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DefinitionThis section has been translated automatically.
Viroids are foreign, naked circular RNA molecules (nucleic acids) within a cell. Their multiplication takes place via cellular polymerases in the cell nucleus. They are mainly known as causative agents of plant diseases. Their significance for humans is controversial.
The hepatitis D virus shows similarities to a viroid. As with a viroid, the replication of its RNA does not depend on a helper virus, but on cellular polymerases. In order to develop into an infectious particle, HDV requires the envelope protein of the hepatitis B virus (HBs antigen). HDV infections therefore only occur in combination with HBV.
LiteratureThis section has been translated automatically.
- Hof H et al. (2019) In: Hof H, Schlüter D, Dörries R, Duale Reihe Medizinische Mikrobiologie. 7th, completely revised and extended edition. Stuttgart: Thieme p.277
Prof. Dr. med. Peter Altmeyer