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Satellite Virus
"Satellite Viruses contain the genetic components to construct their own capsid and make their own virions but what makes them different from any ordinary virus is their reliance on a symbiotic relationship with a helper virus to catalyze the replication of a satellite virus’s genome. Satellite Viruses are most known to infect plants but are also able to infect arthropods, humans, and protists."

History & Discovery
The tobacco necrosis virus was the first virus that lead to the discovery of the first satellite virus in 1962. Scientists discovered that the first satellite had the components to make its own protein shell. A few years later in 1969, did scientists truely discovery another symbiotic relationship with the tobacco ringspot neopvirus (TobR and another satellite virus. The emergence of Satellite RNA is said to have come from either the genome of the host or its co-infecting agents, and any vectors leading to transmission.

Replication Strategies
Satellite viruses are unable to carry out their own replication so they look for helper viruses to contribute the proper translation machinery to do so. a key element that helper viruses posses that satellites needs are to replicate their satellite RNA are replicases