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The genus is distinguished on the basis of genetic characters.
No details are available on the morphology of the virions.
Genome (Sauvage et al., 2012, Boros et al., 2015a, Yu et al., 2013): c. 6,938 nt (5′-UTR: c. 420 nt; ORF: c. 6,402 nt; 3′-UTR: 136 nt). The location of the cre has not been identified.
The deduced polyprotein is of c. 2,133 aa. There is no L protein. 1AB protein remains uncleaved. The aphthovirus-like 2A1 protein has a NPG¯P sequence motif; the function of 2A2 is unknown. 3Dpol of all known pasiviruses has the motif ASG rather than PSG.
The natural host is likely the domestic pig (Sus scrofa). Viral RNA has been detected in faeces of pigs.
Pasi-: from parecho sister-clade
There is only a single species in the genus.
Four types have been classified by means of phylogenetic clustering.
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