Betapartitivirus

VIRION

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Non-enveloped icosahedral capsid, about 35-40 nm in diameter with a T=2* icosahedral symmetry . The two genomic segments are encapsidated separately.

GENOME

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Segmented linear dsRNA genome: 3 segments encoding potentially for 2 proteins. Segments are about 2.2, 2.1, 1.7 kb each, total size about 6 kb.

GENE EXPRESSION

Each genomic segment is monocistronic.

REPLICATION

CYTOPLASMIC

  1. Virus penetrates into the cytoplasm.
  2. Transcription of the dsRNA genome by viral polymerase occurs inside the virion, so that dsRNA is never exposed to the cytoplasm. This plus-strand transcript is used as template for translation.
  3. (+)RNAs are encapsidated in virion particle, inside which they are transcribed to give RNA (-) molecules with which they become base-paired to produce dsRNA genomes.
  4. Mature are transmitted to new cell by cytoplasmic exchange, sporogenesis or Hyphal anastomosis.

Matching UniProtKB/Swiss-Prot entries

2 entries grouped by protein (browse by keywords)

1 entry

Capsid protein (CP) (Coat protein)

CAPSD_AHV2H
Atkinsonella hypoxylon virus (isolate 2H) (AhV) reference strain

1 entry

RNA-directed RNA polymerase (EC 2.7.7.48)

RDRP_AHV2H
Atkinsonella hypoxylon virus (isolate 2H) (AhV) reference strain