Ammonium Regulation in Aspergillus nidulans
نویسندگان
چکیده
منابع مشابه
Ammonium 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...
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1976) which is a defective in killer toxin secretion and in secretion of mature a-factor (T. Achstetter & D. H. Wolf, unpublished work).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...
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Aspergillus nidulans pectate lyase was purified from culture filtrates. The enzyme catalyzed a random eliminative cleavage reaction, had an apparent molecular weight of 40,000, and a pl of 4.2. Pectate lyase antisera were produced and used to identify pectate lyase clones in a cDNA expression library. Thirteen of 14 clones identified immunologically cross-hybridized. The identity of the single-...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1973
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.114.3.943-950.1973