|Class f: Membrane and cell surface proteins and peptides  (69 folds)|
|Fold f.4: Transmembrane beta-barrels  (7 superfamilies)|
not a true fold, gathers together transmembrane barrels of different (n,S)
annotated by the SCOP(e) curators as 'not a true fold'
|Superfamily f.4.5: Autotransporter  (1 family) |
forms (12,14) barrel; contains a long alpha-helix running along the barrel axis
automatically mapped to Pfam PF03797