Genus: Sadwavirus


Genus: Sadwavirus

Distinguishing features

Similar to comoviruses, sadwaviruses have two CPs, one large and one small. The genome of sadwaviruses is bipartite and the genomic organization is similar to that of comoviruses. The proteinase of sadwaviruses is distinct from that of other viruses in the family in that it does not have a conserved His or Leu in the active site. In addition, the cleavage sites recognized by sadwavirus proteinases are unique with an A or a T at the -1 position (Table 3.Secoviridae). In contrast to comoviruses, there is no evidence that two overlapping polyproteins are encoded by RNA-2. Similar to some nepoviruses, extensive sequence identity between RNA-1 and RNA-2 are found in the 5ʹ UTRs as well as in the 5ʹ end of the putative coding region.

Virion

See discussion under family description.

Genome organization and replication

See discussion under family description.

Biology

See discussion under family description.

Species demarcation criteria

See discussion under family description.

Member Species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus Abbreviation(s)Isolate Abbreviation
Satsuma dwarf virussatsuma dwarf virusS/58RNA-1: AB009958; RNA-2: AB009959RNA-1: NC_003785; RNA-2: NC_003786Complete genomeSDV

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.
Download GenBank/EMBL query for sequences listed in the table here.