Fibre proteins extend outward from the surface of the protein coat.

This type of process is typically used for parvoviruses and other viruses containing a protein coat.

Sometimes the protein coat is itself enclosed within a fatty membrane.

The phage is covered by a protective protein coat, which normally contains sulfur.

The two viruses are also quite different genetically, and their protein coats differ in size and composition.

A virus is basically a core of genetic material encased in a protein coat.

The viral protein coat has changed and the old vaccine won't work now.

According to their view, this protein coat had no particular structure and was simply formed by adsorption from solution.

Inside the cell it finds the material to make a new protein coat for itself.

In fact, it manages to form replicas of itself and produces a new protein coat for each replica.