|  | Class f: Membrane and cell surface proteins and peptides [56835] (69 folds) | 
|  | Fold f.23: Single transmembrane helix [81407] (42 superfamilies) not a true fold annotated by the SCOP(e) curators as 'not a true fold' | 
|  | Superfamily f.23.4: Mitochondrial cytochrome c oxidase subunit VIIa [81419] (1 family)  automatically mapped to Pfam PF02238 | 
|  | f.23.4.1: Mitochondrial cytochrome c oxidase subunit VIIa [81418] (2 proteins) | 
Timeline for Superfamily f.23.4: Mitochondrial cytochrome c oxidase subunit VIIa: