Definition
Virusoids are circular single-stranded RNA(s) dependent on viruses for replication and encapsidation. The genome of virusoids consists of several hundred (200–400) nucleotides and does not code for any proteins.
Related concepts
AbiogenesisAdnaviriaAlphasatellitidaeAmpullaviridaeAnimalApicoplastArchaeaArtificial cellAvsunviroidaeBacteriaBacteriomeBamboo mosaic virus satellite RNA cis-regulatory elementBartogtaviriformidaeBasaltiviridaeBicaudaviridaeBio-like structureBiological dark matterBrachygtaviriformidaeCancer cellCell (biology)Cell divisionChloroplastChromoplastChromosomeCircular chromosomeClavaviridaeClonally transmissible cancerCoacervateColicinCosmidDNA replicationDNA transposonDNA virusDaniel MaziaDefective interfering particleDinodnavirusDiversity-generating retroelementDouble-stranded RNA virusesDsDNA-RT virusDuplodnaviriaEarliest known life formsEfunaviriaEncapsidationEndogenous retrovirusEndogenous viral elementEndonucleaseEndosymbiontEpisomeEukaryoteEurekaviridaeExonucleaseExtrachromosomal DNAFertility factor (bacteria)FloreoviriaFosmidFrancevillian biotaFungal prionFungusFuselloviridaeGeneGene duplicationGenomeGenomic islandGerontoplastGiant virusGlobuloviridaeGroup II intronGroup I catalytic intronGuttaviridaeHalspiviridaeHammerhead ribozymeHeLaHelper dependent virusHelper virusHepatitis B virusHepatitis DHorizontal gene transferHuangdiviridaeHydrogenosomeIncertae sedisIntegrative and conjugative elementInterspersed repeatItzamnaviridaeJeewanuKappa organismLUCALast universal common ancestorLeucoplastLifeLinear chromosomeLomiviridaeMicrobial dark matterMicroparticleMitochondrionMitosomeMobile genetic elementsMobilomeModel lipid bilayerMycoplasma laboratoriumNaldaviricetesNanobacteriumNanobeNational Center for Biotechnology InformationNicotiana velutinaNipumfusiviridaeNitroplastNon-cellular lifeNon-coding DNANucleic acidNucleotideObelisk (biology)ObscuriviridaeOpen reading frameOrganelleOrganismOrigin of replicationOvaliviridaeParakaryonPhagemidPlantPlasmaviridaePlasmidPlastidPleomoviriaPolydnaviriformidaePortogloboviridaePospiviroidaePrionProkaryoteProphageProteinProtein Data BankProteinoidProtistProtocellProvirusR-factorRNARNA-dependent RNA polymeraseRNA virusRNA worldRepeated sequence (DNA)Replicon (genetics)ReproducibilityRetronRetroposonRetrotransposonRetroviroidRetrovirusRetrozymeReverse transcriptase-related cellular geneRhizidiovirusRhodogtaviriformidaeRiboviriaRibozymeRibozyviriaRolling circle replicationSatellite (biology)Satellite tobacco mosaic virusSecondary chromosomeSelf-replicationSelf-splicing intronSingelaviriaSnRNPSpiegelman's MonsterSpiraviridaeSubviral agentsSulphobesSynthetic virologyTandem repeatTelomerase reverse transcriptaseTetrahymena thermophilaThaspiviridaeTi plasmidTolecusatellitidaeTransposable elementTranspovironTrophosomeVaridnaviriaVendobiontaViral vectorViriformViroidVirologyViromeVirophageVirulence factorVirusVirus classificationVolvereviriaWikidataXenobotXigoviridaeYamazakiviridae
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