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Inhibiting pathological signalling in haematopoietic disease. Certain leukaemias and other blood diseases are caused by the mutation of one particular molecule, called Janus Kinase (JAK), inside our bodies. This project aims to understand the biochemical details of these diseases by studying this mutated molecule in detail. The project will aim to provide the information for developing effective therapeutics against these diseases.
Chemical inhibition: a new approach to investigate the role of a key protease, CtHtrA, from Chlamydia trachomatis. Infertility in women frequently results from infection with Chlamydia trachomatis. This project will develop an inhibitor compound against a important protein from this bacteria. This will establish a new scientific approach to study Chlamydia trachomatis. This project will also contribute to the development of new treatments for infertility.
An Integrated Approach Towards Development of Highly Specific Chemotherapeutics. Many diseases are caused or can be treated by modifying the activities of particular enzymes. Molecules that affect enzymatic activities have potential as therapeutic agents. A successful approach to the discovery of new drug molecules is to design them based on very detailed knowledge of how the target enzyme works. In this project, a highly motivated team of scientists will use state of the art instruments and the ....An Integrated Approach Towards Development of Highly Specific Chemotherapeutics. Many diseases are caused or can be treated by modifying the activities of particular enzymes. Molecules that affect enzymatic activities have potential as therapeutic agents. A successful approach to the discovery of new drug molecules is to design them based on very detailed knowledge of how the target enzyme works. In this project, a highly motivated team of scientists will use state of the art instruments and their combined creativity to understand the intimate details of how one large group of enzymes work. The enzymes selected are the bimetallic hydrolases, many of which are associated with disorders including osteoporosis, mental illnesses, cystic fibrosis and various types of cancer.Read moreRead less
Guarding and evolving the genome: interactions between DNA-repair enzymes and damaged DNA. The application of structural biology techniques to the area of DNA repair allows us to understand the full implications linking genes and proteins to the molecular mechanisms of diseases such as cancer and hereditory conditions. Studies in this highly internationally competitive area are already established in the Bond laboratory, which has recently relocated to Australia. The use of forward-thinking stru ....Guarding and evolving the genome: interactions between DNA-repair enzymes and damaged DNA. The application of structural biology techniques to the area of DNA repair allows us to understand the full implications linking genes and proteins to the molecular mechanisms of diseases such as cancer and hereditory conditions. Studies in this highly internationally competitive area are already established in the Bond laboratory, which has recently relocated to Australia. The use of forward-thinking structural biology approaches to solve difficult technical problems will foster collaborations within Australia and with leading laboratories abroad, providing excellent up-to-date research training for students and postdoctoral researchers.
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Hierarchical Phosphorylation of Tyrosine Hydroxylase is Dependent on the Activation Sequence of Signaling Pathways. Protein phosphorylation is a fundamental process in biology. It controls protein expression and function in all cells. Hierarchical phosphorylation is defined as the phosphorylation of a protein at one site leading to an altered phosphorylation at another site on the same protein and an altered biological outcome. We have discovered that the enzyme tyrosine hydroxylase undergoes a ....Hierarchical Phosphorylation of Tyrosine Hydroxylase is Dependent on the Activation Sequence of Signaling Pathways. Protein phosphorylation is a fundamental process in biology. It controls protein expression and function in all cells. Hierarchical phosphorylation is defined as the phosphorylation of a protein at one site leading to an altered phosphorylation at another site on the same protein and an altered biological outcome. We have discovered that the enzyme tyrosine hydroxylase undergoes a form of hierarchical phosphorylation not previously reported. Here we examine hierarchical phosphorylation in rat and human tyrosine hydroxylase and its functional consequence in intact cells. The approaches and methods developed will also be applicable to investigation of hierarchical phosphorylation in other proteins.Read moreRead less
Characterisation of the oxygen-sensing asparaginyl hydroxylase, FIH-1, and hydroxylase-specific antagonists. This research will provide fundamental information on how cells and whole organisms can sense and respond accordingly to oxygen deficiency. This information is fundamental for our understanding of embryo development and adult life in different environments, and central to the diagnosis and treatment of diseases such as stroke, cardiovascular disease, and cancer. This research will contrib ....Characterisation of the oxygen-sensing asparaginyl hydroxylase, FIH-1, and hydroxylase-specific antagonists. This research will provide fundamental information on how cells and whole organisms can sense and respond accordingly to oxygen deficiency. This information is fundamental for our understanding of embryo development and adult life in different environments, and central to the diagnosis and treatment of diseases such as stroke, cardiovascular disease, and cancer. This research will contribute to our basic knowledge of these processes, provide invaluable information about the specific genes and proteins involved, and provide direct information about the therapeutic potential of specific drugs or inhibitors designed to target this oxygen response in human disease.Read moreRead less
Function and regulation of the Na+,K+-ATPase. The Na+,K+-ATPase is the major energy-consuming enzyme of animal cells. Its ion pumping is essential for numerous physiological functions (e.g. heart, kidney, brain). Molecular detail of its pumping mechanism is, however, lacking and its regulation is still unclear. We will use rapid reaction methods on purified enzyme in vitro to locate the rate-determining step of the enzyme cycle, determine its mechanism, investigate its regulation by sodium conce ....Function and regulation of the Na+,K+-ATPase. The Na+,K+-ATPase is the major energy-consuming enzyme of animal cells. Its ion pumping is essential for numerous physiological functions (e.g. heart, kidney, brain). Molecular detail of its pumping mechanism is, however, lacking and its regulation is still unclear. We will use rapid reaction methods on purified enzyme in vitro to locate the rate-determining step of the enzyme cycle, determine its mechanism, investigate its regulation by sodium concentration, phosphorylation and membrane composition, and isolate its charge-transporting steps. The results will have immediate impact on the understanding of the enzyme's mechanism, its metabolic control and its role in disease.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
The control of elongation factor 2 and its role in the regulation of protein synthesis. Protein synthesis is a key process in living cells. The main stage, elongation, is regulated through phosphorylation of elongation factor eEF2 in response to hormones, amino acids and cellular energy status, via changes in the activity of eEF2 kinase. We will study how these conditions control eEF2 kinase by studying its phosphorylation and identifying new kinases that regulate it. We will explore the role of ....The control of elongation factor 2 and its role in the regulation of protein synthesis. Protein synthesis is a key process in living cells. The main stage, elongation, is regulated through phosphorylation of elongation factor eEF2 in response to hormones, amino acids and cellular energy status, via changes in the activity of eEF2 kinase. We will study how these conditions control eEF2 kinase by studying its phosphorylation and identifying new kinases that regulate it. We will explore the role of eEF2 in controlling protein synthesis, seek new substrates for eEF2 kinase and initiate work to elucidate the structure of this unusual enzyme. This will enhance, in a range of ways, fundamental understanding of cell physiology.Read moreRead less
A new Src, PKCdelta and Akt regulated protease activated receptor system in metastasis. In contrast with localised cancer which can often be cured, curative treatment is generally not possible for cancer that has spread. This project will characterise a protein that drives the spread of cancer and to develop new approaches to treat patients at risk of developing these aggressive tumours that spread to other organs.