Small genomes, big lessons: What viruses teach us about structure-based riboregulation.

RNA viruses use structured regulatory RNA elements within their genomes to control viral gene expression, host interactions, and immune evasion, revealing riboregulation principles.

• Why it matters: Although RNA structure in viral genomes is widely observed, functional and mechanistic studies have only recently clarified how these elements operate as regulatory modules shaping infection outcomes.
• What they did: The work reviews mechanistic understanding of RNA structure-based regulation across diverse RNA virus families and compares it with structure-mediated gene control in eukaryotic transcriptomes.
• The result: The synthesis highlights RNA structure as a central regulatory layer in gene expression, with broad therapeutic and synthetic biology potential.