Dynamic Force Microscopy of small molecular assemblies. The possibility of manipulating a single molecule seems at first unreal, indeed 5 years ago it was pure science fiction. Through the gaining popularity of the Atomic Force Microscope (AFM) many perspectives about the molecular world are changing. Macroscopic effects such as adhesion and lubrication are now discussed in light of measurements made with this instrument. Newer work includes the observation of single protein unfolding experim ....Dynamic Force Microscopy of small molecular assemblies. The possibility of manipulating a single molecule seems at first unreal, indeed 5 years ago it was pure science fiction. Through the gaining popularity of the Atomic Force Microscope (AFM) many perspectives about the molecular world are changing. Macroscopic effects such as adhesion and lubrication are now discussed in light of measurements made with this instrument. Newer work includes the observation of single protein unfolding experiments. The biophysics oriented project detailed in this application will extend the AFM: into multi-molecular systems formed by self-assembly, such as cell membranes; into polyelectrolyte-surface interactions; and, finally into the sequencing of DNA.Read moreRead less
In-situ Scanning Probe Microscopy of biological redox processes: nanoscale structure and morphology. The science behind this project underpins the development of nanobiotechnology. Immediate applications foreseen, are the development of biosensors and diagnostic devices based on our intimate knowledge of the nature of the protein attachment to a surface. Use of synthetic membranes to create biomimetic surfaces will impact significantly on our understanding of the role and contribution membranes ....In-situ Scanning Probe Microscopy of biological redox processes: nanoscale structure and morphology. The science behind this project underpins the development of nanobiotechnology. Immediate applications foreseen, are the development of biosensors and diagnostic devices based on our intimate knowledge of the nature of the protein attachment to a surface. Use of synthetic membranes to create biomimetic surfaces will impact significantly on our understanding of the role and contribution membranes have on protein structure, function hence disease.Read moreRead less
Ionic Dispersion Forces in Physical Chemistry: Implications for pH, Electrochemistry, Nanoparticle Formation and Organic Synthesis. Our current understanding of charged systems in solution is deeply flawed . Existing theories are not predictive, mainly because they concentrate entirely on electrostatics. This proposal aims to partially rectify this by including the effects of previously neglected dispersion forces in a number of problems. These forces are responsible for much of the behaviou ....Ionic Dispersion Forces in Physical Chemistry: Implications for pH, Electrochemistry, Nanoparticle Formation and Organic Synthesis. Our current understanding of charged systems in solution is deeply flawed . Existing theories are not predictive, mainly because they concentrate entirely on electrostatics. This proposal aims to partially rectify this by including the effects of previously neglected dispersion forces in a number of problems. These forces are responsible for much of the behaviour seen in the following systems: the theory of electrolytes; electrochemistry pH and buffers; self energy effects in organic chemistry; and zeolite and nano-particle synthesis. The main outcome will be accurate and predictive theories for these systems.Read moreRead less
Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the ....Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the condition to fabricate biological devices such as immune sensors.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
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775708
Funder
Australian Research Council
Funding Amount
$289,680.00
Summary
X-ray Diffraction Microscope. The results of the research will substantially expand Australia's knowledge base in the area of diffraction, imaging and structural biology. It will build up our expertise in x-ray optics and synchrotron technology, and will open up a new approach to x-ray imaging and structure determination.
This will revolutionize our understanding of cellular and sub-cellular organisation with implications for the treatment of disease while the ability to determine structures ....X-ray Diffraction Microscope. The results of the research will substantially expand Australia's knowledge base in the area of diffraction, imaging and structural biology. It will build up our expertise in x-ray optics and synchrotron technology, and will open up a new approach to x-ray imaging and structure determination.
This will revolutionize our understanding of cellular and sub-cellular organisation with implications for the treatment of disease while the ability to determine structures of membrane proteins will open the door to fresh opportunities in rational drug design and biotechnology that will promote innovation in this industry, and the likely foundation of new start-up companies.Read moreRead less
Functional Dissection of the Bacterial Replisome. We now have the complete sequences of genes in humans and many other organisms, but we know much less about how the protein products of the genes communicate with each other to create and grow cells. Australia has recently invested heavily in state-of-the-art instruments that can be used to tackle these problems. This project will involve close interaction of four laboratories to use new instruments to determine how a large assembly of proteins i ....Functional Dissection of the Bacterial Replisome. We now have the complete sequences of genes in humans and many other organisms, but we know much less about how the protein products of the genes communicate with each other to create and grow cells. Australia has recently invested heavily in state-of-the-art instruments that can be used to tackle these problems. This project will involve close interaction of four laboratories to use new instruments to determine how a large assembly of proteins interact in a biological machine that makes DNA. This process occurs in similar ways in all organisms, and is essential for life. Understanding how DNA is made will help scientists to develop new antibacterial drugs, and learn how to make practical use of molecular machines that imitate biology.Read moreRead less
Nuclear magnetic resonance (NMR) studies of complex cellular responses: isotopomer sub-spaces, 'lost' ATP and 'tunable' anisotropy. Red blood cells (RBCs) transport oxygen around the body but they have other roles that are mediated by complex interconnecting metabolic pathways that generate myriad metabolites including ATP. A longstanding conundrum is the inability to account for ~60% of ATP turnover in human RBCs. Processes that may consume this 'lost' ATP, include autonomous motion of the cel ....Nuclear magnetic resonance (NMR) studies of complex cellular responses: isotopomer sub-spaces, 'lost' ATP and 'tunable' anisotropy. Red blood cells (RBCs) transport oxygen around the body but they have other roles that are mediated by complex interconnecting metabolic pathways that generate myriad metabolites including ATP. A longstanding conundrum is the inability to account for ~60% of ATP turnover in human RBCs. Processes that may consume this 'lost' ATP, include autonomous motion of the cell membrane called 'flickering', and maintenance of the biconcave-disc shape. NMR spectroscopy of quadrupolar nuclei in chiral aligned media, and isotopomer analysis will be used to define the kinetics of metabolism and membrane processes and thus help define the molecular basis of major blood disorders. Read moreRead less
NMR Spectroscopy of Complex Cellular Processes. The Theme is the cell viewed as a complex regulated molecular assembly. The Aim is to establish an integrated mathematical model of red cell metabolism, membrane transport, shape, and mechanical properties, principally by using NMR spectroscopy. The Significance will be discovery of new aspects of cellular structure and function, and new NMR theory for molecular bioscience. Outcomes will include new NMR measurements of kinetics of metabolic reactio ....NMR Spectroscopy of Complex Cellular Processes. The Theme is the cell viewed as a complex regulated molecular assembly. The Aim is to establish an integrated mathematical model of red cell metabolism, membrane transport, shape, and mechanical properties, principally by using NMR spectroscopy. The Significance will be discovery of new aspects of cellular structure and function, and new NMR theory for molecular bioscience. Outcomes will include new NMR measurements of kinetics of metabolic reactions, rates of membrane transport, solute diffusion, and functions of key membrane- and cytoskeletal proteins. Practical applications will include strategies for modelling complex biochemical systems, and circumventing metabolic defects arising from inheritance, the environment, and therapies.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0882382
Funder
Australian Research Council
Funding Amount
$245,000.00
Summary
Biophysical Characterisation Facility. The protein analysis facility will have substantial benefits for basic science and biotechnology. It will create capacity for South Australian researchers to study proteins at the biophysical level. The facility will support research projects within the designated national research priority areas of 'Frontier technologies for building and transforming Australian industries' and 'Promoting and maintaining good health