| SCOP class : | Membrane and cell surface proteins and peptides |
| SCOP Fold : | Single transmembrane helix |
| Superfamily : | Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) |
| Family : | Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) |