CGSC Strain#: 4449
Strain Designation: Strain 1200      Source of Strain: H. Hoffmann-Berling
Sex: F- Chromosomal Markers: rna-1, glnV44(AS), λ^-, rfbC1, endA1, spoT1, thiE1
Strain Comments:

• endA1-- G to A transition mutation resulting in E208K amino acid substitution.
• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• glnV44(AS) was formerly called supE44
• glnV44(AS) was formerly called su⁺_II
• rfbC1 was formerly called rfbD1
• thiE1 was formerly called thi-1
• = good miniprep dsDNA quality
• AS = amber(UAG) suppressor

References:

• Durwald, H., H. Hoffmann-Berling 1968. Endonuclease I-deficient and ribonuclease I-deficient Escherichia coli mutants. J.Mol.Biol. 34:331-346