![]() | Class f: Membrane and cell surface proteins and peptides [56835] (34 folds) |
![]() | Fold f.21: Heme-binding four-helical bundle [81344] (2 superfamilies) core: four transmembrane helices, up-and-down bundle, binds one or two heme groups in between the helices |
![]() | Superfamily f.21.1: Transmembrane di-heme cytochromes [81342] (2 families) ![]() Three of the four heme-ligands are conserved between the two families; both heme groups bind similarly but not identically |
![]() | Family f.21.1.2: Cytochrome b of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [81642] (1 protein) a part (domain) of a larger mitochondrial cytochrome b subunit, separate subunit in plants and cyanobacteria |
![]() | Protein Mitochondrial cytochrome b subunit, N-terminal domain [81641] (3 species) also includes extra transmembrane (linker) helix absent in plants and cyanobacteria subunits |
![]() | Species Chicken (Gallus gallus) [TaxId:9031] [81639] (3 PDB entries) |
Timeline for Species Chicken (Gallus gallus) [TaxId:9031] from f.21.1.2 Mitochondrial cytochrome b subunit, N-terminal domain: