Ammonium Repression of Extracellular Protease in Aspergillus nidulans | Zendy

B. L. Cohen | Zendy

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Ammonium Repression of Extracellular Protease in Aspergillus nidulans

Author(s) -

B. L. Cohen

Publication year - 1972

Publication title -

journal of general microbiology

Language(s) - English

Resource type - Journals

eISSN - 2059-9323

pISSN - 0022-1287

DOI - 10.1099/00221287-71-2-293

Subject(s) - aspergillus nidulans , derepression , mutant , protease , biochemistry , ammonium , methylamine , glutamate dehydrogenase , biology , chemistry , enzyme , psychological repression , glutamate receptor , gene , gene expression , receptor , organic chemistry

Summary: Extracellular protease of Aspergillus nidulans is repressible by ammonium. A mutant (xpr Di) selected for derepression of protease in the presence of ammonium is also derepressed for nitrate reductase, xanthine dehydrogenase and glutamate uptake; it retains the ability to use ammonium as sole nitrogen source. The mutant is partially dominant in heterozygous diploids. The mutation does not confer methyl-amine resistance, nor are methylamine-resistant (meaA) strains derepressed for protease.

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