| SCOP superfamily ID |
superfamiily description |
corresponding fold description |
| d.344.1 | PriA/YqbF domain associated with known or presumed DNA-binding domains; this superfamily also includes the C-terminal domain of PriA (PDB entry 1zt2) | GINS/PriA/YqbF domain beta(4)-alpha-beta; 3-stranded antiparallel beta-sheet (strands 4,1 and 5) are covered on the same side by the helix and beta hairpin of strands 2 and 3; similarity to the L9 N-domain-like fold (scop_cf 55657) and the PsaD fold (scop_sf 64243) |
| c.47.1 | Thioredoxin-like | Thioredoxin fold core: 3 layers, a/b/a; mixed beta-sheet of 4 strands, order 4312; strand 3 is antiparallel to the rest |
| d.141.1 | Ribosomal protein L6 | Ribosomal protein L6 consists of two beta-sheets and one alpha-helix packed around single core |
| c.67.1 | PLP-dependent transferases | PLP-dependent transferase-like main domain: 3 layers: a/b/a, mixed beta-sheet of 7 strands, order 3245671; strand 7 is antiparallel to the rest |
| c.77.1 | Isocitrate/Isopropylmalate dehydrogenase-like the constituent families form similar dimers ! | Isocitrate/Isopropylmalate dehydrogenase-like consists of two intertwined (sub)domains related by pseudo dyad; duplication ! 3 layers: a/b/a; single mixed beta-sheet of 10 strands, order 213A945867 (A=10); strands from 5 to 9 are antiparallel to the rest |
| d.15.2 | CAD & PB1 domains contain extra helix; similar heterodimerization modes; possibly related to the ubiquitin-like superfamily ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| c.90.1 | Tetrapyrrole methylase | Tetrapyrrole methylase consists of two non-similar domains ! Domain 1 has parallel sheet of 5 strands, order 32415 ! Domain 2 has mixed sheet of 5 strands, order 12534; strands 4 & 5 are antiparallel to the rest |
| c.45.1 | (Phosphotyrosine protein) phosphatases II share with the family I the common active site structure with a circularly permuted topology ! | (Phosphotyrosine protein) phosphatases II core: 3 layers, a/b/a; parallel beta-sheet of 4 strands, order 1423 |
| c.51.1 | Class II aaRS ABD-related | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| b.160.1 | L,D-transpeptidase catalytic domain-like | L,D-transpeptidase catalytic domain-like barrel, closed; n=8, S=10; one overside connection |
| b.60.1 | Lipocalins bind hydrophobic ligands in their interior ! | Lipocalins barrel, closed or opened; n=8, S=12; meander |
| c.55.3 | Ribonuclease H-like consists of one domain of this fold ! | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.286.1 | TrkA C-terminal domain-like | TrkA C-terminal domain-like beta-X-beta(2)-X-beta-alpha; pseudo barrel capped by helix at one end; topological similarity to the HPr-like fold |
| d.194.1 | CNF1/YfiH-like putative cysteine hydrolases | CNF1/YfiH-like putative cysteine hydrolases 4 layers: alpha/beta/beta/alpha; mixed beta sheets |
| d.58.7 | RNA-binding domain, RBD | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.89.1 | Origin of replication-binding domain, RBD-like | Origin of replication-binding domain, RBD-like alpha-beta-alpha-beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel sheet 41325 |
| d.51.1 | Eukaryotic type KH-domain (KH-domain type I) Prokaryotic and eukaryotic domains share a KH-motif but have different topologies ! | Eukaryotic type KH-domain (KH-domain type I) beta-alpha(2)-beta(2)-alpha; 2 layers: alpha/beta |
| c.55.1 | Actin-like ATPase domain duplication contains two domains of this fold ! | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.218.1 | Nucleotidyltransferase | Nucleotidyltransferase core: alpha-beta-turn-beta-X-beta-(alpha); mixed beta-sheet, order of core strands: 123 |
| d.94.1 | HPr-like | HPr-like beta-alpha-beta(2)-alpha-beta-alpha; 2 layers: a/b; antiparallel sheet 1423 |
| d.58.23 | Probable ACP-binding domain of malonyl-CoA ACP transacylase | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.131.1 | Peptidyl-tRNA hydrolase II | Peptidyl-tRNA hydrolase II 3 layers: a/b/a; mixed beta-sheet of 4 strands, order 2143, strand 4 is antiparallel to the rest |
| d.50.3 | YcfA/nrd intein domain | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| e.8.1 | DNA/RNA polymerases "palm" domain has a ferredoxin-like fold, related to that of an adenylyl cyclase domain ! | DNA/RNA polymerases divided into morphological domains including "palm", "thumb" and "fingers"; the catalytic "palm" domain is conserved to all members |
| d.110.7 | Roadblock/LC7 domain alpha-beta(2)-alpha-beta(3)-alpha; structurally most similar to the SNARE-like superfamily with a circular permutation of the terminal helices ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| d.185.1 | LuxS/MPP-like metallohydrolase Share the same "active site motif" HxxEH located in the first core helix, but differ in one of the zinc-binding residues ! | LuxS/MPP-like metallohydrolase core: beta-alpha-beta(2)-alpha(2); 2 layers: alpha/beta |
| d.86.1 | eIF4e-like | eIF4e-like beta(2)-alpha-beta(2)-alpha-beta(2)-alpha-beta-2; 2 layers: alpha/beta; antiparallel sheet: 21356478 |
| d.58.5 | GlnB-like form timeric structures with the orthogonally packed beta-sheets ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.117.1 | Amidase signature (AS) enzymes | Amidase signature (AS) enzymes possible duplication: the topologies of N- and C-terminal halves are similar; 3 layers: a/b/a; single mixed beta-sheet of 10 strands, order 213549A867 (A=10); strands from 5 to 9 are antiparallel to the rest |
| d.142.1 | Glutathione synthetase ATP-binding domain-like | ATP-grasp Consists of two subdomains with different alpha+beta folds ! shares functional and structural similarities with the PIPK and protein kinase superfamilies |
| c.62.1 | vWA-like | vWA-like core: 3 layers, a/b/a; mixed beta-sheet of 6 strands, order 321456; strand 3 is antiparallel to the rest |
| 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 |
| b.30.5 | Galactose mutarotase-like probable carbohydrate-binding domain in enzymes acting on sugars ! | Supersandwich sandwich; 18 strands in 2 sheets |
| c.91.1 | PEP carboxykinase-like | PEP carboxykinase-like contains a P-loop NTP-binding motif; mixed beta-sheet folds into a barrel-like structure with helices packed on one side |
| c.51.3 | B12-dependent dehydatase associated subunit | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| d.41.1 | CO dehydrogenase molybdoprotein N-domain-like | alpha/beta-Hammerhead core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids |
| d.58.3 | Protease propeptides/inhibitors | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.58.10 | Acylphosphatase/BLUF domain-like | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.15.1 | Ubiquitin-like | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.250.1 | Folate-binding domain some topological similarity to Formylmethanofuran:tetrahydromethanopterin formyltransferase ! | Folate-binding domain duplication: consists of two beta(2)-alpha-beta(3)-alpha subdomains swapped with the first strands |
| c.109.1 | PEP carboxykinase N-terminal domain | PEP carboxykinase N-terminal domain contains mixed beta-sheets; topology is partly similar to that of the catalytic C-terminal domain |
| d.153.2 | Archaeal IMP cyclohydrolase PurO has a putative active site in the same topological location as the Ntn hydrolase but lacks the N-terminal nucleophile ! | Ntn hydrolase-like 4 layers: alpha/beta/beta/alpha; has an unusual sheet-to-sheet packing |
| d.58.36 | Nitrite/Sulfite reductase N-terminal domain-like duplication: contains two subdomains of this fold ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.153.1 | N-terminal nucleophile aminohydrolases (Ntn hydrolases) N-terminal residue provides two catalytic groups, nucleophile and proton donor ! | Ntn hydrolase-like 4 layers: alpha/beta/beta/alpha; has an unusual sheet-to-sheet packing |
| b.40.2 | Bacterial enterotoxins | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| d.110.1 | Profilin (actin-binding protein) alpha-beta(2)-alpha-beta(5)-alpha ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| b.52.1 | Barwin-like endoglucanases | Double psi beta-barrel barrel, closed; n=6, S=10; complex topology with crossover (psi) loops |
| c.94.1 | Periplasmic binding protein-like II Similar in architecture to the superfamily I but partly differs in topology ! | Periplasmic binding protein-like II consists of two similar intertwined domain with 3 layers (a/b/a) each: duplication ! mixed beta-sheet of 5 strands, order 21354; strand 5 is antiparallel to the rest |
| b.113.1 | N-terminal domain of MutM-like DNA repair proteins | N-terminal domain of MutM-like DNA repair proteins pseudobarrel; capped on both ends by alpha-helices |
| d.282.1 | SSo0622-like the dimer, formed in the crystals, is a probable biological unit ! | SSo0622-like alpha(2)-beta(2)-alpha-beta-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel beta-sheet: order 21354; strands 1,3 and 5 and the C-terminal helix are longer than other secondary structures |
| d.58.57 | Transposase IS200-like contains extra N-terminal hairpin and C-terminal helix, both are involved in dimerization; there can be helix-swapping in the dimer ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| e.27.1 | Upper collar protein gp10 (connector protein) | Upper collar protein gp10 (connector protein) 2 domains: (1) alpha-helical bundle; (2) beta-barrel (n=5, S=8) |
| g.91.1 | E7 C-terminal domain-like | E7 C-terminal domain-like alpha+beta zinc-binding domain; beta(2)-alpha(2) |
| d.58.31 | Methyl-coenzyme M reductase subunits each of the three different subunits, alpha, beta and gamma, contains this fold decorated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.55.1 | PH domain-like | PH domain-like barrel barrel, partly opened; n*=6, S*=12; meander; capped by an alpha-helix |
| c.8.4 | PA domain | The "swivelling" beta/beta/alpha domain 3 layers: b/b/a; the central sheet is parallel, and the other one is antiparallel; there are some variations in topology ! this domain is thought to be mobile in most multi-domain proteins known to contain it |
| d.10.1 | DNA-binding domain | DNA-binding domain beta(3)-alpha; 2 layers: alpha/beta |
| e.3.1 | beta-lactamase/transpeptidase-like | beta-lactamase/transpeptidase-like contains a cluster of helices and an alpha+beta sandwich |
| e.40.1 | Cullin homology domain | Cullin homology domain 3 domains: (1) 4-helical bundle; (2) alpha+beta; (3) "winged helix"-like |
| d.198.2 | Arp2/3 complex subunits | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.351.1 | NMB0488-like | NMB0488-like duplication: two beta(3)-alpha motifs are related by pseudo twofold symmetry; single antiparrallel beta-sheet, order:321456, shaped into a half-barrel; helical linker region |
| c.43.1 | CoA-dependent acyltransferases | CoA-dependent acyltransferases core: 2 layers, a/b; mixed beta-sheet of 6 strands, order 324561; strands 3 & 6 are antiparallel to the rest |
| d.161.1 | ADC synthase the active site is formed by additional structures inserted into the core structure ! | ADC synthase duplication: contains four repeats of alpha-beta(2)-beta motif arranged in a 4 layer core structure: alpha/beta/beta/alpha; orthogonally packed beta-sheets |
| d.342.1 | PH1570-like | PH1570-like duplication: two beta(4)-alpha structural repeats, related by pseudo twofold symmetry; two extra helices in the linker region; single 8-standed antiparallel beta-sheet, order: 12348765 |
