The genus is distinguished on the basis of genetic characters.
No details are available on the morphology of virions.
Genome (Shi et al., 2018): c. 7,994 nt (5′-UTR: 822 nt; ORF: 6,969 nt; 3′-UTR: 203 nt). The location of the cre has not been identified.
Genome organization and replication
The deduced polyprotein is of 2,323 amino acids. There is an L protein with unknown function. The 1AB protein remains uncleaved. The 2A protein has an H-box/NC sequence motif.
No virus has been isolated. Viral RNA was detected in organ pools (gut, liver, lungs) of Chinese water snakes (Myrrophis chinensis).
Derivation of names
Myrropivirus: derived from Myrrophis chinensis (host) and picornavirus
Species demarcation criteria
There is only a single species in the genus.