<P> A viral protein is both a component and a product of a virus . Viral proteins are grouped according to their functions , and groups of viral proteins include structural proteins , nonstructural proteins , regulatory , and accessory proteins . Viruses are non-living and they do not have the means to reproduce on their own . They depend on their host cell 's metabolism for energy , enzymes , and precursors , in order to reproduce . As such , viruses do not code for many of their own viral proteins , but rather , they use the host cell 's machinery to produce the viral proteins they require for replication . </P>
<P> A viral protein is both a component and a product of a virus . Viral proteins are grouped according to their functions , and groups of viral proteins include structural proteins , nonstructural proteins , regulatory , and accessory proteins . Viruses are non-living and they do not have the means to reproduce on their own . They depend on their host cell 's metabolism for energy , enzymes , and precursors , in order to reproduce . As such , viruses do not code for many of their own viral proteins , but rather , they use the host cell 's machinery to produce the viral proteins they require for replication . </P>
what is needed for virus proteins to be made
what is needed for virus proteins to be made
their host cell 's metabolism for energy , enzymes , and precursors
their host cell 's metabolism for energy , enzymes , and precursors