| d.13.1 | HIT-like | HIT-like alpha-beta(3)-alpha-beta(2); 3 layers: alpha/beta/alpha |
| g.37.1 | beta-beta-alpha zinc fingers | beta-beta-alpha zinc fingers simple fold, consisting of the N-terminal beta-hairpin and C-terminal alpha-helical region; each part provides two zinc-coordinating residues with the observed sequences including C2H2, C2HC and CHHC |
| d.58.26 | GHMP Kinase, C-terminal domain common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.246.1 | mRNA decapping enzyme DcpS N-terminal domain forms swapped dimer with two 6-stranded antiparallel beta sheets; order 1236[5][4] ! | mRNA decapping enzyme DcpS N-terminal domain beta(3)-alpha-beta(3)-alpha; 3 layers a/b/a |
| e.53.1 | QueA-like | QueA-like 2 domains; d1 (1-64,174-335) [alpha/beta; 3 layers, a/b/a; mixed beta sheet of 9 strands, order: 219863457; strands 1, 5 and 8 are antiparallel to the rest]; d2 (65-142) [all-beta; barrel, closed (n=6, S=10); greek-key; topologically similar to the split barrel fold (scop_cf 50474) |
| d.30.1 | Allophycocyanin linker chain (domain) | Allophycocyanin linker chain (domain) beta(2)-alpha-beta; 2 layers: alpha/beta |
| c.97.1 | Cytidine deaminase-like contains extra C-terminal strand 5, order 21345 ! | Cytidine deaminase-like core: alpha-beta(2)-(alpha-beta)2; 3 layers (a/b/a); mixed beta-sheet of 4 strands, order 2134; strand 1 is antiparallel to the rest |
| b.51.1 | ValRS/IleRS/LeuRS editing domain | ValRS/IleRS/LeuRS editing domain core: barrel, closed; n=6, S=8; topology is similar to that of the acid proteases barrel |
| c.72.3 | CoaB-like combination of the Rossmann-like and Ribokinase-like topologies; mixed beta-sheet of 8 strands, order 32145678, strand 7 is antiparallel to the rest ! | Ribokinase-like core: 3 layers: a/b/a; mixed beta-sheet of 8 strands, order 21345678, strand 7 is antiparallel to the rest ! potential superfamily: members of this fold have similar functions but different ATP-binding sites |
| d.59.1 | Ribosomal protein L30p/L7e | Ribosomal protein L30p/L7e core: beta-alpha-beta-alpha-beta; antiparallel beta-sheet: order 312; some similarity to the ferredoxin-like fold |
| d.17.4 | NTF2-like has a beta-alpha(2)-beta insertion after the main helix ! | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| d.58.18 | ACT-like regulatory domain linked to a wide range of metabolic enzymes ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.300.1 | Kinetochore globular domain swapped heterodimer with the N-terminal helices; Spc24-like subunits have the core fold, whereas Spc25-like subunits have a variant fold ! | Kinetochore globular domain-like core: alpha-beta(3)-alpha; variant: alpha-beta(4)-alpha(2) |
| d.58.17 | HMA, heavy metal-associated domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.280.1 | Sulfolobus fructose-1,6-bisphosphatase-like | Sulfolobus fructose-1,6-bisphosphatase-like 4 layers: a/b/b/a; antiparallel beta sheets; similarities to ferredoxin-like fold (scop_cf 54861) in the N-terminal part (1-120) and to the Bacterial S-adenosylmethionine decarboxylase subunit (scop_fa 997656) in the C-terminal part (121-340) |
| d.129.1 | TATA-box binding protein-like | TBP-like beta-alpha-beta(4)-alpha |
| d.58.62 | Ribosomal protein L10-like consists of globular N-terminal domain, structurally similar to NDK, and the L7/L12-binding C-terminal alpha-helical tail | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.329.1 | PF0523-like | PF0523-like beta-alpha-beta-alpha(3)-beta-alpha-beta-alpha; 3 layers, a/b/a; antiparallel beta-sheet, order 4132; some similarity to the PurM C-terminal domain-like fold (scop_cf 56041) |
| c.59.1 | MurD-like peptide ligases, peptide-binding domain | MurD-like peptide ligases, peptide-binding domain 3 layers: a/b/a; mixed beta-sheet of 6 strands, order 126345; strand 1 is antiparallel to the rest |
| d.94.2 | Putative transcriptional regulator TM1602, C-terminal domain | HPr-like beta-alpha-beta(2)-alpha-beta-alpha; 2 layers: a/b; antiparallel sheet 1423 |
| d.256.1 | Ta1353-like | Ta1353-like core: beta-alpha-beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel beta-sheet of 5 strands; order: 51423; |
| d.35.1 | Heme-binding protein A (HasA) | Heme-binding protein A (HasA) beta-alpha-beta(6)-alpha(2); antiparallel sheet: order 165432 |
| g.48.1 | Ada DNA repair protein, N-terminal domain (N-Ada 10) | Ada DNA repair protein, N-terminal domain (N-Ada 10) metal(zinc)-bound alpha+beta fold |
| d.129.4 | Cell-division protein ZipA, C-terminal domain contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| d.109.1 | Actin depolymerizing proteins | Gelsolin-like 3 layers: a/b/a; contains mixed beta-sheet |
| d.15.7 | Immunoglobulin-binding domains | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| c.55.6 | DNA repair protein MutS, domain II | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.58.4 | Dimeric alpha+beta barrel dimerizes through the beta-sheet; forms beta-sheet barrel, closed (n=8, S=12); dimers may assemble in higher oligomers ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.9.1 | Interleukin 8-like chemokines form dimers with different dimerisation modes ! | IL8-like beta(3)-alpha |
| d.58.8 | Viral DNA-binding domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.113.1 | Nudix | Nudix beta(2)-alpha-beta(3)-alpha; 3 layers: alpha/beta/alpha; mixed sheet ! contains beta-grasp motif |
| d.41.4 | Ribosomal protein L16p/L10e | alpha/beta-Hammerhead core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids |
| d.317.1 | YkuJ-like | YkuJ-like alpha-beta(4)-alpha; 2 layers a/b; antiparallel beta-sheet, order 1234 |
| d.23.1 | Tubby C-terminal domain-like | Tubby C-terminal domain-like beta-sheet folds into a barrel (n=12, S=12) around the central helix |
| b.57.1 | Herpes virus serine proteinase, assemblin | Herpes virus serine proteinase, assemblin core: barrel, closed; n=7, S=8; complex topology |
| d.45.1 | ClpS-like | ClpS-like beta-alpha(2)-beta-alpha-beta; 2 layers, alpha/beta |
| d.58.39 | Glutamyl tRNA-reductase catalytic, N-terminal domain common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.103.1 | MoeA N-terminal region -like | MoeA N-terminal region -like complex fold made of bifurcated and coiled b-sheets |
| c.55.7 | Methylated DNA-protein cysteine methyltransferase domain | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.129.6 | KA1-like contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| c.55.2 | Creatinase/prolidase N-terminal domain | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.255.1 | Tombusvirus P19 core protein, VP19 | Tombusvirus P19 core protein, VP19 beta(2)-alpha-beta(2)-alpha; 2 layers: alpha/beta; antiparallel sheet: order 2134 |
| c.132.1 | Bacterial fluorinating enzyme, N-terminal domain | Bacterial fluorinating enzyme, N-terminal domain 3 layers: a/b/a; mixed beta-sheet of 6 strands; order: 213546, strand 5 is antiparallel to the rest; topological similarity to the MogA-like family fold |
| d.265.1 | Pseudouridine synthase the active site is the most conserved structural region of the superfamily and is located between the subdomains ! | Pseudouridine synthase consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold |
| d.308.1 | THUMP domain-like predicted RNA-binding function ! | THUMP domain contains mixed 8-stranded beta-sheet, folded into a half-barrel and covered with 4 helices on the outside; order 32148756; strands 5, 6 and 7 are parallel |
| f.10.1 | Viral glycoprotein, central and dimerisation domains | Viral glycoprotein, central and dimerisation domains 2 intertwined domains; all-beta and alpha+beta |
| e.26.1 | Prismane protein-like | Prismane protein-like 3 domains: (1) spectrin repeat-like 3-helical bundle; (2 and 3) alpha/beta: Rossmann-fold topology |
| e.7.1 | Carbohydrate phosphatase | Carbohydrate phosphatase N-terminal domain is an alpha+beta, C-terminal domain is an alpha/beta with mixed beta-sheet |
| d.58.44 | Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains duplication: the N- and C-terminal halves of the whole proteins are structurally similar; each half contains two domains of this fold ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.82.2 | Frataxin/Nqo15-like | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| d.348.1 | YegP-like | YegP-like comprises two subunits or tandem repeats of beta(3)-alpha-beta motifs; these assemble with the formation of a single beta-sheet and swapping of the C-terminal strands |
| d.142.2 | DNA ligase/mRNA capping enzyme, catalytic domain has a circularly permuted topology ! | ATP-grasp Consists of two subdomains with different alpha+beta folds ! shares functional and structural similarities with the PIPK and protein kinase superfamilies |
| d.162.1 | LDH C-terminal domain-like | LDH C-terminal domain-like unusual fold, defines family |
| d.167.1 | Peptide deformylase nickel-dependent enzyme ! | Peptide deformylase alpha-beta(5)-alpha; 3 layers: a/b/a; meander beta-sheet wraps around the C-terminal alpha-helix |
| d.277.1 | Bacillus phage protein | Bacillus phage protein alpa-beta(3)-alpha-beta(3)-alpha; 3 layers: b/a/b, 3-helical bundle flanked by two 3-stranded meander beta-sheets |
| d.303.1 | BB1717-like | BB1717-like complex fold with a bifurcated beta-sheet structure surrounded by helices; contains beta-sheet barrel, closed (n=5, S=8) |
| b.165.1 | MOSC N-terminal domain-like | MOSC N-terminal domain-like complex fold; comprises a beta-hairpin and a meander 3-stranded sheet packed against beta-barrel: closed, n=5, S=8; contains three short helices |
| d.357.1 | NosL/MerB-like | NosL/MerB-like unusual fold; comprises two structural repeats of beta(2)-alpha-beta motifs, forming separate beta-sheets; probable duplication |
| d.198.1 | Type III secretory system chaperone-like | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.15.4 | 2Fe-2S ferredoxin-like | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| e.41.1 | Adenylylcyclase toxin (the edema factor) Domain 1 has topological and active site similarity to the Nucleotidyltransferases (eg. 1kny N-domain); domain 3 binds calmodulin ! | Adenylylcyclase toxin (the edema factor) 3 domains: (1&2) alpha+beta, with domain 2 being inserted in domain 1; (3) all-alpha |
| d.61.1 | LigT-like | LigT-like duplication of beta-alpha-beta-alpha-beta motif: antiparallel beta sheet forms barrel (n=6, S=8) similar to the barrel of prokaryotic DNA topoisomerases I and III |
| b.84.2 | Rudiment single hybrid motif | Barrel-sandwich hybrid sandwich of half-barrel shaped beta-sheets |
| d.129.5 | MoaD-related protein, C-terminal domain contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| d.110.4 | SNARE-like beta(2)-alpha-beta(3)-alpha(2) ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| d.87.1 | FAD/NAD-linked reductases, dimerisation (C-terminal) domain both first two domains are of same beta/beta/alpha fold ! | CO dehydrogenase flavoprotein C-domain-like core: beta(3,4)-alpha(3); alpha+beta sandwich |
| d.193.1 | Hsp33 domain | Hsp33 domain 3 layers: beta/alpha/beta; buried helix |
| e.22.1 | Dehydroquinate synthase-like | Dehydroquinate synthase-like 2 domains: (1) alpha/beta of a Rossmann-fold topology, binds NAD (2) multihelical array |
| d.58.29 | Nucleotide cyclase common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| e.37.1 | Siroheme synthase middle domains-like | Siroheme synthase middle domains-like 2 domains: (1) alpha+beta, 2 layers; (2) 3/4-helical bundle, right-handed twist, left-handed superhelix |
| d.74.1 | PCD-like has additional alpha helix at the N-terminus ! | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| c.52.1 | Restriction endonuclease-like | Restriction endonuclease-like core: 3 layers, a/b/a; mixed beta-sheet of 5 strands, order 12345; strands 2 &, in some families, 5 are antiparallel to the rest |
| d.129.2 | Phosphoglucomutase, C-terminal domain contains a single copy of this fold and an extra beta-strand at the C-terminus ! | TBP-like beta-alpha-beta(4)-alpha |
| d.58.6 | Nucleoside diphosphate kinase, NDK | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.55.5 | Nitrogenase accessory factor-like | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.41.3 | Pyrimidine nucleoside phosphorylase C-terminal domain | alpha/beta-Hammerhead core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids |
| d.360.1 | PG1857-like | PG1857-like alpha-beta-alpha-beta(2)-alpha(3); 3 layers, a/b/a; antiparallel beta-sheet, order: 132 |
| b.45.1 | FMN-binding split barrel related to the ferredoxin reductase-like FAD-binding domain ! | Split barrel-like barrel; n=6, S=10; greek-key |
| d.63.1 | CYTH-like phosphatases | CYTH-like phosphatases duplication of beta-alpha-beta(3) motif: antiparallel beta sheet forms wide barrel (n=8, S=16) with a channel running through it |
| d.75.2 | DNA repair protein MutS, domain I | MutS N-terminal domain-like beta(2)-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta |
| c.68.1 | Nucleotide-diphospho-sugar transferases | Nucleotide-diphospho-sugar transferases 3 layers: a/b/a; mixed beta-sheet of 7 strands, order 3214657; strand 6 is antiparallel to the rest |
| d.50.2 | Porphobilinogen deaminase (hydroxymethylbilane synthase), C-terminal domain | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| f.9.1 | Perfringolysin | Perfringolysin 2 domains: (1) alpha+beta; (2) all-beta, similar to the CalB domain fold but the two last strands are transposed |
| d.322.1 | PHP14-like | PHP14-like beta(3)-alpha-beta(2)-alpha-beta; 3 layers, a/b/a; mixed beta-sheet, half-barrel, order: 132456; strands 2 and 5 are antiparallel to the rest |
| d.156.1 | S-adenosylmethionine decarboxylase | S-adenosylmethionine decarboxylase duplication of beta-alpha-beta(4)-alpha-beta-alpha-beta(2) motif; 4 layers a/b/b/a; antiparallel beta-sheets: order 23451687 |
| d.96.2 | ApbE-like duplication: contains two differently decorated beta(2)-alpha(2)-beta(2) subdomains, similar to other T-fold domains; probably does not form the tunnel-shaped oligomers ! | T-fold beta(2)-alpha(2)-beta(2); 2 layers: alpha/beta; antiparallel sheet 1234 ! tunnel-shaped: its known members form wide oligomeric barrels different sizes |
| d.44.1 | Fe,Mn superoxide dismutase (SOD), C-terminal domain | Fe,Mn superoxide dismutase (SOD), C-terminal domain alpha-beta(2)-alpha-beta-alpha(2); 3 strands of antiparallel sheet: 213 |
| e.29.1 | beta and beta-prime subunits of DNA dependent RNA-polymerase The catalytic site is formed by the association of two double-psi beta-barrel domains, one from each subunit ! | beta and beta-prime subunits of DNA dependent RNA-polymerase Multidomain subunits of complex domain organization |
| b.50.1 | Acid proteases | Acid proteases barrel, closed; n=6, S=10, complex topology |
| d.114.1 | 5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain | 5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain core: alpha-beta(2)-alpha-beta(2)-alpha-beta; 3 layers; mixed sheet: order 31425 |
| d.74.2 | C-terminal domain of arginine repressor forms trimers with three closely packed beta-sheets ! | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| d.105.1 | Subdomain of clathrin and coatomer appendage domain | Subdomain of clathrin and coatomer appendage domain beta-alpha-beta-alpha-beta(4)-alpha; 3 layers: a/b/a; bifurcated antiparallel beta-sheet |
| e.57.1 | Vacuolar ATP synthase subunit C | Vacuolar ATP synthase subunit C 2 alpha+beta (sub)domains [each has a ferredoxin-like fold; scop_cf 54861], connected with 3-helical bundle; duplication: two repeats of beta-alpha-beta-[alpha coiled-coil]-beta-alpha-beta motif |
| a.166.1 | RuBisCo LSMT C-terminal, substrate-binding domain | RuBisCo LSMT C-terminal, substrate-binding domain multihelical; irregular array of long and short helices |
| d.299.1 | Ns1 effector domain-like | Ns1 effector domain-like beta-X-beta(5)-alpha-beta-alpha; 2 layers: a/b; bifurcated beta-sheet; order 23654[1,7] |
| d.58.58 | TTP0101/SSO1404-like contains extra C-terminal beta-strand that integrates into the beta-sheet of the other subunit in the homodimer, a probable biological unit of this superfamily ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| e.73.1 | CV3147-like | CV3147-like 2 domains; d1: [alpha/beta; 3 layers, a/b/a, mixed beta-sheet of 8 strands, order 12543876, strands 1, 7 and 8 are antiparallel to the rest]; d2: [pseudo beta-barrel of 6 strands, meander] |
| d.100.1 | L9 N-domain-like | MbtH/L9 domain-like beta(2)-alpha-beta-alpha; 3 layers: alpha/beta/alpha |
| d.264.1 | Prim-pol domain | Prim-pol domain consists of two alpha+beta domains |
| d.58.48 | MTH1187/YkoF-like | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| e.24.1 | Ribosomal protein L1 | Ribosomal protein L1 2 domains: (1) alpha+beta; (2) alpha/beta (interrupts domain 1) |
| d.20.1 | UBC-like | UBC-like alpha-beta(4)-alpha(3); core: meander beta-sheet plus one helix 2 |
| c.107.1 | DHH phosphoesterases constituent families have similar domain organization with variable interdomain linker and spatial arrangement of the domains ! | DHH phosphoesterases consists of two non-similar domains ! Domain 1 has parallel sheet of 6 strands, order 321456 ! Domain 2 has mixed sheet of 5 strands, order 12345; strands 1 & 4 are antiparallel to the rest |
| d.58.59 | Rnp2-like contains extra C-terminal helix | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.217.1 | SAND domain-like | SAND domain-like core: three short helices packed against a barrel-like beta-sheet; some similarity to the SH3-like fold |
| d.134.1 | Nitrite and sulphite reductase 4Fe-4S domain-like duplication: contains two domains of this fold ! | Nitrite and sulphite reductase 4Fe-4S domain-like beta-alpha-beta-alpha-beta(3)-alpha(2,3); mixed sheet: order 12345; left-handed crossover connection between strands 1 and 2 |
| d.226.1 | GIY-YIG endonuclease | GIY-YIG endonuclease beta(2)-alpha(2)-beta-alpha-(beta); strand 4 is very short; 3 layers; antiparallel (mixed) beta-sheet; order 312(4) |
| b.43.4 | Riboflavin synthase domain-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| e.51.1 | Urocanase | Urocanase 3 domains; d1: alpha+beta [alpha(2)-beta(3); mixed sheet: 213]; d2: alpha/beta of the NAD(P)-binding Rossmann-fold superfamily (scop_sf 51735, most similar to scop_fa 51883 and scop_fa 51736); d3: alpha+beta of the glutamine synthetase/guanido kinase fold (scop_cf 55930); d1 and d3 form a single beta-sheet |
| c.20.1 | Initiation factor IF2/eIF5b, domain 3 | Initiation factor IF2/eIF5b, domain 3 3 layers, a/b/a; core: parallel beta-sheet of 4 strands, order 2134 |
| d.372.1 | YqaI-like | YqaI-like dimeric zinc-less 'zinc finger'-like fold; similar to the C-terminal strand-swapped B-box domain (scop_cf 57844) |
| b.62.1 | Cyclophilin-like | Cyclophilin-like barrel, closed; n=8, S=10; complex topology |
| b.86.1 | Hedgehog/intein (Hint) domain duplication: contains two intertwined structural repeats ! | Hedgehog/intein (Hint) domain complex fold made of five beta-hairpin units and a b-ribbon arc |
| e.38.1 | Release factor | Release factor 4 domains: (1) 3-helical bundle; (2) alpha+beta of ferredoxin-like fold (3 and 4) alpha+beta of dsRDB-like fold |
| e.28.1 | Reovirus inner layer core protein p3 | Reovirus inner layer core protein p3 large protein without apparent domain division; has a number of all-alpha regions and one all beta domain near the C-end |
| d.15.11 | Doublecortin (DC) possibly related to the ubiquitin-like superfamily ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.126.1 | Pentein | Pentein, beta/alpha-propeller duplication: composed of 5 alpha-beta(2)-alpha-beta units arranged around pseudo fivefold axis |
| e.39.1 | YebC-like | YebC-like 3 domains: (1) 3-helical bundle; (2 and 3 ) alpha+beta of different folds: domain 3 has a ferredoxin-like fold and is inserted in domain 2 |
| d.58.55 | DOPA-like probable biological unit is homodimer; the extra C-terminal strand, adjacent and antiparallel to strand 4, contributes to the dimerisation interface ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.153.1 | PheT/TilS domain contains putative tRNA-binding structural motif ! | PheT/TilS domain core: 3 layers; contains beta-sandwich of unusual topology |
| d.129.3 | Bet v1-like contains a single copy of this fold with a alpha-beta2 insertion after the first helix; there is a cavity between the beta-sheet and the long C-terminal helix ! | TBP-like beta-alpha-beta(4)-alpha |
| d.58.54 | YbeD/HP0495-like | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.109.2 | C-terminal, gelsolin-like domain of Sec23/24 | Gelsolin-like 3 layers: a/b/a; contains mixed beta-sheet |
| g.52.1 | Inhibitor of apoptosis (IAP) repeat | Inhibitor of apoptosis (IAP) repeat metal(zinc)-bound alpha+beta fold |
| d.58.16 | PAP/Archaeal CCA-adding enzyme, C-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.58.28 | Peptide methionine sulfoxide reductase common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.346.1 | SARS Nsp1-like | SARS Nsp1-like complex alpha+beta fold; contains mixed beta-sheet barrel, n=6, S=10 |
| c.123.1 | CoA-transferase family III (CaiB/BaiF) | CoA-transferase family III (CaiB/BaiF) consist of two different alpha/beta domains; N-terminal domain has a SurE-like topology with a left-handed beta-alpha-beta unit |
| d.252.1 | CheC-like | CheC-like duplication: tandem repeat of two intertwined alpha-beta-(X)-beta(2) motifs |
| e.74.1 | HI0933 insert domain-like | HI0933 insert domain-like 2 domains; d1: barrel, closed, n=6, S=12, greek-key; d2: four-helical bundle, inserted in d1 |
| d.199.1 | DNA-binding C-terminal domain of the transcription factor MotA | MotA C-terminal domain-like alpha-beta(4)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.219.1 | PP2C-like contain binuclear metal (Mn) centre ! | PP2C-like 4 layers: alpha/beta/beta/alpha; antiparallel beta sheets |
| d.15.3 | MoaD/ThiS possible link between the ubiquitin-like and 2Fe-2S ferredoxin-like superfamilies ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.287.1 | DNA methylase specificity domain | DNA methylase specificity domain comprises the N-terminal, double beta-helix like structure and C-terminal alpha-hairpin |
| d.58.42 | N-utilization substance G protein NusG, N-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.187.1 | Photosystem I subunit PsaD | Photosystem I subunit PsaD beta-BETA(2)-beta-alpha-beta(2); antiparallel sheet: order 2134 packed against helix and BETA-hairpin on the same side; irregular C-terminal tail |
| d.343.1 | MM3350-like | MM3350-like beta(2)-alpha-beta(4); antiparallel beta-sheet; order: 216534; similar to a ubiquitin-like fold with the extra C-terminal strand inserted in the middle of the beta-sheet |
| d.58.38 | Urease metallochaperone UreE, C-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.58.19 | Bacterial exopeptidase dimerisation domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.74.4 | GAD domain-like | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| d.334.1 | IlvD/EDD N-terminal domain-like | IlvD/EDD N-terminal domain-like contains a large cluster of helices and a mixed beta-sheet of 4 strands; order 2134, strands 3 and 4 are parallel |
| g.23.1 | TB module/8-cys domain | TB module/8-cys domain disulfide-rich; alpha+beta |
| d.58.56 | CcmK-like contains extra C-terminal helix; forms compact hexameric 'tiles' of hexagonal shape ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.65.1 | Formyltransferase | Formyltransferase 3 layers: a/b/a; mixed beta-sheet of 7 strands, order 3214567; strand 6 is antiparallel to the rest |
| d.330.1 | ERH-like | ERH-like beta(2)-alpha(2)-beta(2)-alpha; antiparallel beta-sheet, order:2134; helices are arranged in a bundle rather than packed agains beta-sheet; dimerises via with the formation of a flattened beta-barel: closed n=8, S=10 |
| d.166.1 | ADP-ribosylation | ADP-ribosylation unusual fold |
| d.58.52 | Sporulation related repeat duplication: one domain contains two repeats of similar sequence and structure ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.285.1 | DNA-binding domain of intron-encoded endonucleases | DNA-binding domain of intron-encoded endonucleases beta(2)-alpha(2)-beta; 2 layers; 3-stranded antiparallel beta-sheet, order 213; HTH motif; also includes the extra N-terminal, DNA minor groove-binding helix |
| c.14.1 | ClpP/crotonase | ClpP/crotonase core: 4 turns of (beta-beta-alpha)n superhelix |
| e.72.1 | SSO1389-like | SSO1389-like 2 domains; d1: [alpha/beta, central parallel beta-sheet of 6 strands, order 321456, Rossmann-like]; d2: [alpha+beta, cluster of helices and a small 4-stranded beta-sheet] |
| d.16.1 | FAD-linked reductases, C-terminal domain N-terminal domain is beta/beta/alpha common fold ! | FAD-linked reductases, C-terminal domain alpha+beta sandwich |
| c.143.1 | CofD-like | CofD-like 3 layers: a/b/a, parallel beta-sheet of 7 strands, order 3214567; topological similarity to the CobT-like fold (scop_cf 52732) |
| d.281.1 | Hemolytic lectin CEL-III, C-terminal domain | Hemolytic lectin CEL-III, C-terminal domain unusual fold |
| d.15.12 | TmoB-like possibly related to the ubiquitin-like and/or 2Fe-2S ferredoxin-like superfamilies ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.43.1 | Elongation factor Ts (EF-Ts), dimerisation domain comprises two structural repeats of this fold ! | EF-Ts domain-like beta(2)-alpha(n)-beta; 2 layers a/b; antiparallel sheet: 123 |
| d.13.2 | Rotavirus NSP2 fragment, C-terminal domain | HIT-like alpha-beta(3)-alpha-beta(2); 3 layers: alpha/beta/alpha |
| d.356.1 | SP0830-like | SP0830-like duplication: two beta-alpha-beta(2)-alpha-beta-alpha motifs are organized in ferredoxin-like subdomains swapped with the extra C-terminal helices |
| c.51.5 | CinA-like | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| d.93.1 | SH2 domain | SH2-like 3 layers: a/b/a; antiparallel beta-sheet of 5 strands is flaked by two helices |
| d.328.1 | CorA soluble domain-like | CorA soluble domain-like beta(2)-alpha-beta-alpha(2)-beta(4)-alpha(3); 3 layers: a/b/a; mixed beta-sheet, order 2137654; strands 3 and 7 are parallel |
| g.68.1 | Kazal-type serine protease inhibitors conserved core consists of a helix and a loop crosslinked with two disulfides ! | Kazal-type serine protease inhibitors |
| d.237.1 | Hypothetical protein YjiA, C-terminal domain | Hypothetical protein YjiA, C-terminal domain beta-alpha-beta(4)-alpha; 2 layers: a/b; antiparallel sheet 15234; topological similarity to the HPr-like fold |
| d.77.1 | RL5-like | RL5-like beta-alpha-beta(2)-alpha-beta(3)-alpha; 2 layers, alpha/beta; antiparallel beta-sheet: order 231654 |
| c.55.4 | Translational machinery components | Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest |
| d.186.1 | Head-to-tail joining protein W, gpW | gpW/XkdW-like alpha-beta(2)-alpha; antiparallel hairpin |
| d.82.3 | Hypothetical protein c14orf129, hspc210 | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| d.15.13 | Nqo1 middle domain-like possibly evolved from 2Fe-2S ferredoxins; contains no iron-sulfur cluster ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.369.1 | SMI1/KNR4-like | SMI1/KNR4-like alpha(4)-beta(4)-alpha; 3 layers: a/b/a; antiparallel beta-sheet, order 1234(meander) |
| d.367.1 | EscU C-terminal domain-like | EscU C-terminal domain-like alpha-beta(3)-alpha-beta-alpha(2); 3 layers, a/b/a; mixed beta-sheet, order: 4123, strand 2 is antiparallel to the rest |
| c.72.2 | MurD-like peptide ligases, catalytic domain has extra strand located between strands 1 and 2 ! | Ribokinase-like core: 3 layers: a/b/a; mixed beta-sheet of 8 strands, order 21345678, strand 7 is antiparallel to the rest ! potential superfamily: members of this fold have similar functions but different ATP-binding sites |
| d.310.1 | VC0467-like | VC0467-like complex fold; contains bifurcated beta-sheet structure folded into pseudo barrel |
| g.44.1 | RING/U-box | RING/U-box dimetal(zinc)-bound alpha+beta motif; structurally diverse |
| c.52.4 | TBP-interacting protein-like contains extra C-terminal alpha+beta domain of complex fold with an embeded C2H2 zinc-finger | Restriction endonuclease-like core: 3 layers, a/b/a; mixed beta-sheet of 5 strands, order 12345; strands 2 &, in some families, 5 are antiparallel to the rest |
| d.120.1 | Cytochrome b5-like heme/steroid binding domain | Cytochrome b5-like heme/steroid binding domain beta-alpha-beta(2)-alpha(1,2)-(beta)-alpha(2)-beta; 3 layers: a/b/a; antiparallel beta-sheet, order: 1532(4) |
