| SCOP superfamily ID |
superfamiily description |
corresponding fold description |
| a.103.1 | Citrate synthase | Citrate synthase multihelical; consists of two all-alpha domains |
| a.146.1 | Telomeric repeat binding factor (TRF) dimerisation domain | Telomeric repeat binding factor (TRF) dimerisation domain multihelical; can be divided into an alpha-alpha superhelix domain and a long alpha-hairpin dimerization domain |
| a.24.13 | Domain of the SRP/SRP receptor G-proteins | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| d.144.1 | Protein kinase-like (PK-like) shares functional and structural similarities with the ATP-grasp fold and PIPK ! | Protein kinase-like (PK-like) consists of two alpha+beta domains, C-terminal domain is mostly alpha helical |
| a.80.1 | post-AAA+ oligomerization domain-like associated with N-terminal domain from the AAA+ family of P-loop hydrolases ! | post-AAA+ oligomerization domain-like core: 5 helices: bundle |
| a.24.4 | Hemerythrin-like | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| e.75.1 | flu NP-like | Flu NP-like consists of alpha+beta and all-alpha domains; biological unit is a trimer |
| a.91.1 | Regulator of G-protein signaling, RGS | Regulator of G-protein signaling, RGS multihelical; consists of two all-alpha subdomains ! contains a 4-helical bundle with left-handed twist and up-and-down topology |
| a.24.5 | TMV-like viral coat proteins | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.39.1 | EF-hand Duplication: consists of two EF-hand units: each is made of two helices connected with calcium-binding loop ! | EF Hand-like core: 4 helices; array of 2 hairpins, opened |
| a.128.1 | Terpenoid synthases duplication: two metal-binding sites are related by a pseudo dyad that also relates helices C-F to helices G-J ! | Terpenoid synthases multihelical; core: 8 helices (C-J) are arranged in 2 parallel layers |
| a.24.28 | VPS28 C-terminal domain-like | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.21 | RecG, N-terminal domain | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.285.1 | MtlR-like | MtlR-like multihelical; 8-helical up-and-down bundle |
| a.24.20 | Colicin D immunity protein | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.10 | Histidine-containing phosphotransfer domain, HPT domain contains additional, fifth helix at the N-terminus ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.121.1 | Tetracyclin repressor-like, C-terminal domain | Tetracyclin repressor-like, C-terminal domain multihelical; interlocked (homo)dimer |
| a.268.1 | PTPA-like | PTPA-like multihelical |
| f.40.1 | V-type ATP synthase subunit C duplication: consists of three similar structural parts ! | V-type ATP synthase subunit C 9 transmembrane helices |
| a.24.3 | Cytochromes Heme-containing proteins ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| e.44.1 | 2-methylcitrate dehydratase PrpD | 2-methylcitrate dehydratase PrpD consists of an all-alpha and alpha+beta domains |
| a.24.7 | FKBP12-rapamycin-binding domain of FKBP-rapamycin-associated protein (FRAP) | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.129.1 | GroEL equatorial domain-like duplication: two 4-helical subdomains are related by a pseudo dyad passing through the ATP-binding site ! | GroEL equatorial domain-like multihelical; 8 helices arranged in 2 parallel layers |
| a.24.16 | Nucleotidyltransferase substrate binding subunit/domain | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.24 | Domain from hypothetical 2610208m17rik protein | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.26 | YppE-like flattened bundle at one end with helices 2 and coming in contact and separating helices 1 and 3 ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.73.1 | Retrovirus capsid protein, N-terminal core domain | Retrovirus capsid protein, N-terminal core domain core: 5 helices; bundle |
| a.24.19 | Flagellar export chaperone FliS can form closed, open and helix-swapped bundles ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| f.13.1 | Family A G protein-coupled receptor-like | Family A G protein-coupled receptor-like core: up-and-down bundle of seven transmembrane helices tilted 20 degrees with respect to the plane of the membrane |
| a.257.1 | SipA N-terminal domain-like | SipA N-terminal domain-like multihelical; bundle; the last helix is buried inside the bundle |
| a.78.1 | GntR ligand-binding domain-like | GntR ligand-binding domain-like core: 6 helices: closed bundle; greek-key; internal pseudo twofold symmetry |
| d.314.1 | PUG domain-like | PUG domain-like alpha(2)-beta-alpha(2)-beta(2)-alpha; cluster of helices with a small antiparallel beta-sheet on one side; order 132; topological similarity to the fold of an extended R3H domain (PDB 1whr) |
| f.49.1 | Proton glutamate symport protein | Proton glutamate symport protein multihelical membrane protein; partial structural duplication in the C-terminal region; oligomeric state: trimer |
| d.379.1 | Taf5 N-terminal domain-like | Taf5 N-terminal domain-like multihelical cluster with a C-terminal beta-alpha(2)-beta motif; one central buried helix; parallel beta-ribbon |
| a.265.1 | Fic-like | Fic-like multihelical; one central helix is surrounded by seven helices |
| f.36.1 | Neurotransmitter-gated ion-channel transmembrane pore | Neurotransmitter-gated ion-channel transmembrane pore heteropentameric transmembrane alpha-helical protein; 4 transmembrane helices per subunit |
| a.235.1 | ATP-dependent DNA ligase DNA-binding domain | ATP-dependent DNA ligase DNA-binding domain multihelical; duplication: contains two intertwined structural repeats related by pseudo twofold symmetry |
| a.118.5 | Bacterial muramidases | alpha-alpha superhelix multihelical; 2 (curved) layers: alpha/alpha; right-handed superhelix |
| a.113.1 | DNA repair protein MutS, domain III | DNA repair protein MutS, domain III multihelical; consists of 2 all-alpha subdomains |
| a.28.1 | ACP-like | Acyl carrier protein-like 4 helices, bundle; helix 3 is shorter than others; up-and-down |
| a.95.1 | Influenza virus matrix protein M1 superficially similar to membrane translocation domains ! | Influenza virus matrix protein M1 multihelical; consists of two different all-alpha subdomains, 4 helices each |
| a.24.9 | alpha-catenin/vinculin-like | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.17 | Group V grass pollen allergen | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.97.1 | An anticodon-binding domain of class I aminoacyl-tRNA synthetases | An anticodon-binding domain of class I aminoacyl-tRNA synthetases multihelical; consists of two all-alpha domains |
| a.244.1 | EF2947-like | EF2947-like 4 helices; "diamond" array; duplication: N-terminal and C-terminal pairs of helices are related by pseudo dyad |
| a.24.11 | Bacterial GAP domain contains extra helices in the loops at one end of the bundle ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.24.18 | Oxygen-evolving enhancer protein 3, | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.195.1 | YutG-like | YutG-like core: 6 helices; bundle; one central helix is surrounded by 5 others |
| a.126.1 | Serum albumin-like | Serum albumin-like multihelical; one domain consists of two similar disulfide-linked subdomains |
| f.21.1 | Transmembrane di-heme cytochromes Three of the four heme-ligands are conserved between the two families; both heme groups bind similarly but not identically ! | Heme-binding four-helical bundle core: four transmembrane helices, up-and-down bundle, binds one or two heme groups in between the helices |
| a.79.1 | NusB-like | NusB-like 6 helices: bundle; one central helix is surrounded by 5 others |
| a.24.29 | TM1646-like | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| f.44.1 | Ammonium transporter | Ammonium transporter 11 transmembrane helices; duplication: consist of 2 structural repeats of five helices each plus extra C-terminal helix |
