Special Research Initiatives - Grant ID: SR0354751
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
Australian Bio-Metals Research Network. The aim of the Bio-Metals Research Network is to connect the extensive Australian expertise in the study of metal ions in relation to the Environment, Health and Frontier Technologies. The Network is inter-disciplinary and brings together over 50 group leaders in the biological, biomedical and physical sciences. A major aim of the Network will be to provide a molecular understanding of biological and environmental processes and disease states as well as pr ....Australian Bio-Metals Research Network. The aim of the Bio-Metals Research Network is to connect the extensive Australian expertise in the study of metal ions in relation to the Environment, Health and Frontier Technologies. The Network is inter-disciplinary and brings together over 50 group leaders in the biological, biomedical and physical sciences. A major aim of the Network will be to provide a molecular understanding of biological and environmental processes and disease states as well as providing new materials for the development of new technologies. The Network will interact in research and education with Bio-Metals groups around the world and will develop collaborative funding proposalsRead moreRead less
Electrochemically Driven Molybdoenzyme Catalysis. Enzymes that catalyse oxidation and reduction reactions need to exchange electrons with their substrate and this supply of electrons needs to be sustained. Artificially reconstituted systems can be developed where the enzyme is coupled with an electrode and the current (electrons) exchanged during the reaction are measured directly. In this project we will reveal whether some unusual and unexplained electrochemical phenomena seen before are relat ....Electrochemically Driven Molybdoenzyme Catalysis. Enzymes that catalyse oxidation and reduction reactions need to exchange electrons with their substrate and this supply of electrons needs to be sustained. Artificially reconstituted systems can be developed where the enzyme is coupled with an electrode and the current (electrons) exchanged during the reaction are measured directly. In this project we will reveal whether some unusual and unexplained electrochemical phenomena seen before are related to the properties of the enzymes themselves or the ways in which their experiments have been conducted.Read moreRead less
Mechanistic Studies of Dimethylsulfide Dehydrogenase: A Novel Bacterial Molybdoenzyme. The aim of this proposal is to use electrochemical, spectroscopic and molecular biological techniques to understand the mechanism of action of the enzyme dimethylsulfide dehydrogenase. This enzyme is representative of an major group of molybdenum-containing enzymes that have importance in microbial biotransformations. The project will provide fundamental information about a multi-redox centre protein that has ....Mechanistic Studies of Dimethylsulfide Dehydrogenase: A Novel Bacterial Molybdoenzyme. The aim of this proposal is to use electrochemical, spectroscopic and molecular biological techniques to understand the mechanism of action of the enzyme dimethylsulfide dehydrogenase. This enzyme is representative of an major group of molybdenum-containing enzymes that have importance in microbial biotransformations. The project will provide fundamental information about a multi-redox centre protein that has potential application in biosensors and biocatalysis.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0344441
Funder
Australian Research Council
Funding Amount
$390,000.00
Summary
New Generation Metalloenzyme Magnetic Circular Dichroism Spectrometer Systems. Funding is sought to enhance the existing collaborations between UQ, ANU, Sydney and other universities in the study of metal-centred molecules of biological interest through the construction of advanced magnetic circular dichroism (MCD) spectrometers. These facilities will be the best instruments of their kind, and will enable researchers at Australian institutions to enhance the quality of their research and remain ....New Generation Metalloenzyme Magnetic Circular Dichroism Spectrometer Systems. Funding is sought to enhance the existing collaborations between UQ, ANU, Sydney and other universities in the study of metal-centred molecules of biological interest through the construction of advanced magnetic circular dichroism (MCD) spectrometers. These facilities will be the best instruments of their kind, and will enable researchers at Australian institutions to enhance the quality of their research and remain internationally competitive through the application of modern MCD spectroscopic techniques to the study of metal-centred biomolecules. These facilities will drive a number of programs in the area of metalloenzyme and photosystem II research.Read moreRead less
High Resolution EPR Spectroscopy - A Tool for Determining Electronic and Geometric Structure of Metalloenzymes. High resolution orientation selective pulsed EPR and END(T)OR in conjunction with computer simulation (XSophe) and computational chemistry will allow the determination of the electronic and geometric structure (distance and orientation of nuclei surrounding the metal ion(s)) of multiple redox centres in DMSOR, DorC and DMSDH to be determined. In addition pulsed ELDOR in conjunction wi ....High Resolution EPR Spectroscopy - A Tool for Determining Electronic and Geometric Structure of Metalloenzymes. High resolution orientation selective pulsed EPR and END(T)OR in conjunction with computer simulation (XSophe) and computational chemistry will allow the determination of the electronic and geometric structure (distance and orientation of nuclei surrounding the metal ion(s)) of multiple redox centres in DMSOR, DorC and DMSDH to be determined. In addition pulsed ELDOR in conjunction with molecular modelling will enable the mapping (distance and orientation) of redox centres in complex multicentered metalloproteins (DMSDH and DorC) and in protein-protein complexes (DMSOR-DorC) providing information on the pathway of electron transfer and hence the role of the pyranopterins.Read moreRead less
