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- W2065657925 abstract "PrtT is a fungal-specific transcription activator of extracellular proteases in Aspergilli. In this study, the roles of the PrtT homolog from Penicillum oxalicum was investigated by transcription profiling in combination with electrophoretic mobility shift assay (EMSA). The prtT deletion dramatically reduced extracellular protease activities and caused intracellular nutrient limitation when cultured on casein as the sole carbon source. PrtT was found to directly regulate the expression of an intracellular peptidase encoding gene (tripeptidyl-peptidase) and the gene encoding the extracellular dipeptidyl-aminopeptidase V, in addition to the expected extracellular peptidase genes (carboxypeptidase and aspergillopepsin). Five amylase genes (α-amylase, glucoamylase, α-glucosidase) and three major facilitator superfamily transporter genes related to maltose, monosaccharide and peptide transporting were also confirmed as putative targets of PrtT by EMSA. In contrast, the transcription levels of other genes encoding polysaccharide degrading enzymes (e.g. cellulases) and most iron or multidrug transporter encoding genes were up- or down-regulated in the ΔprtT mutant due to nutrient limitation resulting from the reduced usage of the sole carbon source, casein. These results deepen the understanding of the interaction of regulation systems for nitrogen and carbon catabolism, which benefit strain improvement of P. oxalicum for industrial enzyme production." @default.
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- W2065657925 date "2014-02-01" @default.
- W2065657925 modified "2023-09-23" @default.
- W2065657925 title "The distinctive regulatory roles of PrtT in the cell metabolism of Penicillium oxalicum" @default.
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- W2065657925 doi "https://doi.org/10.1016/j.fgb.2013.12.001" @default.
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