| a.28.2 | Colicin E immunity proteins | Acyl carrier protein-like 4 helices, bundle; helix 3 is shorter than others; up-and-down |
| a.74.1 | Cyclin-like duplication: consists of two domains of this fold ! | Cyclin-like core: 5 helices; one helix is surrounded by the others |
| a.295.1 | AGR C 984p-like | AGR C 984p-like multihelical, consists of two subdomains; duplication: there are two 5-helical structural repeats, one in each subdomain |
| a.88.1 | LigA subunit of an aromatic-ring-opening dioxygenase LigAB | LigA subunit of an aromatic-ring-opening dioxygenase LigAB multihelical; contains compact array of 6 short helices |
| a.24.15 | FAD-dependent thiol oxidase | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.185.1 | Gametocyte protein Pfg27 duplication: contains two structural repeats of four helices each ! | Gametocyte protein Pfg27 multihelical; bundle |
| e.58.1 | Viral ssDNA binding protein | Viral ssDNA binding protein 2 domains; d1: [large alpha+beta domain subdivided into the 'head', 'neck' and 'shoulders' regions; in the 'neck', there is an OB-fold interrupted by large insertions]; d2: [all-alpha, 6 helices; orthogonal array] |
| a.246.3 | FLJ32549 domain-like | Hyaluronidase domain-like 5 helices; bundle, closed, left-handed twist; up-and-down (meander) topology |
| a.296.1 | PMT central region-like | PMT central region-like multihelical; comprises two four-helical bundles of different topologies and an irregular helical array packed against a small beta-sheet |
| d.228.1 | Replication modulator SeqA, C-terminal DNA-binding domain | Replication modulator SeqA, C-terminal DNA-binding domain consists of seven alpha-helices and three-stranded beta-sheet |
| f.51.1 | Rhomboid-like | Rhomboid-like 6 transmembrane helices |
| f.25.1 | Cytochrome c oxidase subunit III-like | Cytochrome c oxidase subunit III-like core: 7 transmembrane helices organized into two bundles, one formed by the first two helices and the other by the rest |
| f.38.1 | MFS general substrate transporter | MFS general substrate transporter 12 transmembrane helices; duplication: the N- and C-terminal halves are structurally similar |
| f.58.1 | MetI-like | MetI-like core: 5 transmembrane helices; flattened bundle |
| a.148.1 | Arp2/3 complex 21 kDa subunit ARPC3 | Arp2/3 complex 21 kDa subunit ARPC3 5 helices; one helix is surrounded by the others |
| a.29.3 | Acyl-CoA dehydrogenase C-terminal domain-like multidomain flavoprotein; N-terminal domain is all-alpha; the middle domain is open (5,8) barrel ! | Bromodomain-like 4 helices; bundle; minor mirror variant of up-and-down topology |
| e.68.1 | YacF-like probable biological unit is a dimer | YacF-like 2 domains; d1: kinked four-helical bundle, inserted in d2: beta-sandwich of 7 strands in two sheets |
| a.81.1 | N-terminal domain of DnaB helicase | N-terminal domain of DnaB helicase 6 helices: array |
| a.119.1 | Lipoxigenase | Lipoxigenase multihelical ! large nearly all-alpha domain |
| a.24.14 | FAT domain of focal adhesion kinase | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.127.1 | L-aspartase-like | L-aspartase-like multihelical, consists of three all-alpha domains |
| a.290.1 | PSPTO4464-like | PSPTO4464-like multihelical; consists of two subdomains at the ends of a long connecting helix |
| a.250.1 | IpaD-like | IpaD-like 6 helices; bundle, up-and-down; can be divided into two four-helical bundles sharing two helices (3 and 6), which are twice longer than the rest |
| a.24.2 | Aspartate receptor, ligand-binding domain | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.70.1 | N-terminal domain of the delta subunit of the F1F0-ATP synthase | ATPD N-terminal domain-like core: 5 helices; bundle |
| a.70.2 | AF1862-like probable biological unit is a hexamer | ATPD N-terminal domain-like core: 5 helices; bundle |
