Physicochemical
RNA, Single Strand
|
|
1
|
no
|
38-45 S(S)
|
60-70%
|
20-25%
|
3-13% (2, 6); RNA 0.
|
5
|
L (MW: 150-200 x 10^3), G (MW: 64 x 10^3), N (MW: 52 x 10^3), M (MW: 24 x 10^3), NS (MW: 29-45 x 10^3) (3, 6)
|
0
|
|
1.18-1.20 in sucrose
|
625 S (6)(S)
|
1.32 in CsCl
|
140 S (6)(S)
|
|
| Stability of Infectivity (effects) |
unstable at pH 3; stable in range pH 5-10
|
sensitive
|
|
|
sensitive
|
|
|
sensitive
|
|
|
rapidly inactivated by ultraviolet and x-radiation (3)
|
|
| Virion Morphology |
bullet-shaped
|
180 x 75 nm (4 ,6)
|
nm
|
nm
|
electron microscopy
|
surface projections 6-10 nm; bilayer lipid membrane (3)
|
extended; 3.5 nm; helical: 30-35 turns, 49nm outer, 29 nm inner diameter (6)
|
|
| Morphogenesis |
cytoplasm
|
buds from plasma membrane (3, 4)
|
extracellular and in cytoplasmic vesicles
|
not usually
|
|
|
| Hemagglutination |
Yes
|
infected BHK-21 cell cultures (6)
|
goose
|
|
6.4 (5)
|
|
low temperature
|
hemagglutinin prepared from cells maintained in medium containing 0.4% bovine albumin and no serum (5)
|
CF and NT
|
hemagglutinin prepared from cells maintained in medium containing 0.4% bovine albumin and no serum (5)
|
| |
