of the trans-Golgi network: role of golgins and G proteins. This research will provide a better understanding of the secretory pathway of all eukaryotic cells, a process of broad biological and biomedical significance. It will also contribute to a better understanding of how a cell works, including how cell membranes are organization, how the transport processes of the cell are regulated and how proteins are targeted to their intracellular destination. Further, this ....The structure and function of the trans-Golgi network: role of golgins and G proteins. This research will provide a better understanding of the secretory pathway of all eukaryotic cells, a process of broad biological and biomedical significance. It will also contribute to a better understanding of how a cell works, including how cell membranes are organization, how the transport processes of the cell are regulated and how proteins are targeted to their intracellular destination. Further, this work will utilize the frontier technology of RNA interference as a genetic tool to investigate functions of genes. By training post-graduate students and post-doctoral staff, it will contribute to the expertise of cell biology in Australia. International collaborations will enhance connections with overseas researchers.Read moreRead less
The role of a novel family of Golgi proteins in maintaining the structure and function of the trans-Golgi network. The secretory pathway of eukaryotic cells is fundamental for proper cell growth. The Golgi apparatus is a key organelle of this pathway where newly made proteins are selectively packaged into membrane-bound transport vehicles and then shipped to their correct destination, such as the surface of the cell. This research aims to understand the mechanism by which these cargo-loaded tr ....The role of a novel family of Golgi proteins in maintaining the structure and function of the trans-Golgi network. The secretory pathway of eukaryotic cells is fundamental for proper cell growth. The Golgi apparatus is a key organelle of this pathway where newly made proteins are selectively packaged into membrane-bound transport vehicles and then shipped to their correct destination, such as the surface of the cell. This research aims to understand the mechanism by which these cargo-loaded transport vehicles are generated from the Golgi apparatus. This information is of fundamental importance in understanding how a cell survives and grows, and is necessary to allow a rational basis for the engineering of secreted recombinant molecules.Read moreRead less
Tail-anchored membrane proteins: prediction, targeting, assembly and function. Using computer-based searches of genome sequence data, we now have a complete list of tail-anchored membrane proteins in the yeast Saccharomyces cerevisiae. These include a number of essential proteins, such as SNAREs and TOM proteins responsible for building cellular membranes in all organisms, including man. Of the additional protein sequences discovered in the search, 8 represent proteins of known function while 19 ....Tail-anchored membrane proteins: prediction, targeting, assembly and function. Using computer-based searches of genome sequence data, we now have a complete list of tail-anchored membrane proteins in the yeast Saccharomyces cerevisiae. These include a number of essential proteins, such as SNAREs and TOM proteins responsible for building cellular membranes in all organisms, including man. Of the additional protein sequences discovered in the search, 8 represent proteins of known function while 19 are novel. We propose to study the subcellular location of these 19 novel proteins, and solve how they are targeted to and inserted in membranes. We will also investigate the function of the newly-discovered proteins.Read moreRead less
Cell biology of gastric acid secretion. This research will result in a better understanding of the membrane structures in cells. In turn, this information could be exploited to manipulate ion transport, uptake, secretion of biological molecules, signal transduction events and the delivery and uptake of drugs in a number of disease situations thus leading to more effective therapies.
Furthermore, this work will utilise and develop state-of-the-art technologies, contributing to national competiti ....Cell biology of gastric acid secretion. This research will result in a better understanding of the membrane structures in cells. In turn, this information could be exploited to manipulate ion transport, uptake, secretion of biological molecules, signal transduction events and the delivery and uptake of drugs in a number of disease situations thus leading to more effective therapies.
Furthermore, this work will utilise and develop state-of-the-art technologies, contributing to national competitiveness in this area. A number of students and postdoctoral fellows will be trained as a consequence of working on this project
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Structure and function of the protein translocation channels in the mitochondrial outer membrane. Biological membranes are the basis of life and understanding how proteins are inserted into membranes is a major goal in the Biological Sciences. The TOM complex is a molecular machine mediating protein insertion into a biological membrane. Recent successes with X-ray diffraction of protein crystals, and solution and solid-state NMR spectroscopy have heralded leaps-and-bound advances for our knowled ....Structure and function of the protein translocation channels in the mitochondrial outer membrane. Biological membranes are the basis of life and understanding how proteins are inserted into membranes is a major goal in the Biological Sciences. The TOM complex is a molecular machine mediating protein insertion into a biological membrane. Recent successes with X-ray diffraction of protein crystals, and solution and solid-state NMR spectroscopy have heralded leaps-and-bound advances for our knowledge of how membranes work at the molecular level. Using a combination of phylogenetic analysis, yeast genetics and these new techniques from structural biology, we will characterize the structure and function of the core from the TOM complex.Read moreRead less
Transporting proteins to and within mitochondria. Mitochondria are found in all of our cells and are essential for life. They act like a nuclear power plant, providing the bulk of energy - but they can also kill the cell if the mitochondrial wall (membrane) is opened. Mitochondria contain about 1000 different proteins to function properly but almost all of them are made outside the compartment and must squeeze in through narrow membrane channels. This project will provide new insights into how p ....Transporting proteins to and within mitochondria. Mitochondria are found in all of our cells and are essential for life. They act like a nuclear power plant, providing the bulk of energy - but they can also kill the cell if the mitochondrial wall (membrane) is opened. Mitochondria contain about 1000 different proteins to function properly but almost all of them are made outside the compartment and must squeeze in through narrow membrane channels. This project will provide new insights into how proteins get into mitochondria and what factors help in this process. Besides providing new information about a process that is essential for life, the project will train students in molecular cellular biology techniques and will help foster strong international collaborations.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0226463
Funder
Australian Research Council
Funding Amount
$160,000.00
Summary
Fluorescence Lifetime Imaging Facility. The aim of this proposal is to establish the first fluorescence lifetime imaging facility (FLIM) in Australia. The imaging technique provided by the new facility when combined with the use of novel fluorescent protein technology will enable many different events, represented by protein-protein interactions, to be non-invasively, visualised spatially and temporally inside the living cell. The new facility will provide timely state-of -the-art infrastructu ....Fluorescence Lifetime Imaging Facility. The aim of this proposal is to establish the first fluorescence lifetime imaging facility (FLIM) in Australia. The imaging technique provided by the new facility when combined with the use of novel fluorescent protein technology will enable many different events, represented by protein-protein interactions, to be non-invasively, visualised spatially and temporally inside the living cell. The new facility will provide timely state-of -the-art infrastructure necessary for research groups to further develop and maintain their international reputations, will build stronger research collaborations between partner institutions and will attract researchers from overseas.Read moreRead less