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
Realistic models of permeation in ion channels. Ion channels are formed by proteins in cell membranes and provide pathways for fast and controlled flow of selected ions. This activity generates action potentials in nerves and muscles that forms the basis of all movement, sensation and thought processes. Recent determination of the crystal structure of channel proteins has enabled construction of models that can relate channel function to its structure--necessary for understanding their operati ....Realistic models of permeation in ion channels. Ion channels are formed by proteins in cell membranes and provide pathways for fast and controlled flow of selected ions. This activity generates action potentials in nerves and muscles that forms the basis of all movement, sensation and thought processes. Recent determination of the crystal structure of channel proteins has enabled construction of models that can relate channel function to its structure--necessary for understanding their operation and seeking cures for diseases caused by their malfunction. This project aims to develop accurate ion-protein-water interactions for permeation models based on stochastic and molecular dynamics simulations using both classical and quantum mechanical methods.Read moreRead less
Intermolecular interactions revisited-Flaws in the fabric and applications to lower-dimensional structures. This project aims to capitalise on recent developments, that have shown that previously accepted theories are deeply flawed, in various applications in fundamental physics and in unsolved problems in biology that involve electromagnetic fields. Interactions driven
by electromagnetic fluctuation forces, and real photon exchange, between molecules will be investigated. The project will inv ....Intermolecular interactions revisited-Flaws in the fabric and applications to lower-dimensional structures. This project aims to capitalise on recent developments, that have shown that previously accepted theories are deeply flawed, in various applications in fundamental physics and in unsolved problems in biology that involve electromagnetic fields. Interactions driven
by electromagnetic fluctuation forces, and real photon exchange, between molecules will be investigated. The project will investigate how dispersion interactions change in mesoscopic pores, in electrolytes, and at finite temperatures. Applications involve
catalysis, molecular formation, and quantum logic. The project also aims to develop a unified theory for energy and charge transfer, relevant for photosynthesis and the way biological molecules transfer information.Read moreRead less
Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production ....Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production and the structure/function of the solar powerhouse of plants (chloroplasts), and addresses fundamental questions at the interface of biology and physics. The research explores chloroplasts as a manifestation of the all-pervading Second Law of Thermodynamics, advancing Australia's contribution to basic science and helping to train researchers.Read moreRead less
Special Research Initiatives - Grant ID: SR0354494
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
BRAINnet:
Brain Research And Integrative Neuroscience Network. The brain is the ultimate frontier of science, and its complexity requires an integrative approach to neuroscience. This initiative will facilitate a unique integration of disciplines (biological, physical, computational) and scales of focus (single neurons to networks to whole-brain), within a high profile Network of Australian and international players. The Network will be harnessed by a centralized hub for sharing of data and tec ....BRAINnet:
Brain Research And Integrative Neuroscience Network. The brain is the ultimate frontier of science, and its complexity requires an integrative approach to neuroscience. This initiative will facilitate a unique integration of disciplines (biological, physical, computational) and scales of focus (single neurons to networks to whole-brain), within a high profile Network of Australian and international players. The Network will be harnessed by a centralized hub for sharing of data and techniques, and mentoring of early career researchers. The principal socio-economic and discovery outcomes will flow from the exceptionally strong foundations in fundamental and applied science, established collaboration, and demonstrated capacity for development and commercialization of frontier biotechnologies.Read moreRead less
From structures to systems: A hierachical approach to understanding sub-cellular components. This program will dramatically extend the range of biomolecular systems that can be modelled with near atomistic precision. It will provide a better understanding of the structure and function of proteins involved in the regulation of membrane fusion and fission as well as shedding light on the assembly of large-scale protein-protein and protein-membrane complexes in general. The work will help place Au ....From structures to systems: A hierachical approach to understanding sub-cellular components. This program will dramatically extend the range of biomolecular systems that can be modelled with near atomistic precision. It will provide a better understanding of the structure and function of proteins involved in the regulation of membrane fusion and fission as well as shedding light on the assembly of large-scale protein-protein and protein-membrane complexes in general. The work will help place Australia at the forefront of developing simulation techniques in biomolecular systems, which are widely used within the chemical and pharmaceutical industries for modelling processes ranging from protein-drug interactions to the phase behaviour of lipids and surfactants. Read moreRead less
A New Window on Photosynthesis: Ultrafast Coherence Dynamics in Biomolecules and Semiconductor Nanostructures. Recent research has indicated that the remarkable efficiency of energy capture and transfer in photosynthesis may be due to the effects of quantum coherence, which is an intrinsically non-classical phenomenon. We will investigate these effects in biological and nanofabricated systems using ultrafast laser spectroscopy . An understanding of these energy transfer processes may open the d ....A New Window on Photosynthesis: Ultrafast Coherence Dynamics in Biomolecules and Semiconductor Nanostructures. Recent research has indicated that the remarkable efficiency of energy capture and transfer in photosynthesis may be due to the effects of quantum coherence, which is an intrinsically non-classical phenomenon. We will investigate these effects in biological and nanofabricated systems using ultrafast laser spectroscopy . An understanding of these energy transfer processes may open the door to the development to a range of new technologies, including clean and virtually limitless energy sources that convert solar energy directly into useful power and quantum computers that will revolutionize our ability to process information.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
Photoactive Semiconducting Biopolymers. The basic aims of this project are to elucidate, manipulate, and utilise the unique chemical and physical properties of a class of biopolymers called the melanins. These materials are the only known solid state semiconducting biopolymers, and are non-toxic, biocompatible, and biodegradable. Their use as active components in biomimetic soft electonic, optoelectronic or photovoltaic devices, has not hitherto been demonstrated. It is anticipated that the k ....Photoactive Semiconducting Biopolymers. The basic aims of this project are to elucidate, manipulate, and utilise the unique chemical and physical properties of a class of biopolymers called the melanins. These materials are the only known solid state semiconducting biopolymers, and are non-toxic, biocompatible, and biodegradable. Their use as active components in biomimetic soft electonic, optoelectronic or photovoltaic devices, has not hitherto been demonstrated. It is anticipated that the key outcomes from the project will be a demonstration of biopolymer-based photoelectrochemical and solid-state p-i-n solar cells, and an improved understanding of the physics and chemistry of these important biological macromolecules.Read moreRead less
Parametric Brain Imaging via Modeling and Analysis of Electroencephalographic Signals. Parameters of brain function and physiology will be spatially imaged with high time resolution via their effects on electroencephalographic (EEG) signals, a form of imaging that is impossible with existing methods. This will be achieved by improving existing physiologically-based models of the generation of EEGs and developing analysis tools based on fitting of model predictions to multielectrode EEG data. T ....Parametric Brain Imaging via Modeling and Analysis of Electroencephalographic Signals. Parameters of brain function and physiology will be spatially imaged with high time resolution via their effects on electroencephalographic (EEG) signals, a form of imaging that is impossible with existing methods. This will be achieved by improving existing physiologically-based models of the generation of EEGs and developing analysis tools based on fitting of model predictions to multielectrode EEG data. The results will be used to probe spatiotemporal features of EEGs in normal subjects to explore the underlying fundamental mechanisms and to infer novel parameter variations of practical relevance.Read moreRead less