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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.
Molecular interactions in cell membranes. Cell membranes are a complex composite of proteins and lipids and we have only a rough idea about how they perform their many functions. Together with Leica Microsystems, this project will develop a new microscope that can map the molecular interactions within the membrane revealing details that have never been seen before.
Development Of Membrane Protein Structural Biology In Australia
Funder
National Health and Medical Research Council
Funding Amount
$601,484.00
Summary
Membrane proteins are key components of all living organisms, constituting more than 30% of cellular proteins and representing more than 50% of all drug targets. Despite their medical importance our knowledge of membrane proteins is still extremely limited and requires further technological advances. This work will firmly establish membrane protein crystallography in Australia and provide a basis for training of new researchers in this important field.
Discovery Early Career Researcher Award - Grant ID: DE150101777
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Understanding the role of exosomes in intercellular communication. Exosomes, small packages released by cells, are powerful signalling organelles that can activate neighbouring cells by transferring proteins and RNA. Currently, it is unknown whether exosomes have similar membrane protein/lipid composition to that of the host cell. This project aims to explore the similarities and differences between the exosomal and host cell membranes in terms of the protein/lipid composition. In addition, the ....Understanding the role of exosomes in intercellular communication. Exosomes, small packages released by cells, are powerful signalling organelles that can activate neighbouring cells by transferring proteins and RNA. Currently, it is unknown whether exosomes have similar membrane protein/lipid composition to that of the host cell. This project aims to explore the similarities and differences between the exosomal and host cell membranes in terms of the protein/lipid composition. In addition, the project aims to study how the proteins and RNA are packaged into exosomes. Membrane molecules that are detected only in the exosomes may have important signalling implications and may aid in the uptake/fusion of exosomes by/with target cells. The project aims to improve our understanding on signalling mediated by exosomes.Read moreRead less
Deciphering Signalling Pathways Regulating Iron Homeostasis
Funder
National Health and Medical Research Council
Funding Amount
$407,402.00
Summary
Iron overload and anaemia are two of the most significant health problems affecting humans. Understanding how the body regulates iron levels is key to our understanding of these disorders and to the future development of new therapies. This research is aimed at understanding how a hormone produced in the liver called hepcidin that maintains iron balance is regulated. This research may lead to novel therapies aimed at correcting the iron balance in conditions of iron overload or anaemia.
Discovery Early Career Researcher Award - Grant ID: DE180100524
Funder
Australian Research Council
Funding Amount
$365,057.00
Summary
Manipulating selected inflammatory responses in macrophages. This project aims to define the structural and functional interactions of a new transmembrane adaptor SCIMP. SCIMP has recently been shown to effect the inflammatory pathway. The project outcomes will include the first structure of this unconventional complex. The project will have significant flow on benefits including new knowledge and new protein methodologies for end-users in research and industry, and ultimately economic impact.
Novel mechanisms of early growth response-1 activation through the epidermal growth factor receptor. This project will expand our knowledge of how cytokines and growth factors switch on signalling pathways from the cell surface to the nucleus. Unique antibodies will characterise regulatory routes, state-of-the-art microscopy will define dynamic patterns of receptor co-assembly, and in vivo studies will show receptor crosstalk in animal models.
Tuning the activating stimulus of voltage-gated sodium channels. This proposal aims to advance fundamental knowledge about how proteins (ion channels) found on the surface of neurons (brain cells and nerves) function as molecular conduits of cell-to-cell electrical communication. We aim to study how molecular probes and structural parts of these proteins affect the local chemical environment of ion channels, and how this leads to fine tuning of the ion channel's sensitivity to the stimulus that ....Tuning the activating stimulus of voltage-gated sodium channels. This proposal aims to advance fundamental knowledge about how proteins (ion channels) found on the surface of neurons (brain cells and nerves) function as molecular conduits of cell-to-cell electrical communication. We aim to study how molecular probes and structural parts of these proteins affect the local chemical environment of ion channels, and how this leads to fine tuning of the ion channel's sensitivity to the stimulus that activates them (cell membrane voltage).
The conceptual knowledge gained from this project would advance our understanding of a fundamental physiological process and facilitate the development of drugs that regulate ion channel function, such as anti-epileptics, analgesics and insecticides.Read moreRead less
Characterisation of membrane protein ubiquitination by MARCH ligases. The goal of the project is to understand how a family of enzymes called MARCHs regulate expression and localisation of immunoregulatory receptors within cells by post-translational addition of a small protein tag called Ubiquitin. The aims are to decipher the ubiquitination patterns produced by the MARCHs; identify the E2 ligases used by the MARCHs to produce distinct Ub codes; and apply a new proteomic pipeline to identify no ....Characterisation of membrane protein ubiquitination by MARCH ligases. The goal of the project is to understand how a family of enzymes called MARCHs regulate expression and localisation of immunoregulatory receptors within cells by post-translational addition of a small protein tag called Ubiquitin. The aims are to decipher the ubiquitination patterns produced by the MARCHs; identify the E2 ligases used by the MARCHs to produce distinct Ub codes; and apply a new proteomic pipeline to identify novel representative MARCH substrates in mice deficient in six different MARCHs. It is anticipated the project will reveal novel insights into a fundamental cell biological process of major significance for regulation of protein expression and trafficking in cells of the immune system.Read moreRead less