Aspiviridae (taxid:568247)



Highly flexuous, naked nucleocapsids about 3 to 4 nm in diameter, forming open circles.



Segmented negative-stranded RNA linear genome
Contains 3 to 4 segments coding for up to seven proteins.


The viral RNA dependent RNA polymerase (L) binds to a promoter on each encapsidated segment, and transcribes a messenger RNA. Translational frameshift may occur on RNA-4 mRNA.




  1. Virus enters host cell either carried out by a fungus, or by insect vector: ribonucleocapsid segments are released in the cytoplasm.
  2. Transcription, viral mRNAs are capped in the cytoplasm.
  3. Replication presumably starts when enough nucleoprotein is present to encapsidate neo-synthetized antigenomes and genomes.
  4. The ribonucleocapsids newly synthetized can infect neighbour plant cells or be transported by fungus or insect to new plant.

Matching UniProtKB/Swiss-Prot entries

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11 entries grouped by strain

4 entries

Citrus psorosis virus (isolate Spain/P-121) (CPsV) (Citrus ringspot virus) reference strain

L_CPSVP RNA-directed RNA polymerase L (Protein L) (Large structural protein) (Replicase) (Transcriptase) ...
NCAP_CPSVP Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)
VP54_CPSVP Uncharacterized 54 kDa protein
VP24_CPSVP Uncharacterized 24 kDa protein

7 entries

Mirafiori lettuce virus (isolate Lettuce/Netherlands/LS301-O) (MiLV) (Mirafiori lettuce big-vein virus)

L_MILVL RNA-directed RNA polymerase L (Protein L) (Large structural protein) (Replicase) (Transcriptase) ...
NCAP_MILVL Nucleoprotein (NP) (Nucleocapsid protein) (Protein N)
VG37_MILVL Uncharacterized 37 kDa protein
VG11_MILVL Uncharacterized 10.6 kDa protein
VG55_MILVL Uncharacterized 55 kDa protein
VG10_MILVL Uncharacterized 10 kDa protein
VG25_MILVL Uncharacterized 25 kDa protein