Affiliation:
1. School of Microbiology, University of Melbourne, Parkville, Victoria, Australia
Abstract
Mutants of
Escherichia coli
K-12 have been isolated in which several enzymes concerned with tyrosine biosynthesis are derepressed. These mutants were obtained from a parent strain possessing only a single 3-deoxy-
d
-arabinoheptulosonic acid-7-phosphate (DAHP) synthetase isoenzyme, DAHP synthetase (tyr), by selecting for resistance to the tyrosine analogue, 4-aminophenylalanine. The mutation responsible for this derepression has been mapped and the gene, which is not closely linked to
aroF
and
tyrA
, has been designated
tyrR
.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Cited by
90 articles.
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