Lineage for Superfamily b.121.4: Positive stranded ssRNA viruses

  1. Root: SCOP 1.75
  2. 781541Class b: All beta proteins [48724] (174 folds)
  3. 812424Fold b.121: Nucleoplasmin-like/VP (viral coat and capsid proteins) [88632] (7 superfamilies)
    sandwich; 8 strands in 2 sheets; jelly-roll; some members can have additional 1-2 strands
    characteristic interaction between the domains of this fold allows the formation of five-fold and pseudo six-fold assemblies
  4. 812561Superfamily b.121.4: Positive stranded ssRNA viruses [88633] (9 families) (S)

Families:

  1. 812562b.121.4.1: Picornaviridae-like VP (VP1, VP2, VP3 and VP4) [88634] (9 proteins)
    the order of the chains N-VP0-VP3-VP1-C is as in the polyprotein; VP0 is cleaved later upon capsid assembly to VP4 and VP2
    there is a different order in the shuffled genome of insect picorna-like proteins (Cricket paralysis virus)
  2. 812839b.121.4.2: Comoviridae-like VP [88636] (2 proteins)
    duplication: mature coat protein consists of three similar domains that can be in a single chain or in two separate chains
  3. 812863b.121.4.3: Caliciviridae-like VP [88637] (1 protein)
  4. 812869b.121.4.4: Nodaviridae-like VP [88638] (1 protein)
  5. 812883b.121.4.5: Bromoviridae-like VP [88639] (1 protein)
  6. 812931b.121.4.6: Tymoviridae-like VP [88641] (1 protein)
  7. 812951b.121.4.7: Tombusviridae-like VP [88643] (4 proteins)
  8. 812990b.121.4.8: Tetraviridae-like VP [101568] (1 protein)
  9. 812997b.121.4.9: Birnaviridae-like VP [141109] (1 protein)
    dsRNA virus but unlike the other dsRNA viruses has a genomic arrangement and genomic replication strategy similar to +sRNA viruses; includes Pfam PF01766; Birnavirus VP2 protein

More info for Superfamily b.121.4: Positive stranded ssRNA viruses

Timeline for Superfamily b.121.4: Positive stranded ssRNA viruses: