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This is currently a monotypic genus. The single member is distinguished from all other members of the family by encoding a very large P1 protein (83.6 k Da) containing an AlkB domain. It is also phylogenetically distinct (Susaimuthu et al., 2008).
Virions are flexuous filaments 800×11–15 nm in size.
Virions contain a single molecule of linear, positive sense ssRNA, about 11 kb in size.
There is a single CP of 40.9 kDa.
Apart from the size of the P1 coding region, the genome organization is identical to that of most monopartite viruses in the family Potyviridae (Figure 2.Potyviridae).
The virus could not be detected by a universal potyvirus monoclonal antibody but there are no additional data.
The virus has been reported only from wild and cultivated blackberry (Rubus sp.) where it is often symptomless but is also a component of a complex of viruses. It is not known to cause symptoms in any herbaceous test host.
The virus is presumed to be transmitted by an aerial vector that has not yet been identified.
Bramby: from bramble, the host of the type species
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