What Is a Viral Genome
The Viral Genome Is Packed Inside a Symmetric Protein Capsid, Composed of Either a Single or Multiple Proteins, Each of Them Is Encoding a Single Viral Gene...
The viral genome is packed inside a symmetric protein capsid, composed of either a single or multiple proteins, each of them is encoding a single viral gene. Due to this symmetric structure, viruses could encode all the necessary information for constructing a large capsid using a small set of genes.
The main function of the virion is to deliver its DNA or RNA genome into the host cell so that the genome can be expressed (transcribed and translated) by the host cell. The viral genome, often with associated basic proteins, is packaged inside a symmetric protein capsid.
The genome of a positive-strand RNA virus is an mRNA that is translated, upon entry into the cells, to produce proteins needed for transcription and genome replication (for example, RdRp). After initial rounds of translation, the genome serves as the template for synthesis of copy RNA.
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