Peptide utilization by nitrogen-starved Neurospora crassa.

Publication/Presentation Date

3-1-1983

Abstract

Peptides ranging in size from a mean number of 30 residues down to dipeptides supported growth of a leucine auxotroph when used as both a nitrogen and leucine source. Under nitrogen-limiting conditions, the peptides induced extracellular peptidohydrolytic activity, hydrolyzing peptides to monomer amino acids. Growth of a leu-2 mutant of Neurospora crassa on those peptides transportable by the oligopeptide transport system did not result in induction of hydrolytic activity, whereas growth of a leu-2; gltR mutant on these same peptides resulted in induction of peptidohydrolytic activity. The induced extracellular proteolytic activity was shown to be analogous to that inducible by growth on proteins, e.g., bovine serum albumin.

Volume

153

Issue

3

First Page

1567

Last Page

1569

ISSN

0021-9193

Disciplines

Anesthesiology | Medicine and Health Sciences

PubMedID

6219099

Department(s)

Department of Anesthesiology

Document Type

Article

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