Membrane Attack Complex / Perforin like proteins in Defence, Attack and Developmental Biology. This proposal will result in a major advancement of knowledge, for example, in our understanding of the emerging links between immunity and development as well as the role and mechanism of function of the pore forming family of MACPF proteins in host defence, attack, embryo development and diseases such as cancer. These data will be crucial for developing approaches to control unwanted MACPF function, ....Membrane Attack Complex / Perforin like proteins in Defence, Attack and Developmental Biology. This proposal will result in a major advancement of knowledge, for example, in our understanding of the emerging links between immunity and development as well as the role and mechanism of function of the pore forming family of MACPF proteins in host defence, attack, embryo development and diseases such as cancer. These data will be crucial for developing approaches to control unwanted MACPF function, for example in disease such as diabetes or transplant rejection. Furthermore, a detailed understanding of how MACPF proteins assemble into rings and punch holes in membranes will facilitate the development of these proteins as technological tools.Read moreRead less
Delineating the role of the GxxxG motif in transmembrane protein metabolism. This study will define how a well defined motif involved in transmembrane interactions affects the metabolism of proteins. Since this motif is present in proteins involved in Alzheimer's disease it has potential benefits for community health and combating ageing.
What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide dif ....What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide diffusion within leaves and key steps in this process will be identified through the use of Arabidopsis mutants. Better representation of this process in models will improve estimates of terrestrial photosynthesis and climate change forecastsRead moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0882295
Funder
Australian Research Council
Funding Amount
$225,000.00
Summary
X-ray crystallography resource for membrane proteins and large macromolecular complexes. Structural biology is the underpinning of biotechnology, biopharmaceuticals and rational therapeutic design. The most successful technique for determining the structures of proteins and large macromolecular complexes is x-ray crystallography. This proposal will set up a network of state of the art resources in the Sydney region to capitalise on expertise in these areas. The facilities will foster basic re ....X-ray crystallography resource for membrane proteins and large macromolecular complexes. Structural biology is the underpinning of biotechnology, biopharmaceuticals and rational therapeutic design. The most successful technique for determining the structures of proteins and large macromolecular complexes is x-ray crystallography. This proposal will set up a network of state of the art resources in the Sydney region to capitalise on expertise in these areas. The facilities will foster basic research and collaborations with industry, which will enhance Australia's profile and commercialisation of research. The facility will enhance the usage of the Australian synchrotron, producing flagship projects on the edge of technical possibilities.Read moreRead less
Structure, dynamics and interactions of Plasmodium falciparum merozoite surface protein-2. The solution structure of the merozoite surface protein-2 (MSP-2), from Plasmodium falciparum the causative agent of malaria, will be determined along with an analysis of the motions of residues within the protein. This will allow insights into interactions occurring at the surface coat of the organism, where MSP-2 is a major component. An understanding of how this protein interacts with antibodies of the ....Structure, dynamics and interactions of Plasmodium falciparum merozoite surface protein-2. The solution structure of the merozoite surface protein-2 (MSP-2), from Plasmodium falciparum the causative agent of malaria, will be determined along with an analysis of the motions of residues within the protein. This will allow insights into interactions occurring at the surface coat of the organism, where MSP-2 is a major component. An understanding of how this protein interacts with antibodies of the host's immune system will also be gained. The techniques established during the study of MSP-2 will be useful for the study of larger proteins and protein complexes from many systems in the future.Read moreRead less
