Adenosine triphosphatase activity in myxoviruses.
Sendai and PR 8 viral particles show Na+-K+-ATPase activity, an enzymatic activity which is assumed to be a typical plasma membrane marker and which probably derives from the host cell membrane. Attention has been paid to the peculiar behaviour of Na+-K+-ATPase activity in the two viral strains upon hypoosmotic treatment: Sendai viral particles show enzymatic activity only after swelling, when for PR 8 particles the reverse is true. The results obtained are discussed as suggesting a different organization in the envelope of the viral strains. This approach is supported also by morphological evidence concerned with the osmotic response of viral particles.
D000251:Adenosine Triphosphatases / Q000378:metabolism*; D009980:Influenza A virus / Q000201:enzymology*; D010222:Parainfluenza Virus 1, Human / Q000201:enzymology*
D000251:Adenosine Triphosphatases