Enveloped, bullet shaped. 180 nm long and 75 nm wide.


Negative-stranded RNA linear genome, about 14.6-14.8 kb in size. Encodes for 5 to 9 proteins.


The viral RNA dependent RNA polymerase binds the encapsidated genome at the leader region, then sequentially transcribes each genes by recognizing start and stop signals flanking viral genes. mRNAs are capped and polyadenylated by the L protein during synthesis.



  1. Attachment of the viral G glycoproteins to host receptors mediates Clathrin-mediated endocytosis of the virus into the host cell.
  2. Fusion of virus membrane with the vesicle membrane; ribonucleocapsid is released into the cytoplasm.
  3. Sequential transcription, viral mRNAs are capped and polyadenylated by polymerase stuttering in the cytoplasm.
  4. Replication presumably starts when enough nucleoprotein is present to encapsidate neo-synthetized antigenomes and genomes.
  5. The ribonucleocapsid binds to the matrix protein and buds via the host ESCRT complexes occurs at the plasma membrane, releasing new virions.

Matching UniProtKB/Swiss-Prot entries

18 entries grouped by strain (browse by keywords)

All proteins are shown (view only 12 complete proteome entries)

12 entries

Bovine ephemeral fever virus (strain BB7721) (BEFV) reference strain

VPA1_BEFVB Protein alpha-1
VPA2_BEFVB Protein alpha-2
VPA3_BEFVB Protein alpha-3
PHOSP_BEFVB Phosphoprotein (Protein P) (Protein M1)
MATRX_BEFVB Matrix protein
L_BEFVB RNA-directed RNA polymerase L (Protein L) (Large structural protein) (Replicase) (Transcriptase) ...
VPB_BEFVB Protein beta
VPG_BEFVB Protein gamma
VPP_BEFVB Putative protein P'
VGLN_BEFVB Non-structural glycoprotein GNS
GLYCO_BEFVB Glycoprotein
NCAP_BEFVB Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)

6 entries

Adelaide River virus (ARV)

VPA1_ARV Protein alpha-1
VPA2_ARV Protein alpha-2
VPB_ARV Protein beta
VGLN_ARV Non-structural glycoprotein
GLYCO_ARV Glycoprotein
NCAP_ARV Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)