Non-enveloped icosahedral capsid, about 30-35 nm in diameter. Presumably T=1 icosahedral symmetry but has not been determined. The two genomic segments are encapsidated separately.


Segmented dsRNA linear genome: 2 segments encoding potentially for 2 proteins. Segments are about 2.1 kb each, total size about 4 kb.


Each genomic segment is monocistronic.



  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 during cell division, sporogenesis or cell fusion.

Matching UniProtKB/Swiss-Prot entries

2 entries grouped by strain (browse by keywords)

2 entries

Cryptosporidium parvum virus 1 (strain KSU-1) reference strain

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CAPSD_CPVKSCapsid protein (CP) (Coat protein)
RDRP_CPVKSRNA-directed RNA polymerase (EC