Novel link between bacterial sugar metabolism and cell-to-cell signalling. This project aims to understand the role and function of the bacterial communication system that enables bacteria to form complex communities and alter phenotypic traits, essential for survival in their environment. Bacteria survive in their environmental niches by developing complex multicellular communities. Cell to cell communication, termed quorum sensing (QS), is critical for this process and is linked to their capac ....Novel link between bacterial sugar metabolism and cell-to-cell signalling. This project aims to understand the role and function of the bacterial communication system that enables bacteria to form complex communities and alter phenotypic traits, essential for survival in their environment. Bacteria survive in their environmental niches by developing complex multicellular communities. Cell to cell communication, termed quorum sensing (QS), is critical for this process and is linked to their capacity to detect and secrete small signalling molecules, autoinducers. This project will provide a new paradigm in bacterial adaptation through comprehensive characterisation of the Autoinducer-2 QS system. This knowledge will provide future opportunities for intervention in microbial infestation with broad potential benefits.Read moreRead less
The role of central carbon metabolism in cell cycle control in bacteria. Bacteria are simple organisms, yet we still do not understand how they coordinate their growth with their reproduction so faithfully, generation after generation, to produce viable newborn cells. The new discovery of a link between the food bacteria eat and the first stage of their cell division now provides the opportunity to elucidate how bacteria 'measure' their energy production to control their proliferation. This proj ....The role of central carbon metabolism in cell cycle control in bacteria. Bacteria are simple organisms, yet we still do not understand how they coordinate their growth with their reproduction so faithfully, generation after generation, to produce viable newborn cells. The new discovery of a link between the food bacteria eat and the first stage of their cell division now provides the opportunity to elucidate how bacteria 'measure' their energy production to control their proliferation. This project combines the latest technology with complementary expertise in bacterial cell division and metabolism. This should identify the mechanism that integrates these fundamental pathways in bacteria, crucial to both their survival and ability to cause infection.Read moreRead less
Identifying how bacterial cells find their middle: a new perspective. This project will reveal new information about how bacterial cells divide with high precision to ensure that each newborn cell contains the correct genetic material. The research uses frontier techniques, provides innovative training to young Australian researchers, and will identify new ways to treat infections caused by bacteria.
The control of archaeal cell structure by tubulin-family proteins. The objective of this project is to deliver new insights into the evolution and diversity of cell structure and function. Cell theory has been a cornerstone of biology for over 150 years. Yet how early cells developed into modern forms is still a mystery. The primitive and poorly understood third domain of life, Archaea, could hold clues. Recently, proteins were discovered in archaea that are related to the tubulin proteins of al ....The control of archaeal cell structure by tubulin-family proteins. The objective of this project is to deliver new insights into the evolution and diversity of cell structure and function. Cell theory has been a cornerstone of biology for over 150 years. Yet how early cells developed into modern forms is still a mystery. The primitive and poorly understood third domain of life, Archaea, could hold clues. Recently, proteins were discovered in archaea that are related to the tubulin proteins of all higher organisms, which provide the structural framework of cells essential for survival. This project aims to reveal the basis of how the archaeal tubulin proteins control cell shape in response to environmental change, and to develop a new paradigm for archaeal cell biology. This may find application in Australia's biotechnology industries.Read moreRead less
Molecular insights into bacterial metal ion homeostasis and toxicity. This project aims to measure bacterial cellular metal concentrations, elucidate mechanisms cells use to adapt to changing extracellular metal concentrations, and reveal the molecular targets of metal toxicity. Metal ions are essential to all forms of life, and half of all proteins use metal ions for cellular chemical processes. However, how cells precisely balance sufficient metal ions for essential cellular chemistry without ....Molecular insights into bacterial metal ion homeostasis and toxicity. This project aims to measure bacterial cellular metal concentrations, elucidate mechanisms cells use to adapt to changing extracellular metal concentrations, and reveal the molecular targets of metal toxicity. Metal ions are essential to all forms of life, and half of all proteins use metal ions for cellular chemical processes. However, how cells precisely balance sufficient metal ions for essential cellular chemistry without accumulating a toxic excess (metal homeostasis) is poorly understood. Discovering the roles of metal ions in bacterial cells will be key to defining the chemical biology of living systems and will provide information essential to understanding how microbes adapt to changing environments.Read moreRead less
New molecular tools to study the mechanisms of bacterial metal homeostasis. This project aims to provide new insight into how metal ion uptake is regulated. It will precisely measure the cellular concentrations of metal ions, reveal the roles of metal ions in essential cellular processes, and identify the molecular targets of metal toxicity. Metal ions are essential to all forms of life and are used by up to half of all proteins to facilitate cellular chemical processes. The intended outcome of ....New molecular tools to study the mechanisms of bacterial metal homeostasis. This project aims to provide new insight into how metal ion uptake is regulated. It will precisely measure the cellular concentrations of metal ions, reveal the roles of metal ions in essential cellular processes, and identify the molecular targets of metal toxicity. Metal ions are essential to all forms of life and are used by up to half of all proteins to facilitate cellular chemical processes. The intended outcome of the research is to provide new fundamental knowledge of the roles of metal ions in bacterial cells; knowledge that will be key to defining the chemical biology of living systems and will provide information essential to understanding how microbes adapt to changing environments.Read moreRead less
Autotransporter folding: insights advancing recombinant protein production. Imagine a world in which any protein could be produced using a single production platform. This project aims to make this a reality by reengineering autotransporters, a large family of bacterial virulence factors with a modular structure that makes them amenable to rational design. The project plans to examine the structures and folding behaviour of autotransporters and reengineered derivatives fused to target heterologo ....Autotransporter folding: insights advancing recombinant protein production. Imagine a world in which any protein could be produced using a single production platform. This project aims to make this a reality by reengineering autotransporters, a large family of bacterial virulence factors with a modular structure that makes them amenable to rational design. The project plans to examine the structures and folding behaviour of autotransporters and reengineered derivatives fused to target heterologous proteins using biochemical, biophysical, and structural methods. It is expected that this project will provide fundamental insights into factors that dictate autotransporter folding and stability, which may enhance recombinant protein production and drive discovery of strategies to prevent autotransporter-mediated infection.Read moreRead less
Autotransporter assembly: new insights and biotechnological potential. The objective of this project is to improve our understanding of a fundamental biological problem: how autotransporters are assembled into cellular membranes. Autotransporters are a large family of bacterial proteins that play key roles in the pathogenesis of several infectious diseases. Currently, the precise mechanism by which disease-causing molecules are assembled into the outer membranes of bacteria and mitochondria is p ....Autotransporter assembly: new insights and biotechnological potential. The objective of this project is to improve our understanding of a fundamental biological problem: how autotransporters are assembled into cellular membranes. Autotransporters are a large family of bacterial proteins that play key roles in the pathogenesis of several infectious diseases. Currently, the precise mechanism by which disease-causing molecules are assembled into the outer membranes of bacteria and mitochondria is poorly understood. The knowledge that the project develops may inform future strategies aimed at the rational treatment of bacterial and mitochondrial diseases.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100525
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Mucus control: Applying concepts from bacteriophage-mucus interactions. This project aims to examine how mucus-adherent bacteriophage interact with bacteria in mucus as a mechanism to manipulate microbiomes. Bacterial infections at mucosal surfaces in animals are a serious global health threat. Traditionally antibiotics have been used to curb mucosal infections, but antibiotic resistance means new therapies are urgently needed. Bacteriophage – viruses that infect bacteria – can kill bacteria and ....Mucus control: Applying concepts from bacteriophage-mucus interactions. This project aims to examine how mucus-adherent bacteriophage interact with bacteria in mucus as a mechanism to manipulate microbiomes. Bacterial infections at mucosal surfaces in animals are a serious global health threat. Traditionally antibiotics have been used to curb mucosal infections, but antibiotic resistance means new therapies are urgently needed. Bacteriophage – viruses that infect bacteria – can kill bacteria and might provide a layer of antimicrobial immunity in animal mucus. The anticipated outcomes are resolving how bacteriophage control bacteria within mucus, and applying concepts to bioengineer mucosal microbiomes.Read moreRead less
The protein O-glycosylation pathway of Neisseria: a model system for O-glycosylation of bacterial proteins with potential use in biotechnology. Proteins can be modified by the addition of sugar molecules. This process, called glycosylation, has been studied for some time in humans and other higher organisms, but is relatively new in the field of bacteria. This study will use the bacterium Neisseria as a model system for this process and work to harness the system for use in biotechnology.