Pan-vertebrate comparative genomics unmasks retrovirus ... - PNAS
Retroviruses are a unique family of viruses that have fundamentally changed our understanding of genetics, evolution, and medicine. Unlike most living organisms that store genetic information as DNA, retroviruses carry their genetic blueprint as . Their name refers to their "backward" replication process: they use a specialized enzyme called reverse transcriptase to convert their RNA into DNA once they infect a host cell. The Replication Cycle: Rewriting the Host’s Code Retrovirus
: The host cell's machinery mistakenly treats the provirus as one of its own genes, producing viral mRNA and proteins. These components assemble into new, immature viral particles that bud off from the cell. Pan-vertebrate comparative genomics unmasks retrovirus
: Linked to adult T-cell leukemia and certain neurological conditions. HTLV-2 : Associated with milder neurological disorders. Their name refers to their "backward" replication process:
: The enzyme reverse transcriptase "back-transcribes" the viral RNA into a double-stranded DNA copy.
: The virus attaches to specific receptors on a host cell (like CD4 receptors in the case of HIV) and fuses with the membrane, releasing its RNA and enzymes into the cytoplasm.