Tymovirus

VIRION

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

GENOME

Linear, C-rich, ssRNA(+) genome of 6.3 kb. The 3’-terminus has a tRNA-like structure.

GENE EXPRESSION

The virion RNA is infectious and serves as both the genome and viral messenger RNA. The ORF1 encodes a polyprotein whichis expressed by leaky scanning. The capsid protein is translated from a subgenomic RNA.

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 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.
  8. Movement protein allows cell-to-cell movement.

Host-virus interaction

Modulation of host ubiquitin pathway by virus

Turnip yellow mosaic virus 98K replication protein counteracts degradation of the viral RNA-dependent RNA polymerase (RdRp) by host ubiquitin-proteasome system. The 98K replication protein mediates deubiquitylation of RdRp leading to its stabilization .

Matching UniProtKB/Swiss-Prot entries

22 entries grouped by strain (browse by keywords)

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

3 entries

Turnip yellow mosaic virus reference strain

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COAT_TYMVCoat protein (Virion protein)
P69_TYMV69 kDa protein (p69)
POLR_TYMVRNA replicase polyprotein (206 kDa polyprotein)

3 entries

Eggplant mosaic virus

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COAT_EPMVCoat protein (Virion protein)
P69_EPMV70 kDa protein
POLR_EPMVRNA replicase polyprotein (EC 2.7.7.48)

3 entries

Erysimum latent virus (ELV)

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COAT_ELVCoat protein (Virion protein)
POLR_ELVRNA replicase polyprotein (EC 2.7.7.48)
Y48K_ELVUncharacterized 48 kDa protein

3 entries

Ononis yellow mosaic virus

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COAT_OYMVCoat protein (Virion protein)
P69_OYMV66 kDa protein
POLR_OYMVRNA replicase polyprotein (EC 2.7.7.48)

3 entries

Turnip yellow mosaic virus (isolate Australia)

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COAT_TYMVACoat protein (Virion protein)
P69_TYMVA69 kDa protein (p69)
POLR_TYMVARNA replicase polyprotein (EC 2.7.7.48)

2 entries

Kennedya yellow mosaic virus (strain Jervis bay) (KYMV)

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COAT_KYMVJCoat protein (Virion protein)
POLR_KYMVJRNA replicase polyprotein (EC 2.7.7.48)

2 entries

Turnip yellow mosaic virus (isolate TYMC)

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P69_TYMVC69 kDa protein (p69)
POLR_TYMVCRNA replicase polyprotein (EC 2.7.7.48)

1 entry

Belladonna mottle virus (BMDV)


COAT_BMDVCoat protein (Virion protein)

1 entry

Cacao yellow mosaic virus


COAT_CAYMVCoat protein (Virion protein)

1 entry

Physalis mottle virus (PhMV) (Belladonna mottle virus-Iowa)


COAT_PHMVCoat protein (Virion protein)