Idaeovirus (taxid:39760)

VIRION

image

Non-enveloped, isometric (icosahedral) but slightly flattened, of three types but similar in size (33 nm). Three RNA components, 2 genomic and 1 subgenomic (sgRNA) are distributed among the particles which can therefore be separated on their densities.

GENOME

image

Segmented, tripartite, linear ssRNA(+) genome composed of RNA1=5.4 kb, RNA2=2.2 kb and sgRNA3=1 kb. The 3'-terminal regions of the RNAs may form a stem loop structure, and is not polyadenylated.

GENE EXPRESSION

The virion RNA is infectious and serves as both the genome and viral messenger RNA. RNA1 has a single open reading frame, RNA2 has two open reading frames and RNA3 is the encapsidated subgenomic of RNA2 expressing the capsid protein.

ENZYMES

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 proteins necessary for RNA synthesis (replication and transcription).
  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. Expression of the subgenomic RNA (sgRNA3).
  7. Virus assembly, each segment is encapsidated.
  8. Virus release.

Matching UniProtKB/Swiss-Prot entries

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

4 entries grouped by protein

1 entry

Capsid protein (CP) (Coat protein)

CAPSD_RBDVR
Raspberry bushy dwarf virus (isolate Malling Jewel raspberry/R15) (RBDV) reference strain

1 entry

Coat protein

COAT_RBDV
Raspberry bushy dwarf virus (RBDV)

1 entry

Putative movement protein

MVP_RBDVR
Raspberry bushy dwarf virus (isolate Malling Jewel raspberry/R15) (RBDV) reference strain

1 entry

Methyltransferase/helicase/RNA-directed RNA polymerase (EC 2.1.1.-) (EC 2.7.7.48) (EC 3.6.4.13)

RDRP_RBDVR
Raspberry bushy dwarf virus (isolate Malling Jewel raspberry/R15) (RBDV) reference strain