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
Metal Clips for Folding Peptides. Large protein molecules fold into shapes that are important for their function. These shapes are defined by secondary structures stabilised by hydrogen bonds, packing effects, and sometimes also by the binding of metal ions. Smaller peptides corresponding to these secondary structures tend to adopt only random structures in solution, away from the stabilising environment of the protein. In this project metal ions are used to clip together components of small pe ....Metal Clips for Folding Peptides. Large protein molecules fold into shapes that are important for their function. These shapes are defined by secondary structures stabilised by hydrogen bonds, packing effects, and sometimes also by the binding of metal ions. Smaller peptides corresponding to these secondary structures tend to adopt only random structures in solution, away from the stabilising environment of the protein. In this project metal ions are used to clip together components of small peptides, thereby stabilising secondary structures (alpha helices) identical to those adopted by proteins. Small peptides so constrained may reproduce some properties of proteins, such as interactions with biological receptors.Read moreRead less
Gold-based mitochondria targeted chemotherapeutics: mechanistic studies probing interactions with thiol and selenol containing proteins. Cancer affects one in four Australians and prostate cancer is the most commonly diagnosed and second leading cause of male cancer deaths, for which there is currently no effective treatment. Current chemotherapeutics must overcome drug resistance and lack of selectivity between tumour and normal cells. To circumvent these problems we are investigating gold-base ....Gold-based mitochondria targeted chemotherapeutics: mechanistic studies probing interactions with thiol and selenol containing proteins. Cancer affects one in four Australians and prostate cancer is the most commonly diagnosed and second leading cause of male cancer deaths, for which there is currently no effective treatment. Current chemotherapeutics must overcome drug resistance and lack of selectivity between tumour and normal cells. To circumvent these problems we are investigating gold-based compounds, which act by a novel mechanism. The research will lead to new strategies in the design of improved anticancer drugs, an important Australian research priority that will promote and maintain good health. Other benefits arise from training PhD students with interdisciplinary skills for Australian biotechnology industries.Read moreRead less
Studies of Group 15 complexes of the Lanthanoids and Group 2 metals-An unexploited field of research. The project will initially explore new amido chemisty of the lanthanoids. This chemistry will develop towards complexes with lanthanoid-or Group 2-phosphorus, -arsenic, -antimony or -bismuth connectivities. This chemistry is surprisingly underdeveloped given the wealth of applications found for oxo and amido complexes of the same metals. Structural studies involving the complexes using cutting e ....Studies of Group 15 complexes of the Lanthanoids and Group 2 metals-An unexploited field of research. The project will initially explore new amido chemisty of the lanthanoids. This chemistry will develop towards complexes with lanthanoid-or Group 2-phosphorus, -arsenic, -antimony or -bismuth connectivities. This chemistry is surprisingly underdeveloped given the wealth of applications found for oxo and amido complexes of the same metals. Structural studies involving the complexes using cutting edge ligands will reveal interesting coordination modes. The discovery of new reaction pathways will be of interest to the wider chemical community. The chemical reactivity and potential catalytic or luminescent properties of these compounds will be studied and will result in publications in international journals.Read moreRead less
New Synthetic Routes to the Immobilisation of Mixed Valence Transition Metal Complexes on Conducting Metal Oxides. Highly coloured, electrochemically active transition metal dyes may find application electrochromic devices, where they may switch between contrasting coloured forms through a simple redox reaction. A prerequisite is that the dye be immobilised onto a solid conducting support whilst preserving the electrochemical and optical properties of the dye found in solution. This project tack ....New Synthetic Routes to the Immobilisation of Mixed Valence Transition Metal Complexes on Conducting Metal Oxides. Highly coloured, electrochemically active transition metal dyes may find application electrochromic devices, where they may switch between contrasting coloured forms through a simple redox reaction. A prerequisite is that the dye be immobilised onto a solid conducting support whilst preserving the electrochemical and optical properties of the dye found in solution. This project tackles this problem through a combination of organic and inorganic synthesis to develop new electrochromic dyes that may be attached to mesoporous titania.Read moreRead less