SCOP 1.75: Fold f.4: Transmembrane beta-barrels

Lineage for Fold f.4: Transmembrane beta-barrels

1. Root: SCOP 1.75

2. Class f: Membrane and cell surface proteins and peptides [56835] (58 folds)

3. Fold f.4: Transmembrane beta-barrels [56924] (6 superfamilies)
   not a true fold, gathers together transmembrane barrels of different (n,S)

Superfamilies:

1. f.4.1: OMPA-like [56925] (4 families)
   forms (8,10) barrel

2. f.4.2: Outer membrane phospholipase A (OMPLA) [56931] (1 family)
   forms (12,16) barrel

3. f.4.3: Porins [56935] (4 families)

4. f.4.4: OMPT-like [69917] (2 families)
   forms (10,12) barrel

5. f.4.5: Autotransporter [103515] (1 family)
   forms (12,14) barrel; contains a long alpha-helix running along the barrel axis

6. f.4.6: Tsx-like channel [111364] (1 family)
   forms (12,16) barrel

More info for Fold f.4: Transmembrane beta-barrels

Timeline for Fold f.4: Transmembrane beta-barrels:

• Fold f.4: Transmembrane beta-barrels first appeared (with stable ids) in SCOP 1.55
  
• Fold f.4: Transmembrane beta-barrels appears in SCOP 1.73
  
• Fold f.4: Transmembrane beta-barrels appears in SCOPe 2.01
  
• Fold f.4: Transmembrane beta-barrels appears in the current release, SCOPe 2.08