TABLE 2.
Virion morphology of wild type (Alb129) and E protein mutant 4 (Alb183: D60A, R61A, K63A) grown at 33 and 39°Ca
| Virus | 33°C
|
39°C
|
||
|---|---|---|---|---|
| No. (%) of normal virions | No. (%) of abnormal virions | No. (%) of normal virions | No. (%) of abnormal virions | |
| Wild type | 170 (85) | 30 (15) | 178 (89) | 22 (11) |
| Mutant 4 | 36 (18) | 164 (82) | 24 (12) | 176 (88) |
a
For each sample the first 200 viral particles encountered on an electron microscopy grid were scored as either normal (spherical to ovoid) or abnormal (several times longer than wide, dumbbell-shaped, or having some other noticeable structural perturbation).