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The EsV-1 phaeovirus is an exception with 231 protein encoding genes, which means it has one gene per approximately 1450 bp. In spite of the compact genomes typically found in viruses, Phycodnaviridae genomes have repetitive regions usually near the terminal ends and certain tandem repeats located throughout the genome. It is suggested that ...
Genome type and replication cycle of different RNA viruses. RNA viruses in Orthornavirae typically do not encode many proteins, but most positive-sense, single-stranded (+ssRNA) viruses and some double-stranded RNA (dsRNA) viruses encode a major capsid protein that has a single jelly roll fold, so named because the folded structure of the protein contains a structure that resembles a jelly ...
The viruses have large, double-stranded DNA genomes (300 to >1000 kilobasepairs) that encode a large contingent of genes (of the order of 1000 genes). [ 3 ] [ 5 ] The best characterized giant viruses are the phylogenetically related mimivirus and megavirus , which belong to the family Mimiviridae (aka Megaviridae ), and are distinguished by ...
Most viruses have RNA genomes. Plant viruses tend to have single-stranded RNA genomes and bacteriophages tend to have double-stranded DNA genomes. [26]: 96–99 Viral genomes are circular, as in the polyomaviruses, or linear, as in the adenoviruses. The type of nucleic acid is irrelevant to the shape of the genome.
Virosphere (virus diversity, virus world, global virosphere) was coined to refer to all those places in which viruses are found or which are affected by viruses. [1] [2] However, more recently virosphere has also been used to refer to the pool of viruses that occurs in all hosts and all environments, [3] as well as viruses associated with specific types of hosts (prokaryotic virosphere, [4 ...
Whole genomes. This level contains information about the virus species or isolate and its entire genomic sequence. Annotated genes. This level contains all the predicted ORFs (open reading frames) in a particular virus genome, together with their DNA and (translated) protein sequences. Ortholog groups (families).
This is a list of all virus species, including satellites and viroids. Excluded are other ranks, and other non-cellular life such as prions. Also excluded are common names and obsolete names for viruses. The taxonomy is taken from ICTV taxonomy 2022 release [1] For a list of virus families and subfamilies, see List of virus families and ...
Virus classification is the process of naming viruses and placing them into a taxonomic system similar to the classification systems used for cellular organisms. Viruses are classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause.