Marafivirus (taxid:12051)



Non-enveloped, isometric capsid with T=3 icosahedral symmetry, about 30 nm in diameter.



Linear, C-rich, ssRNA(+) genome of 6-7 kb. There is no VPg at the 5'-terminus. Some members (but not the type member) have a polyA tail at the 3'-terminus.


The virion RNA is infectious and serves as both the genome and viral messenger RNA. The genomic RNA encodes a large replication polyprotein which is cleaved. The capsid proteins are probably translated from a 3'-coterminal subgenomic RNA.



  1. Virus penetrates into the host cell.
  2. Uncoating, and release of the viral genomic RNA into the cytoplasm.
  3. The viral RNA is translated to produce the protein necessary for RNA synthesis (replication and transcription).
  4. Replication occurs in viral factories. A dsRNA genome is synthesized from the genomic ssRNA(+).
  5. The dsRNA genome is transcribed/replicated thereby providing viral mRNAs/new ssRNA(+) genomes.
  6. The RdRp recognizes an internal subgenomic promoter on the negative-sense RNA to transcribe the 3'co-terminal subgenomic RNA that will generate the capsid protein.
  7. Assembly of new virus particles.

Matching UniProtKB/Swiss-Prot entries

(all links/actions below point to website)

2 entries grouped by protein

1 entry

Putative movement protein

Maize rayado fino virus (isolate Costa Rica/Guapiles) (MRFV) reference strain

1 entry

Genome polyprotein

Maize rayado fino virus (isolate Costa Rica/Guapiles) (MRFV) reference strain
These structures were created with the help of Colabfold by Jason Nomburg, Nathan Price and Jennifer Doudna (ModelArchive).

Grapevine Syrah virus 1 taxid:630199

Protein ModelArchive
Putative movement protein ma-jd-viral-52489

Switchgrass mosaic virus taxid:1027869

Protein ModelArchive
Movement protein ma-jd-viral-34434
Movement protein ma-jd-viral-63368