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
Remodelling encapsulin nanocages to help enhance plant carbon fixation. Nature has evolved mechanisms in microbial systems to improve photosynthetic efficiency by saturating the enzyme Rubisco with carbon dioxide. These carbon concentrating mechanisms are genetically complex, precluding successful introduction into crops. Our simpler approach is to use encapsulins, a new source of robust bacterial pore-containing nanocages made from a single gene. This project will optimise the development of sy ....Remodelling encapsulin nanocages to help enhance plant carbon fixation. Nature has evolved mechanisms in microbial systems to improve photosynthetic efficiency by saturating the enzyme Rubisco with carbon dioxide. These carbon concentrating mechanisms are genetically complex, precluding successful introduction into crops. Our simpler approach is to use encapsulins, a new source of robust bacterial pore-containing nanocages made from a single gene. This project will optimise the development of synthetic encapsulin-Rubisco carbon-fixing nanoreactors and transform them into leaf chloroplasts to test their impact on plant photosynthesis and growth. Our genetically simpler solution will aid ongoing global efforts to deliver overdue step change improvements in agricultural productivity.Read moreRead less
Role of a novel zinc-binding motif in the structure-function of deubiquitinating enzymes. The ubiquitin pathway destroys many proteins that control cell function and growth, by attaching ubiquitin to them and marking them for degradation. Deubiquitinating enzymes (DUBs) regulate protein destruction by controlling the amount of ubiquitin attached. DUBs and the ubiquitin pathway can also be manipulated in biotechnology applications. However, very little is known about the structure/function of DUB ....Role of a novel zinc-binding motif in the structure-function of deubiquitinating enzymes. The ubiquitin pathway destroys many proteins that control cell function and growth, by attaching ubiquitin to them and marking them for degradation. Deubiquitinating enzymes (DUBs) regulate protein destruction by controlling the amount of ubiquitin attached. DUBs and the ubiquitin pathway can also be manipulated in biotechnology applications. However, very little is known about the structure/function of DUBs. We have identified a new zinc-binding motif in DUBs, and we will explore how this contributes to their structure, and interactions with other proteins. This will significantly enhance our knowledge of how DUBs function in both biotechnology and in controlling cell function.Read moreRead less
Conductance states of a brain glutamine transporter. Brain transporters are the target for many neuroactive drugs that are used to treat anxiety, depression and other psychotic disorders. Transport processes are also targeted to deliver neurotransmitter precursors to the brain to treat disorders such as Parkinson's disease. In this project we will study a transport process crucial for the function of neurons that release glutamate and GABA (gamma-aminobutyric acid) as neurotransmitters. The stud ....Conductance states of a brain glutamine transporter. Brain transporters are the target for many neuroactive drugs that are used to treat anxiety, depression and other psychotic disorders. Transport processes are also targeted to deliver neurotransmitter precursors to the brain to treat disorders such as Parkinson's disease. In this project we will study a transport process crucial for the function of neurons that release glutamate and GABA (gamma-aminobutyric acid) as neurotransmitters. The study of this transport process will be important for understanding disorders like epilepsy and other disorders affecting neuronal excitability.Read moreRead less
Protein degradation in mammals. One mechanism by which the regulation of protein turnover occurs is the balance between the activity of enzymes responsible for the ubiquitination and deubiquitination of target proteins. The majority of targets of this second family of enzymes are unknown. This project proposes a method for the identification of the targets of two specific mammalian deubiquitinating enzymes in order to understand their function and to begin to explore this new research field. ....Protein degradation in mammals. One mechanism by which the regulation of protein turnover occurs is the balance between the activity of enzymes responsible for the ubiquitination and deubiquitination of target proteins. The majority of targets of this second family of enzymes are unknown. This project proposes a method for the identification of the targets of two specific mammalian deubiquitinating enzymes in order to understand their function and to begin to explore this new research field. Knowledge about this new aspect of protein degradation could provide a powerful tool to test the effect of the stabilisation or removal of specific proteins in the cell and also to develop new technologies in protein production.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989077
Funder
Australian Research Council
Funding Amount
$225,600.00
Summary
