Affiliation:
1. Department of Genetics, School of Medicine, Osaka University, Osaka, Japan
2. Department of Biology, School of Science, Osaka University, Osaka, Japan
Abstract
Ishibashi, Masahide
(Osaka University, Osaka, Japan),
Yoshinobu Sugino, and Yukinori Hirota
. Chromosomal location of thymine and arginine genes in
Escherichia coli
and an F′ incorporating them. J. Bacteriol.
87:
554–561. 1964.—The gene responsible for thymine requirement or independence in
Escherichia coli
K-12 is located on the chromosome, near
Arg
2
(arginine) and between
Sm
(streptomycin) and
Ade
(adenine). A new F′ (called F
15
) carrying the
Thy
(thymine) gene as well as the
Arg
2
gene was discovered. The
Thy
+
(thymine independent) gene on F
15
relieves the defect of all
Thy
−
(thymine requiring) mutants of
E. coli
examined, such as
E. coli
15 T
−
, B3, and
Thy
−
mutants obtained by aminopterine treatment. It can also be transferred to
Thy
−
mutants of
Salmonella typhimurium
and
Serratia marcescens
, converting them to
Thy
+
.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
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