Physicochemical and Physical Properties
Virions have a buoyant density in CsCl of 1.325-1.332-1.34 g cm-3. There are 1 sedimenting component(s) found in purified preparations, or 2 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 110-125-140 S20w; of the other(s) are 80-85-90 S20w. A260/A280 ratio is 1.44-1.61-1.73. The thermal inactivation point (TIP) is at 40-49.16-55°C. The longevity in vitro (LIV) is 1-2-5 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 3, or 4, or 5. The infectivity is retained when deproteinized with phenol or detergent.