TABLE 2.
Mutant | Nucleotide |
Time of full CPE | Growth phenotype of alanine mutantb | Varianta | Growth phenotype of variant mutantb | |
---|---|---|---|---|---|---|
wt | Alanine mutanta | |||||
F244A | TTC | gcC | Nonviable | |||
M246A | ATG | gcc | Transfection | Viable | gTc(valine) | ts |
I248A | ATT | gcc | Transfection | qi | gTc(valine) | ts |
K259A | AAA | gcA | Transfection | cs | gcA | cs |
L260A | TTG | gca | Passage 1 | qi | gTa(valine) | wt-like |
G258A | GGG | Gcc | Transfection | Viable | Gcc | wt-like |
Lowercase letters indicate changed nucleotides.
ts, temperature sensitive; cs, cold sensitive; qi, quasi-infectious.