CGSC Strain#: 4945
Strain Designation: AT9      Source of Strain: A.M. Reiner
Sex: Hfr    Point of Origin#: 21   Map Position: 97.00   Direction of Marker Transfer: Clockwise
Chromosomal Markers: rna-19, λ^-, gdhA2, relA1, spoT1, metB1
Strain Comments:

• The unidentified trace growth factor requirement in A19 was removed by transduction and the strain was cured of lambda.
• rna-19-- : Also References \\ Weatherford et al. 1972 J.Biol.Chem.247:540 \\ Studier 1975 J.Bacteriol.124:307 \\ Apirion and Watson 1975 J.Bacteriol.124:317
• rna-19-- : Additional references to strain A19 and its derivatives: \\ Gesteland 1966 J.Mol.Biol.16:67 \\ Reiner 1969 J.Bacteriol. 97:1431,1437,1522
• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• rna-19 was formerly called rns-19

References:

• Reiner, AM 1969. Characterization of polynucleotide phosphorylase mutants of Escherichia coli. J. Bacteriol. 97(3):1437-43.