Tolecusatellitidae

	Tolecusatellitidae ''Tolecusatellitidae'' is a family of biological satellites that is not assigned to any higher taxonomic ranks. The family contains two genera and 131 species. This family of viruses depend on the presence of another virus ( helper viruses) to replicate their genomes, as such they have minimal genomes with very low genomic redundancy. Genera The family consists of the following two genera: * '' Betasatellite'' – 119 species * '' Deltasatellite'' – 12 species References Virus families {{Virus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Deltasatellite ''Deltasatellite'' is a genus of family Tolecusatellitidae ''Tolecusatellitidae'' is a family of biological satellites that is not assigned to any higher taxonomic ranks. The family contains two genera and 131 species. This family of viruses depend on the presence of another virus ( helper viruses) to ... containing 12 species. Name The name ''Deltasatellite'' is a combination of ''Delta'', often used in molecular biology to indicate a mutation or deletion, and ''satellitidae'', the fact that it is a satellite. Taxonomy The species are ssDNA unless specified ssDNA(+) References {{Virus-stub Virus genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Satellite (biology) A satellite is a subviral agent that depends on the coinfection of a host cell with a helper virus for its replication. Satellites can be divided into two major classes: satellite viruses and satellite nucleic acids. Satellite viruses, which are most commonly associated with plants, are also found in mammals, arthropods, and bacteria. They encode structural proteins to enclose their genetic material, which are therefore distinct from the structural proteins of their helper viruses. Satellite nucleic acids, in contrast, do not encode their own structural proteins, but instead are encapsulated by proteins encoded by their helper viruses. The genomes of satellites range upward from 359 nucleotides in length for satellite tobacco ringspot virus RNA (STobRV). Most viruses have the capability to use host enzymes or their own replication machinery to independently replicate their own viral RNA. Satellites, in contrast, are completely dependent on a helper virus for replication. The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Taxonomic Rank In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family (biology), family, order (biology), order, class (biology), class, phylum (biology), phylum, kingdom (biology), kingdom, domain (biology), domain. While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behaviour, methods based on genetic analysis have opened the road to cladistics. A given rank subsumes under it less general categories, that is, more specific descriptions of life forms. Above it, each rank is classified within more general categories of organisms and groups of organisms related to each other through inheritance of phenotypic trait, traits or features from common ancestors. The rank of any ''species'' and the description of its ''genus'' is ''basic''; which means that to iden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Helper Virus A helper virus is a virus that allows an otherwise-deficient coinfecting virus to replicate. These can be naturally occurring as with Hepatitis D virus, which requires Hepatitis B virus to coinfect cells in order to replicate. Helper viruses are also commonly used to replicate and spread viral vectors for gene expression and gene therapy. See also * Helper dependent virus * Virophage Virophages are small, double-stranded DNA viral phages that require the Coinfection, co-infection of another virus. The co-infecting viruses are typically giant viruses. Virophages rely on the viral replication factory of the co-infecting giant ... References Virology {{virus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]