Enveloped, spherical.


The genome is segmented and consists of four segments of linear negative-sense and single-stranded RNA. The complete genome is around 12.2 kb.


The viral RNA dependent RNA polymerase (L) binds to a promoter on each encapsidated segment, and transcribes the mRNAs. These are capped by L protein during synthesis using cap snatching



  1. Virus attaches to host receptors.
  2. Fusion of virus membrane with the cell membrane; ribonucleocapsid segments are released in the cell.
  3. Transcription, viral mRNAs are capped in the cytoplasm.
  4. Replication presumably starts when enough nucleoprotein is present to encapsidate neo-synthetized antigenomes and genomes.
  5. The ribonucleocapsids buds from a cellular membrane, releasing the virion.

Matching UniProtKB/Swiss-Prot entries

4 entries grouped by strain (browse by keywords)

4 entries

European mountain ash ringspot-associated virus (isolate Sorbus aucuparia) (EMARAV) reference strain

VG27_EMARV Uncharacterized 27 kDa protein
L_EMARV RNA-directed RNA polymerase L (Protein L) (EC (Large structural protein) (Replicase) ...
NCAP_EMARV Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)
GLYC_EMARV Envelope glycoprotein (GP) [Cleaved into: Glycoprotein G2; Glycoprotein G1]