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Phylum of viruses From Wikipedia, the free encyclopedia
Cressdnaviricota is a phylum of viruses with small, circular single-stranded DNA genomes and encoding rolling circle replication-initiation proteins with the N-terminal HUH endonuclease and C-terminal superfamily 3 helicase domains.[1][2] While the replication-associated proteins are homologous among viruses within the phylum, the capsid proteins are very diverse and have presumably been acquired from RNA viruses on multiple independent occasions.[3][4][5][6] Nevertheless, all cressdnaviruses for which structural information is available appear to contain the jelly-roll fold.[5][6]
Cressdnaviricota | |
---|---|
Virions of Maize streak virus | |
Virus classification | |
(unranked): | Virus |
Realm: | Monodnaviria |
Kingdom: | Shotokuvirae |
Phylum: | Cressdnaviricota |
Classes | |
See text |
The following classes are recognized:
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