Chrysoviridae (taxid:249310)



Non-enveloped capsid with T=1 icosahedral symmetry and composed of 60 protein subunit monomers. However, each subunit is thought to contain two genetically duplicated domains, and these 120 putative domains might therefore adopt a pseudo-T=2 structure. The capsid is about 35-40 nm in diameter. The four genomic segments are encapsidated separately.



Segmented linear dsRNA genome about 12.5 kb: 4 segments encoding for 4 proteins.


Each genomic segment encodes for a single protein. Translation is initiated on a unique internal ribosome entry site (IRES) element situated at the 5'-UTR.




  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, in which they are transcribed to give RNA (-) molecules with which they become base-paired to produce dsRNA genomes.
  4. Mature virions are transmitted to new cell by cytoplasmic exchange, sporogenesis or Hyphal anastomosis.

Matching UniProtKB/Swiss-Prot entries

(all links/actions below point to website)

4 entries grouped by protein

1 entry

Capsid protein (CP) (Coat protein)

Penicillium chrysogenum virus (isolate Caston/2003) (PcV) reference strain

1 entry

Uncharacterized protein p3

Penicillium chrysogenum virus (isolate Caston/2003) (PcV) reference strain

1 entry

Uncharacterized protein p4

Penicillium chrysogenum virus (isolate Caston/2003) (PcV) reference strain

1 entry

RNA-directed RNA polymerase (EC

Penicillium chrysogenum virus (isolate Caston/2003) (PcV) reference strain
These structures were created with the help of Colabfold by Jason Nomburg, Nathan Price and Jennifer Doudna (ModelArchive).

Alphachrysovirus cerasi taxid:284687

Protein ModelArchive
Putative coat protein ma-jd-viral-11748
Putative protease ma-jd-viral-21412
RNA-directed RNA polymerase (EC ma-jd-viral-19872
Uncharacterized protein ma-jd-viral-52117

Fusarium oxysporum f. sp. dianthi mycovirus 1 taxid:1679238

Protein ModelArchive
Putative coat protein ma-jd-viral-40136
RNA-directed RNA polymerase (EC ma-jd-viral-18899
Uncharacterized protein ma-jd-viral-21443
Uncharacterized protein ma-jd-viral-40073

Isaria javanica chrysovirus 1 taxid:1930960

Protein ModelArchive
Capsid protein ma-jd-viral-11746
Putative protease ma-jd-viral-21416
RNA-directed RNA polymerase (EC ma-jd-viral-19867
Uncharacterized protein ma-jd-viral-18773

Magnaporthe oryzae chrysovirus 1 taxid:764348

Protein ModelArchive
Coat protein ma-jd-viral-21424
Coat protein ma-jd-viral-21426
Coat protein ma-jd-viral-45679
Coat protein ma-jd-viral-45680
Coat protein ma-jd-viral-40133
Coat protein ma-jd-viral-40140
RNA-directed RNA polymerase (EC ma-jd-viral-18897
RNA-directed RNA polymerase (EC ma-jd-viral-18902
Uncharacterized protein ma-jd-viral-44820

Penicillium chrysogenum virus (isolate Caston/2003) taxid:654932

Protein ModelArchive
Capsid protein (CP) (Coat protein) ma-jd-viral-11744
RNA-directed RNA polymerase (EC ma-jd-viral-19874
Uncharacterized protein p3 ma-jd-viral-18774
Uncharacterized protein p4 ma-jd-viral-21411

Penicillium janczewskii chrysovirus 1 taxid:1755792

Protein ModelArchive
70 kDa protein ma-jd-viral-21428
80 kDa protein ma-jd-viral-55903
84 kDa protein ma-jd-viral-40134
RNA-directed RNA polymerase (EC ma-jd-viral-18895