Definition
Baltimore classification is a system used to classify viruses by their routes of transferring genetic information from the genome to messenger RNA (mRNA). Seven Baltimore groups, or classes, exist and are numbered in Roman numerals from I to VII. Groups are defined by whether the viral genome is made of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA), whether the genome is single- or double-stranded, whether a single-stranded RNA genome is positive-sense (+) or negative-sense (–), and whether the virus makes DNA from RNA. Viruses within Baltimore groups typically have the same replication method, but other characteristics such as virion structure are not directly related to Baltimore classification.
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nucleusChaseviridaeChitoviralesChrymotiviricetesChrysoviridaeChunqiuviricetesChuviridaeCircoviridaeCirliviralesClavaviridaeClosteroviridaeCommensaviricotaCommon ancestryConcatemerCoronaviridaeCoronavirusCorticoviridaeCossaviricotaCovalentCremegaviridaeCremeviralesCrepuscuviridaeCressdnaviricotaCruliviridaeCryppaviralesCrytulviralesCurvulaviridaeCystoviridaeCytoplasmCytosolDNA polymeraseDNA repairDNA virusDavid BaltimoreDeltaflexiviridaeDemerecviridaeDeoxyribonucleic acidDicistroviridaeDinodnavirusDirectionality (molecular biology)DividoviricotaDouble-stranded RNA virusesDrexlerviridaeDsDNA-RT virusDsDNA virusDuinviridaeDumbiviridaeDuplodnaviriaDuplopiviricetesDuplornaviricotaDurnaviralesEIF2EbolaEbolavirusEfunaviriaEllioviricetesEndomembraneEndonucleaseEndornaviridaeEnzymeEugene KooninEukaryotic small ribosomal subunit (40S)EurekaviridaeEuroniviridaeF-plasmidFaserviricetesFiersviridaeFiloviridaeFimoviridaeFinnlakeviridaeFive-prime capFive prime untranslated regionFlasuviricetesFlaviviridaeFloreoviriaFoot-and-mouth disease virusFuselloviridaeGammaflexiviridaeGammaretrovirusGeminiviridaeGene expressionGenetic informationGenetic recombinationGenomeGenomoviridaeGeplafuviralesGhabriviralesGlobuloviridaeGoujianviralesGresnaviridaeGuelinviridaeGuttaviridaeHBsAgHIVHalopaniviralesHaloruviralesHalspiviridaeHantaviridaeHaploviricotinaHelvetiaviraeHepadnaviridaeHepatitis B virusHepatitis D virusHepeliviralesHepeviridaeHerelleviridaeHerpesviralesHerpesviridaeHerpesvirusHerviviricetesHeunggongviraeHofneiviricotaHost (biology)Host rangeHoweltoviricetesHuangdiviridaeHuolimaviricetesHydroxylHypoviridaeHytrosaviridaeIflaviridaeImiterviralesInfluenza A virusInoviridaeInsthoviricetesIntegraseInternational Committee on Taxonomy of VirusesIridoviridaeItzamnaviridaeJingchuviralesKalamaviralesKitaviridaeKitrinoviricotaLaserviricetesLautamoviralesLavidaviridaeLefaviralesLeishbuviridaeLenarviricotaLeucineLeviviricetesLigamenviralesLigation (molecular biology)LipidLipothrixviridaeLispiviridaeLoebviraeLomiviridaeLuteoviridaeMagsaviricetesMalacoherpesviridaeMalgrandaviricetesMarnaviridaeMarseilleviridaeMartelliviralesMatonaviridaeMatshushitaviridaeMaveriviricetesMayoviridaeMeasles virusMedioniviridaeMegabirnaviridaeMegaviricetesMesoniviridaeMessenger RNAMetaviridaeMetaxyviridaeMiaviricetesMicrobiology and Molecular Biology ReviewsMicroviridaeMilneviricetesMimiviridaeMindiviralesMitoviridaeMoleculeMonjiviricetesMonodnaviriaMononegaviralesMononiviridaeMonophyleticMouviricetesMulpaviralesMultipartiteMuviralesMymonaviridaeMyoviridaeMypoviridaeMyriaviridaeNairoviridaeNaldaviricetesNanghoshaviridaeNanhypoviridaeNanoviridaeNarnaviridaeNatareviridaeNational Center for Biotechnology InformationNegarnaviricotaNegative-sense ssRNA virusNidoviralesNimaviridaeNipumfusiviridaeNodamuviralesNodaviridaeNorziviralesNucleobaseNucleocytoviricotaNucleoproteinNudiviridaeNyamiviridaeObscuriviridaeOlifoviridaeOpen reading frameOrigin of replicationOrterviralesOrthomyxoviridaeOrthopolintoviralesOrthornaviraeOurliviralesOvaliviridaePandoravirus salinusPapillomaviridaePapillomavirusPapovaviricetesParamyxoviridaePararnaviraePartitiviridaeParvoviridaeParvovirusPatataviralesPaulinoviridaePeploviricotaPeptidePeribunyaviridaePermutotetraviridaePetitviralesPhasmaviridaePhenuiviridaePhixviricotaPhosphatePhycodnaviridaePiccoviralesPicobirnaviridaePicornaviralesPicornaviridaePimascoviralesPisoniviricetesPisuviricotaPlant cellPlant virusPlasmaviridaePlasmidPlasmidsPlasmodesmataPlectroviridaePleolipoviridaePleomoviriaPneumoviridaePodoviridaePokkesviricetesPolintoviricetesPoliviralesPolyadenylationPolycipiviridaePolydnaviridaePolymerase stutteringPolymycoviridaePolyomaviridaePolyploviricotinaPortogloboviridaePositive-sense ssRNA virusPotyviridaePoxviridaePoxvirusPreplasmiviricotaPriklausoviralesPrimaviralesProdugelaviricotaProteinProtein domainProtistProvirusPseudoviridaeQinviridaeQuadriviridaeQuambiviridaeQuintoviricetesRNA-dependent RNA polymeraseRNA editingRNA polymeraseRNA polymerase IIRNA recognition motifRNA virusRNA worldRealm (virology)RecreviralesRedondoviridaeRelease factorReoviralesReoviridaeRepensiviricetesReplicaseReplication forkReplicative transpositionResentoviricetesRetrotransposonRetroviridaeReverse transcribing virusReverse transcriptaseReverse transcriptionRevtraviricetesRhabdoviridaeRhizidiovirusRibonucleic acidRibosomal frameshiftingRibosomal shuntingRibosomeRibosome shuntingRiboviriaRibozymeRibozyviriaRolling circle replicationRolling hairpin replicationRoman numeralsRoniviridaeRotavirusRountreeviridaeRowaviralesRudiviridaeSalasmaviridaeSaleviricotaSangerviraeSanitaviralesSarthroviridaeSatellite virusSchitoviridaeSecoviridaeSelfish genetic elementSense (molecular biology)SepolyviralesSequence homologySerpentoviralesShotokuviraeSimuloviridaeSingelaviriaSinhaliviridaeSiphoviridaeSmacoviridaeSobeliviralesSolemoviridaeSolinviviridaeSolspiviridaeSphaerolipoviridaeSpike proteinSpiraviridaeSsDNA virusSsRNA-RT virusSteitzviridaeStellaviralesStelpaviricetesStem-loopSuforviricetesSunviridaeSwiss Institute of BioinformaticsTRNATaleaviricotaTectiliviricetesTectiviridaeThaspiviridaeThymineTimloviralesTobaniviridaeTogaviridaeTokiviricetesToliviralesTolucaviricetesTombusviridaeTospoviridaeTotiviridaeTranscription (biology)Transcription preinitiation complexTranslation (biology)TrapaviraeTrimbiviridaeTristromaviridaeTubulaviralesTurriviridaeTymoviralesTymoviridaeUnambiviridaeUracilUroviricotaVadim AgolVaridnaviriaVidaverviricetesVinaviralesViralZoneViral envelopeViral genomeViral replicationViral sheddingVirgaviridaeVirionVirionsViromeVirus classificationVirus evolutionVolvereviriaWolframviralesWupedeviridaeXigoviridaeXinmoviridaeYamazakiviridaeYueviridaeYunchangviricetesZilligviraeZobellviridaeZurhausenvirales
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