SCOPe 2.07: Superfamily a.25.4: PE/PPE dimer-like

Lineage for Superfamily a.25.4: PE/PPE dimer-like

1. Root: SCOPe 2.07

2. Class a: All alpha proteins [46456] (289 folds)

3. Fold a.25: Ferritin-like [47239] (6 superfamilies)
   core: 4 helices; bundle, closed, left-handed twist; 1 crossover connection

4. Superfamily a.25.4: PE/PPE dimer-like [140459] (2 families)
   (hetero)dimer of alpha-hairpin subunits similar to that of the half-ferritin family; no bound metals inside the bundle

Families:

1. a.25.4.1: PE [140460] (2 proteins)
   Pfam PF00934; pairs with with the N-terminal hairpin of PPE

2. a.25.4.2: PPE [140463] (2 proteins)
   Pfam PF00823; contains extra C-terminal alpha-hairpin, unlike the PE family subunit

More info for Superfamily a.25.4: PE/PPE dimer-like

Timeline for Superfamily a.25.4: PE/PPE dimer-like:

• Superfamily a.25.4: PE/PPE dimer-like first appeared in SCOP 1.73
  
• Superfamily a.25.4: PE/PPE dimer-like appears in SCOPe 2.06
  
• Superfamily a.25.4: PE/PPE dimer-like appears in the current release, SCOPe 2.08