CGSC Strain#: 4840
Strain Designation: KY4040      Source of Strain: K. Ito
Sex: F- Chromosomal Markers: tyrT58(AS), trpS44, mel-1
Strain Comments:

• trpS44 is called trpS5 in the papers cited below.
• trpS44-- is called trpS5 in the papers cited.
• tyrT58(AS) was formerly called supF58
• AS = amber(UAG) suppressor

References:

• Ito, K, S Hiraga, T Yura 1969. Tryptophanyl transfer RNA synthetase and expression of the tryptophan operon in the trpS mutants of Escherichia coli. Genetics 61(3):521-38.
• Ito, K 1972. Regulatory mechanism of the tryptophan operon in Escherichia coli: possible interaction between trpR and trpS gene products. Mol. Gen. Genet. 115(4):349-63.