Molecular and Cellular Characterisations of the Cortical Actin Cytoskeleton in the Plant Arabidopsis thaliana. Plant cells contain extensive arrays of the cytoskeletal protein actin that attach to the plasma membrane and may play important roles in cell elongation through interactions with cortical microtubules. However, the organisation, dynamics and functions of cortical actin remain poorly understood. I will combine cell and molecular approaches to understanding cortical actin in living tissu ....Molecular and Cellular Characterisations of the Cortical Actin Cytoskeleton in the Plant Arabidopsis thaliana. Plant cells contain extensive arrays of the cytoskeletal protein actin that attach to the plasma membrane and may play important roles in cell elongation through interactions with cortical microtubules. However, the organisation, dynamics and functions of cortical actin remain poorly understood. I will combine cell and molecular approaches to understanding cortical actin in living tissue of Arabidopsis, using both wild-type and previously uncharacterised mutants, and will develop a novel mutational screening strategy to isolate mutants disrupted in plasma membrane or microtubule binding. This research will contribute significantly to a greater understanding of how the plant grows and develops.Read moreRead less
Phloem unloading of sucrose: cloning, functional characterisation and regulation of novel membrane transporters. Sucrose is the principal form in which plant biomass, produced in photosynthetic leaves, is transported to non-photosynthetic organs for growth and storage. Sucrose transport proteins play pivotal roles in facilitating sucrose transport around plants. Hence activities of sucrose transporters directly impact on plant growth rates and crop yields. Our aim is to isolate hitherto unkno ....Phloem unloading of sucrose: cloning, functional characterisation and regulation of novel membrane transporters. Sucrose is the principal form in which plant biomass, produced in photosynthetic leaves, is transported to non-photosynthetic organs for growth and storage. Sucrose transport proteins play pivotal roles in facilitating sucrose transport around plants. Hence activities of sucrose transporters directly impact on plant growth rates and crop yields. Our aim is to isolate hitherto unknown membrane proteins that move sucrose at high rates between cells and discover their transport properties. Expected outcomes are to better understand mechanisms and regulation of sucrose transport and hence provide novel opportunities to enhance crop yield. The project will foster a productive international collaboration.Read moreRead less
Multifunctional channels as key components of biotrophic interfaces in legumes. In legumes there are two types of membrane interfaces between different genomes that are critical for growth and yield (nitrogen fixation and seed loading), which require cell-signalling pathways to control nutrient exchange. The membranes of these interfaces contain specialised proteins that form multifunctional channels through which water, uncharged molecules and electrolytes move. These channels are likely to be ....Multifunctional channels as key components of biotrophic interfaces in legumes. In legumes there are two types of membrane interfaces between different genomes that are critical for growth and yield (nitrogen fixation and seed loading), which require cell-signalling pathways to control nutrient exchange. The membranes of these interfaces contain specialised proteins that form multifunctional channels through which water, uncharged molecules and electrolytes move. These channels are likely to be responsible for supporting the bulk of transported nutrients and in controlling their exchange. We aim to discover how these channels function in nitrogen fixation and seed loading with a view to developing new technologies that may enhance crop productivity.Read moreRead less
Understanding the molecular mechanism of force generation in the bacterial flagellar motor. The proposed research will advance the knowledge about how the bacterial flagellar motor works, enabling scientists to learn more about nature's blueprint of a nanoscale engine. It will address the fundamental question of how bacterial cells convert electrochemical energy into mechanical energy of rotation. At present, the smallest artificial electric motor is still on a micro-, rather than nanoscale. Nan ....Understanding the molecular mechanism of force generation in the bacterial flagellar motor. The proposed research will advance the knowledge about how the bacterial flagellar motor works, enabling scientists to learn more about nature's blueprint of a nanoscale engine. It will address the fundamental question of how bacterial cells convert electrochemical energy into mechanical energy of rotation. At present, the smallest artificial electric motor is still on a micro-, rather than nanoscale. Nanotechnology would therefore benefit from this work by basing their designs on the principles behind the mechanism of the bacterial motor. This research is also of interest for veterinary science, as motility by flagellar motor is a key virulence factor of common animal pathogens associated with, for example, listeriosis and gastroenteritis.Read moreRead less
Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production ....Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production and the structure/function of the solar powerhouse of plants (chloroplasts), and addresses fundamental questions at the interface of biology and physics. The research explores chloroplasts as a manifestation of the all-pervading Second Law of Thermodynamics, advancing Australia's contribution to basic science and helping to train researchers.Read moreRead less