Lineage for Family b.121.2.3: Major capsid protein vp54

1. Root: SCOP 1.67

2. Class b: All beta proteins [48724] (141 folds)

3. Fold 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. Superfamily b.121.2: Group II dsDNA viruses VP [49749] (3 families) duplication: consists of two domains of this fold packed together like the nucleoplasmin subunits trimeric; in the trimers, the domains are arranged around pseudo six-fold axis

5. Family b.121.2.3: Major capsid protein vp54 [82013] (1 protein)