| a.7.12 | PhoU-like duplication: consists of two sequence each repeats adopting this fold ! | Spectrin repeat-like 3 helices; bundle, closed, left-handed twist; up-and-down |
| a.24.25 | TrmE connector domain | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.288.1 | UraD-Like | UraD-like multihelical; irregular array of long and short helices |
| a.267.1 | Topoisomerase V catalytic domain-like | Topoisomerase V catalytic domain-like multihelical; irregular array; contains small amount of beta-structure and a 3-helical bundle with a variant homeofomain-like fold and HTH motif (scop_cf 46688) |
| a.24.12 | Outer surface protein C (OspC) | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| f.54.1 | SNF-like | SNF-like 12 transmembrane helices; duplication: consists of two structurally similar halves |
| c.7.1 | PFL-like glycyl radical enzymes duplication: the N- and C-terminal halves have similar topologies ! | PFL-like glycyl radical enzymes contains: barrel, closed; n=10, S=10; accommodates a hairpin loop inside the barrel |
| a.215.1 | A middle domain of Talin 1 | A middle domain of Talin 1 5 helices; bundle, closed, left-handed twist; helices 2-5 adopt the Four-helical up-and-down bundle fold (scop_cf 47161) |
| a.279.1 | Jann4075-like | Jann4075-like core: 5 helices; the C-terminal helix is surrounded by the others; similarity to some EF-hand domains |
| a.24.22 | Nickel-containing superoxide dismutase, NiSOD | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| f.24.1 | Cytochrome c oxidase subunit I-like | Cytochrome c oxidase subunit I-like 12 transmembrane helices in an approximate threefold rotational symmetric arrangement |
| e.42.1 | L-A virus major coat protein | L-A virus major coat protein large protein without apparent domain division |
| e.40.1 | Cullin homology domain | Cullin homology domain 3 domains: (1) 4-helical bundle; (2) alpha+beta; (3) "winged helix"-like |
| f.1.2 | Diphtheria toxin, middle domain | Toxins' membrane translocation domains multi-helical domains of various folds which is thought to unfold in the membrane |
| e.47.1 | 39 kda initiator binding protein, IBP39, C-terminal domains | 39 kda initiator binding protein, IBP39, C-terminal domains 2 closely associated domains: (1) all-alpha, EF-hand like; (2) alpha+beta, Frataxin-like |
| e.48.1 | Major capsid protein VP5 | Major capsid protein VP5 large protein without apparent domain division |
| a.198.1 | YcfC-like | YcfC-like multihelical; contains two buried central helices |
| f.57.1 | MgtE membrane domain-like homodimer, swapped with the N-terminal helices | MgtE membrane domain-like 5 transmembrane helices; bundle, right-handed twist |
| f.18.1 | F1F0 ATP synthase subunit A | F1F0 ATP synthase subunit A core: up-and-down bundle of four transmembrane helices |
| a.24.23 | Mannose-6-phosphate receptor binding protein 1 (Tip47), C-terminal domain contains extra alpha+beta subdomain formed by the N- and C-termini. ! | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.154.1 | Variable surface antigen VlsE | Variable surface antigen VlsE multihelical; consists of two all-alpha subdomains; contains a 4-helical bundle with left-handed twist and up-and-down topology |
| a.24.8 | Proteasome activator | Four-helical up-and-down bundle core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down |
| a.117.1 | Ras GEF | Ras GEF multihelical |
| f.41.1 | Preprotein translocase SecY subunit duplication: consists of two similar structural parts ! | Preprotein translocase SecY subunit 10 transmembrane helices forming of a gated channel |
| f.5.1 | Outer membrane efflux proteins (OEP) | Outer membrane efflux proteins (OEP) subunit fold contains tandem repeat of alpha-beta hairpin-alpha(2) motif ! trimeric fold contains barrel (n=12, S=18) formed by beta-hairpins, two from each subunit, and a bundle of helices with a channel running through it |