Different sugar kinases are involved in the sugar sensing of Galdieria sulphuraria

Plant Physiology | January 1, 2002| | Copyright

Different Sugar Kinases Are Involved in the Sugar Sensing of Galdieria sulphuraria1

The unicellular acidophilic red alga Galdieria sulphuraria is a facultative heterotroph with a complex uptake system for sugars and polyols, consisting of at least 14 transporters. Upon transfer to heterotrophic conditions, these transporters were induced simultaneously. Once induced, transporters for common hexoses and pentoses are apparently not down-regulated under heterotrophic conditions. Uptake of deoxysugars (FUC/Rha), however, was repressed by substrates metabolized via gluco-, galacto-, glycero-, or ...

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