Regulation of choline sulphatase synthesis and activity in Aspergillus nidulans
نویسندگان
چکیده
منابع مشابه
Regulation of proteinase activity in Aspergillus nidulans.
1976) which is a defective in killer toxin secretion and in secretion of mature a-factor (T. Achstetter & D. H. Wolf, unpublished work). With the aid of the two model substrates, Cbz-Tyr-Lys and Cbz-Tyr-Lys-Arg, we also found carboxypeptidase activity in the membrane fraction, which is able to remove the two amino acids lysine and arginine and may thus be involved in further processing of the a...
متن کاملAmmonium regulation in Aspergillus nidulans.
l-Glutamate uptake, thiourea uptake, and methylammonium uptake and the intracellular ammonium concentration were measured in wild-type and mutant cells of Aspergillus nidulans held in various concentrations of ammonium and urea. The levels of l-glutamate uptake, thiourea uptake, nitrate reductase, and hypoxanthine dehydrogenase activity are determined by the extracellular ammonium concentration...
متن کاملGenetic regulation of isocitrate lyase activity in Aspergillus nidulans.
The formation of the glyoxylate cycle enzymes isocitrate lyase and malate synthase is strongly regulated in Aspergillus nidulans and the enzymes are induced at high levels in mycelium grown on acetate and found at low levels in mycelium grown on hexose. A search was made for constitutive mutants forming the enzymes when grown on hexose by the use of a pyruvate carboxylaseless (pycA) strain. Thi...
متن کاملTranscriptional regulation of methionine synthase by homocysteine and choline in Aspergillus nidulans.
Roles played by homocysteine and choline in the regulation of MS (methionine synthase) have been examined in fungi. The Aspergillus nidulans metH gene encoding MS was cloned and characterized. Its transcription was not regulated by methionine, but was enhanced by homocysteine and repressed by choline and betaine. MS activity levels were regulated in a similar way. The repression by betaine was ...
متن کاملRegulation of Development in Aspergillus nidulans and Aspergillus fumigatus
Members of the genus Aspergillus are the most common fungi and all reproduce asexually by forming long chains of conidiospores (or conidia). The impact of various Aspergillus species on humans ranges from beneficial to harmful. For example, several species including Aspergillus oryzae and Aspergillus niger are used in industry for enzyme production and food processing. In contrast, Aspergillus ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1968
ISSN: 0306-3283
DOI: 10.1042/bj1060471