Lineage for Fold b.19: Viral protein domain
- Root: SCOPe 2.01
Class b: All beta proteins [48724] (174 folds) 
Fold b.19: Viral protein domain [49817] (1 superfamily)
sandwich; 9 strands in 2 sheets; jelly-roll; form trimers
Superfamily:
b.19.1: Viral protein domain [49818] (3 families) 
forms homotrimers
More info for Fold b.19: Viral protein domain
Timeline for Fold b.19: Viral protein domain:
- Fold b.19: Viral protein domain first appeared (with stable ids) in SCOP 1.55, called Fold b.19: Segmented RNA-genome viruses' proteins
- Fold b.19: Viral protein domain appears in SCOP 1.75
- Fold b.19: Viral protein domain appears in SCOPe 2.02
- Fold b.19: Viral protein domain appears in the current release, SCOPe 2.08