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Adenosine triphosphatase activity in myxoviruses
Bollettino Dell'Istituto Sieroterapico Milanese
|January 1, 1976
Summary
Sendai and PR 8 viral particles exhibit sodium-potassium-transporting ATPase (Na+-K+-ATPase) activity. Their distinct responses to swelling suggest different viral envelope structures.
Area of Science:
- Virology
- Biochemistry
- Cell Biology
Background:
- Viral envelopes are derived from host cell membranes.
- Sodium-potassium-transporting ATPase (Na+-K+-ATPase) is a plasma membrane marker.
- Different viral strains may have distinct envelope organizations.
Purpose of the Study:
- To investigate the Na+-K+-ATPase activity in Sendai and PR 8 viral particles.
- To explore the differential osmotic behavior of these viral strains.
- To infer differences in viral envelope organization based on enzymatic and morphological responses.
Main Methods:
- Assaying Na+-K+-ATPase activity in viral particles.
- Subjecting viral particles to hypoosmotic treatment.
- Observing morphological changes in response to osmotic stress.
Main Results:
- Both Sendai and PR 8 viral particles display Na+-K+-ATPase activity.
- Sendai viral particles showed activity after swelling, while PR 8 particles showed activity before swelling.
- Morphological evidence supported differing osmotic responses.
Conclusions:
- The distinct osmotic behaviors suggest different organizations within the envelopes of Sendai and PR 8 viral strains.
- Na+-K+-ATPase activity and osmotic response serve as indicators of viral envelope structure.
- This study provides insights into viral envelope composition and its influence on viral particle behavior.