Regional Facility for Real Time Analysis of Molecular Interactions. The ARC Facility for the Analysis of Biomacromolecular Interactions at the University of Wollongong and ANU serves many research groups working at the interface of chemistry and biology with the ultimate aim of drug target identification and drug development. New state-of-the-art instrumentation will enhance their capabilities and enable new activities. Specifically, the new instruments will facilitate characterization of macrom ....Regional Facility for Real Time Analysis of Molecular Interactions. The ARC Facility for the Analysis of Biomacromolecular Interactions at the University of Wollongong and ANU serves many research groups working at the interface of chemistry and biology with the ultimate aim of drug target identification and drug development. New state-of-the-art instrumentation will enhance their capabilities and enable new activities. Specifically, the new instruments will facilitate characterization of macromolecular complexes and enable rapid and precise study in real time of the rates at which molecules interact, under many different experimental conditions. It will strengthen existing collaborations among the partner institutions and provide essential infrastructure for drug development projects.Read moreRead less
Proteome mapping of the model fungal plant pathogen Stagonospora nodorum using LC-LC-MS/MS. Stagonospora nodorum is a fungus that causes leaf and glume blotch disease on wheat. This disease alone causes $55 million dollars in yield losses per annum in Australia. This project aims to identify the proteins produced by Stagonospora nodorum through the development of a new proteomics technique. Two clear benefits to the community resulting from this project will emerge. The first will be the expert ....Proteome mapping of the model fungal plant pathogen Stagonospora nodorum using LC-LC-MS/MS. Stagonospora nodorum is a fungus that causes leaf and glume blotch disease on wheat. This disease alone causes $55 million dollars in yield losses per annum in Australia. This project aims to identify the proteins produced by Stagonospora nodorum through the development of a new proteomics technique. Two clear benefits to the community resulting from this project will emerge. The first will be the expert training of a student in proteomics, a skill that is keenly sought. Secondly, the identification of these pathogen proteins will lead to new strategies to better control the disease and secure the supply of wheat.Read moreRead less
A unified model of amino acid homeostasis. This project aims to develop a unified model of amino acid homeostasis in mammalian cells and apply it to brain cells. The model will be underpinned by a mathematical algorithm that allows predicting amino acid levels in the cytosol based on fundamental parameters such as transport and metabolism. This project should provide the significant benefit of enabling the prediction of essential functions such as cell growth and survival.
Using the fractionation of hydrogen and carbon isotopes to analyse the mechanisms of the primary processes of photosynthesis. The primary processes of CO2 fixation and reduction in photosynthesis leave their signatures in the isotopic composition of organic matter. Although these signatures are used widely in geochemistry, biology and climatology to infer the dynamics and history of the biosphere, the information they provide about the mechanisms of the processes that produce them has not been e ....Using the fractionation of hydrogen and carbon isotopes to analyse the mechanisms of the primary processes of photosynthesis. The primary processes of CO2 fixation and reduction in photosynthesis leave their signatures in the isotopic composition of organic matter. Although these signatures are used widely in geochemistry, biology and climatology to infer the dynamics and history of the biosphere, the information they provide about the mechanisms of the processes that produce them has not been exploited fully. We propose to map the underlying biochemistry responsible for fractionation of hydrogen isotopes, to assess its ability to indicate the water relations of plants, and to use carbon-isotope discrimination to probe the catalytic chemistry of the CO2-fixing enzyme, Rubisco.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE240100068
Funder
Australian Research Council
Funding Amount
$931,950.00
Summary
Australian Advanced Metabolic Signal Discovery, and Imaging Platform. This proposal aims to establish an Australian Advanced Metabolic Signal Discovery and Imaging platform. The platform consists of an ultra-high resolution gas chromatography mass spectrometer and an imaging mass spectrometry upgrade for a second existing high resolution mass spectrometer. The facility will break barriers currently limiting discovery and localisation of metabolic changes during plant and animal development under ....Australian Advanced Metabolic Signal Discovery, and Imaging Platform. This proposal aims to establish an Australian Advanced Metabolic Signal Discovery and Imaging platform. The platform consists of an ultra-high resolution gas chromatography mass spectrometer and an imaging mass spectrometry upgrade for a second existing high resolution mass spectrometer. The facility will break barriers currently limiting discovery and localisation of metabolic changes during plant and animal development under environmental stress; integral chemical signals exchanged in host-microbe interactions; and volatile signatures linked to ecosystem health and developmental anomalies in animals. Results will inform innovative strategies to enhance biological adaptation, climate resilience and plant, animal, and ecosystem health.Read moreRead less