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Effect of chloramphenicol and ethidium bromide on the level of ornithine carbamoyltransferase in Neurospora crassa

Journal Article · · J. Bacteriol.; (United States)
OSTI ID:5447215
The specific activity of the nuclear-gene-encoded, mitochondrial arginine biosynthetic enzyme ornithine carbamoyltransferase in Neurospora crassa was elevated in mycelia treated with chloramphenicol or ethidium bromide. The increase in specific activity was caused by an increase in the number of mature enzyme molecules rather than by the activation of a preexisting enzyme. Chloramphenicol and ethidium bromide appeared to act indirectly via arginine-mediated derepression. However, derepression did not appear to result from a drug-mediated decrease in the arginine pool.
Research Organization:
Univ. of California, Los Angeles
OSTI ID:
5447215
Journal Information:
J. Bacteriol.; (United States), Journal Name: J. Bacteriol.; (United States) Vol. 166:2; ISSN JOBAA
Country of Publication:
United States
Language:
English