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The genus is distinguished on the basis of genetic characters.
No surface morphology of the icosahedral capsid is visible by EM.
Genome (Lange et al., 2014, Barbknecht et al., 2014, Phelps et al., 2014): c. 7700–8050 nt (5′-UTR: >501–712 nt; ORF: 6810–7011 nt; 3′-UTR: 312–363 nt). 5′-UTR contains a type IV IRES. The location of the cre has not been identified.
The deduced polyprotein is of 2,337 aa. There is no L protein. 1AB remains uncleaved and has a N-terminal myristoylation signal. There are two aphthovirus-like 2A proteins with NPG↓P motif.
See discussion under family description.
Limnipiviruses infect freshwater fish. The virus can be grown in various fish cell lines. Experimental infection of bluegills with bluegill picornavirus induces morbidity (inflammation and redness at the base of fins, exophthalmia, abdomen distension, internal hemorrhaging and ascites) and mortality.
Members of a species of the genus Limnipivirus share a common genome organization.
The divergence (number of differences per site between sequences) between members of different Limnipivirus species ranges from 0.3–0.43 for P1 and 0.49–0.57 for 3CD. Sequence data indicate a second genetic type of Limnipivirus B.
Limnipi-: from Greek limne, 'lake' and picornavirus.
Wenling bighead beaked sandfish picornavirus [XQTMC45688]
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