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Unravelling cell wall polysaccharide biosynthesis in pathogenic zygomycetes. This project aims to define mechanisms that control cell wall composition and stability in Rhizopus oryzae, a zygomycete fungus responsible for life-threatening human infections. The biochemical properties and function of vital enzymes involved in a newly discovered cell wall polysaccharide biosynthetic pathway will be determined using innovative approaches at the interface of biochemistry, microbiology, cell biology an ....Unravelling cell wall polysaccharide biosynthesis in pathogenic zygomycetes. This project aims to define mechanisms that control cell wall composition and stability in Rhizopus oryzae, a zygomycete fungus responsible for life-threatening human infections. The biochemical properties and function of vital enzymes involved in a newly discovered cell wall polysaccharide biosynthetic pathway will be determined using innovative approaches at the interface of biochemistry, microbiology, cell biology and structural biology. Expected outcomes include new knowledge on the enzymes that synthesise major fucose-based carbohydrates, to guide the future development of novel strategies for antifungal therapies. The data will also be applicable to animal protection from related zygomycete pathogens.
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Novel regulation of TRP channels by oxygen-dependent hydroxylation. Factor inhibiting HIF-1 (FIH-1) is an oxygen-sensing asparaginyl hydroxylase. A bioinformatic search identified specific transient receptor potential (TRP) ion channels as likely substrates. The hypothesis is that TRP channels are regulated by hypoxia, mediated through a novel mechanism of oxygen-dependent hydroxylation by FIH. The aim of this project is to investigate how hydroxylation by FIH mediates the hypoxic regulation of ....Novel regulation of TRP channels by oxygen-dependent hydroxylation. Factor inhibiting HIF-1 (FIH-1) is an oxygen-sensing asparaginyl hydroxylase. A bioinformatic search identified specific transient receptor potential (TRP) ion channels as likely substrates. The hypothesis is that TRP channels are regulated by hypoxia, mediated through a novel mechanism of oxygen-dependent hydroxylation by FIH. The aim of this project is to investigate how hydroxylation by FIH mediates the hypoxic regulation of TRP channels. Preliminary data show that the first candidate, TRPV3, is activated in hypoxia, is hydroxylated by FIH, and hydroxylation mediates changes in activity. Ion channels are important for the physiological response to hypoxia, and this project aims to define a novel mechanism for this response, with relevance to mammalian physiology.Read moreRead less