Plectroviridae (taxid:2732098)

VIRION

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Non-enveloped, rod of filaments of 7-15nm in diameter and 230 to 2000nm in length. Helical capsid with adsorption proteins on one end.

GENOME

Circular, ssDNA genome (+) of 4.5 to 8kb encoding for 4 to 13 proteins. Replication occurs via dsDNA intermediate and rolling circle (Plectrovirus, Suturavirus) or by replicative transposition (Vespertilliovirus).

GENE EXPRESSION

Each gene is transcribed by host cellular machinery, via a specific promoter. Some genes end by a transcription terminator.

ENZYMES

REPLICATION

CYTOPLASMIC

  1. Viral protein mediates binding to host membrane.
  2. The proteins of the capsid perform the injection of the viral DNA through bacterial membranes into cell cytoplasm.
  3. Host polymerase convert the (+)ssDNA viral genome into a covalently closed dsDNA called replicative form DNA (RF).
  4. dsDNA transcription by host RNA polymerase gives rise to viral mRNAs.
  5. (+) strand replication occurs by rolling circle.
  6. New (+)ssDNA genomes are converted into new RF molecules, and further transcription occurs.
  7. Viral proteins interaction with ssDNA genome trigger the assembly of the viral capsid.
  8. New virions are secreted from host cell.

Matching UniProtKB/Swiss-Prot entries

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

25 entries grouped by strain

13 entries

Spiroplasma virus SpV1-C74 (SpV1) reference strain

Select_allDeselect_all
CAPSD_SPV1C Putative capsid protein ORF9
INTG_SPV1C Putative integrase ORF3
ORF5_SPV1C Uncharacterized protein ORF5
ORF15_SPV1C Uncharacterized protein ORF15
ORF1_SPV1C Uncharacterized protein ORF1
ORF14_SPV1C Uncharacterized protein ORF14
ORF12_SPV1C Uncharacterized protein ORF12
ORF7_SPV1C Uncharacterized protein ORF7
ORF4_SPV1C Uncharacterized protein ORF4
ORF13_SPV1C Uncharacterized protein ORF13
ORF11_SPV1C Uncharacterized protein ORF11
ORF10_SPV1C Uncharacterized protein ORF10
ORF2_SPV1C Uncharacterized protein ORF2

12 entries

Spiroplasma virus SpV1-R8A2 B (SpV1) (Spiroplasma virus 1) reference strain

Select_allDeselect_all
INTG_SPV1R Putative integrase ORF3 (Gene 3 protein)
CAPSD_SPV1R Putative capsid protein ORF9 (Gene 9 protein)
ORF1_SPV1R Uncharacterized protein ORF1 (Gene 1 protein)
ORF2_SPV1R Uncharacterized protein ORF2 (Gene 2 protein)
ORF4_SPV1R Uncharacterized protein ORF4 (Gene 4 protein)
ORF5_SPV1R Uncharacterized protein ORF5 (Gene 5 protein)
ORF6_SPV1R Uncharacterized protein ORF6 (Gene 6 protein)
ORF7_SPV1R Uncharacterized protein ORF7 (Gene 7 protein)
ORF8_SPV1R Uncharacterized protein ORF8 (Gene 8 protein)
ORF10_SPV1R Uncharacterized protein ORF10 (Gene 10 protein)
ORF11_SPV1R Uncharacterized protein ORF11 (Gene 11 protein)
ORF12_SPV1R Uncharacterized protein ORF12 (Gene 12 protein)