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Structural proteins of rabies virus.

F Sokol, D Stancek, H Koprowski

Journal of Virology

|February 1, 1971

Summary

This study quantifies rabies virus proteins, detailing the number and molecular weights of polypeptides in both the nucleocapsid and envelope. Understanding rabies virus protein composition is key for developing effective vaccines and antiviral therapies.

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Area of Science:

Virology
Molecular Biology
Biochemistry

Background:

Rabies virus is a significant public health concern.
Understanding the structural composition of rabies virions is crucial for developing targeted interventions.

Purpose of the Study:

To determine the precise molecular weights and quantities of individual polypeptides constituting the rabies virion.
To elucidate the protein composition of both the rabies virus nucleocapsid and envelope.

Main Methods:

Purified rabies virions were dissociated into polypeptides using sodium dodecyl sulfate and a reducing environment.
Polypeptides were fractionated via sodium dodecyl sulfate-polyacrylamide gel electrophoresis.
Molecular weights were estimated using protein markers; quantities were calculated based on component proportions and viral RNA molecular weight.

Main Results:

The rabies virus nucleocapsid contains approximately 1,713 molecules of a major polypeptide (62,000 daltons) and 76 molecules of a minor polypeptide (55,000 daltons).
The viral envelope comprises 1,783 molecules of a glycoprotein (80,000 daltons), 789 molecules of a 40,000 dalton polypeptide, and 1,661 molecules of a 25,000 dalton polypeptide.

Conclusions:

This study provides a quantitative analysis of rabies virus structural proteins.
The detailed characterization of rabies virion polypeptides contributes to a deeper understanding of viral structure and assembly.

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