Virion

Nucleic acid

Length of genome (Lau et al., 2014, Bullman et al., 2014): up to 9,809 nt (5'-UTR: up to 939 nt; ORF: 8,595; 3'-UTR: 308 nt). 5'-UTR contains a predicted type II IRES. The location of the cre has not been identified.

Genome organization and replication

Genome layout:

VPg+5'UTR^IRES-II[L/1AB-1C-1D/2A^H-box/NC-2B-2C/3A-3B-3C-3D]3'UTR-poly(A)

The deduced polyprotein has 2,864 amino acids. There is a L protein unknown function. 1AB remains uncleaved. 2A protein has a H-box/NC motif. 

Antigenicity

See discussion under family description.

Biology

Viral RNA was detected in faeces of chickens.

Species demarcation criteria

Within the single species Sicinivirus A, sequence data indicate five genetic types.

Member species

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Derivation of names

Sicini: from Gaelic sicín, "chicken"