Virtovirus

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

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

GENOME

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.

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

4 entries grouped by strain (browse by keywords)

2 entries

Satellite tobacco mosaic virus (STMV)

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COAT_STMV Coat protein
V07K_STMV 6.8 kDa protein

1 entry

Satellite tobacco necrosis virus 1

COAT_STNV1 Coat protein

1 entry

Satellite tobacco necrosis virus 2

COAT_STNV2 Coat protein