Viral Core:
Typically a virus contains an RNA (ribonucleic acid) or DNA (deoxyribonucleic acid) core of genetic material surrounded by a protein coat. As related to HIV Within HIV's envelope is a bullet-shaped core made of another protein, p24, that surrounds the viral RNA. Each strand of HIV RNA contains the virus' nine genes. Three of these (gag, pol, and env) are structural genes that contain information needed to make structural proteins. The env gene, for example, codes for gp160, a protein that is later broken down to gp120 and gp41. See Surrogate Marker.
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