Virtovirus (taxid:1925802)

Satellite virus: The virus needs a helper virus for viral replication. Infection requires host cell to be co-infected with a virus from the genus Tobamovirus.

VIRION

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Non-enveloped, spherical, T=1 icosahedral capsid, about 17 nm in diameter. Sixty copies of the capsid protein form the capsid.
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GENOME

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Linear, ssRNA(+) genome of about 1 kb, which lacks a cap structure and a poly(A)tail.

GENE EXPRESSION

The virion RNA is infectious and serves as both the genome and viral messenger RNA. Encodes one capsid protein and an unknown ORF.

ENZYMES

  • None

REPLICATION

CYTOPLASMIC

  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 capsid protein.
  4. Replication takes place in cytoplasmic 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. Virus assembly.
  7. Virus release.

Matching UniProtKB/Swiss-Prot entries

(all links/actions below point to uniprot.org website)

2 entries grouped by protein

1 entry

Coat protein

COAT_STMV
Satellite tobacco mosaic virus (STMV)

1 entry

6.8 kDa protein

V07K_STMV
Satellite tobacco mosaic virus (STMV)
These structures were created with the help of Colabfold by Jason Nomburg, Nathan Price and Jennifer Doudna (ModelArchive).

Grapevine satellite virus taxid:1343493

Protein ModelArchive
ORF1 ma-jd-viral-27116
ORF2 ma-jd-viral-44206