| d.129.9 | RalF, C-terminal domain contains a single copy of this fold decorated with additional structures ! | TBP-like beta-alpha-beta(4)-alpha |
| e.11.1 | Type II DNA topoisomerase | Type II DNA topoisomerase 4 domains: (1) toprim alpha/beta; (2) "winged helix"-like; (3) alpha+beta; (4) all-alpha |
| d.110.2 | GAF domain-like alpha(2)-beta(3)-alpha-beta(3)-alpha; antiparallel beta-sheet: order 321654 ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| g.43.1 | B-box zinc-binding domain | B-box zinc-binding domain zinc-bound alpha+beta motif |
| d.205.1 | GTP cyclohydrolase I feedback regulatory protein, GFRP | GTP cyclohydrolase I feedback regulatory protein, GFRP beta(2)-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta, antiparallel beta-sheet: order 342165 |
| c.103.1 | MTH938-like | MTH938-like core: 3 layers, b+a/b/a ; the central mixed sheet of 5 strands: order 21534; strand 2 is antiparallel to the rest |
| c.119.1 | DAK1/DegV-like domain folds and architecture show some similarity to the tubulin-like GTPases; the nucleotide-binding sites of the Dihydroxyacetone kinase and tubulin families are different ! | DAK1/DegV-like 2 different domains; d1: [core: 3 layers, a/b/a; parallel sheet of 5 strands, order: 2134]; D2: [2 layers, a/b; mixed sheet of 6 strands, order 321645; strands 2 and 6 are antiparallel to the rest] |
| b.40.5 | Inorganic pyrophosphatase | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.76.1 | Outer surface protein 21 stranded sheet partly folded upon itself at the ends ! | open-sided beta-meander single sheet formed by beta-hairpin repeats; exposed on both sides in the middle |
| d.58.32 | FAD-linked oxidases, C-terminal domain duplication: contains two subdomains of this fold ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.15.8 | Translation initiation factor IF3, N-terminal domain | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| g.41.6 | Hypothetical protein MTH1184 contains two CXC motifs ! | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| d.64.1 | eIF1-like | eIF1-like beta(2)-alpha-beta(2)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet: order 51243 |
| d.176.1 | Oxidoreductase molybdopterin-binding domain | Oxidoreductase molybdopterin-binding domain unusual fold; contains 3 layers of beta-sheet structure and a beta-grasp like motif |
| d.107.1 | Mog1p/PsbP-like | Mog1p/PsbP-like (beta-hairpin)-beta(3)-alpha-beta(4)-alpha; 3 layers: a/b/a; antiparallel beta-sheet of 7 strands; order: 1237654 |
| c.19.1 | FabD/lysophospholipase-like | FabD/lysophospholipase-like core: 3 layers, a/b/a; mixed beta-sheet of 6 strands, order 432156; strand 4 is antiparallel to the rest |
| d.82.1 | Copper amine oxidase, domain N | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| b.46.1 | FMT C-terminal domain-like | FMT C-terminal domain-like barrel, open; n*=6, S*=10; greek-key |
| g.49.1 | Cysteine-rich domain | Cysteine-rich domain dimetal(zinc)-bound alpha+beta fold |
| d.15.6 | Superantigen toxins, C-terminal domain | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.58.34 | Formiminotransferase domain of formiminotransferase-cyclodeaminase. duplication: contains two subdomains of this fold ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.95.1 | Glucose permease domain IIB | Homing endonuclease-like alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243 |
| d.96.1 | Tetrahydrobiopterin biosynthesis enzymes-like bind purine or pterin in topologically similar sites between subunits ! | T-fold beta(2)-alpha(2)-beta(2); 2 layers: alpha/beta; antiparallel sheet 1234 ! tunnel-shaped: its known members form wide oligomeric barrels different sizes |
| 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 |
| d.54.1 | Enolase N-terminal domain-like | Enolase N-terminal domain-like beta(3)-alpha(3); meander and up-and-down bundle |
| d.58.14 | Ribosomal protein S6 | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.240.1 | Lesion bypass DNA polymerase (Y-family), little finger domain | Lesion bypass DNA polymerase (Y-family), little finger domain beta-alpha-beta(2)-alpha-beta; antiparallel beta-sheet: order 1423; "reversed" ferredoxin-like topology |
| d.140.1 | Ribosomal protein S8 | Ribosomal protein S8 consists of 2 different alpha+beta subdomains arranged in a 4-layer structure: b/a/b/a |
| d.382.1 | PSTPO5379-like | PSTPO5379-like complex fold; consists of two alpha+beta subdomains, one is inserted in the other |
| d.284.1 | PurS-like segment-swapped dimer: the swapped segment is made of the first helix and second strand; a single long strand is formed by strands 2 and 3 of each subunit ! | PurS-like consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold |
| d.4.1 | His-Me finger endonucleases common motif contains conserved histidine residue and metal-binding site ! | His-Me finger endonucleases core: (alpha)-beta-omega_loop-beta-alpha; embeded in larger different structures |
| b.45.2 | PilZ domain-like | Split barrel-like barrel; n=6, S=10; greek-key |
| d.104.1 | Class II aaRS and biotin synthetases | Class II aaRS and biotin synthetases contains large mixed beta-sheet |
| c.40.1 | Methylesterase CheB, C-terminal domain | Methylesterase CheB, C-terminal domain 3 layers: a/b/a, parallel beta-sheet of 7 strands, order 3421567 |
| d.76.1 | GYF domain | GYF/BRK domain-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| e.76.1 | Viral glycoprotein ectodomain-like | Viral glycoprotein ectodomain-like complex fold; contains three rigid, mostly-beta domains and an alpha-helical region, acting as a conformatiomal switch ("fusion stalk") |
| b.168.1 | HisI-like | HisI-like pseudo barrel, capped by an alpha-helix; contains a beta-triangle structure on one side; some topological similarity to the Ribosomal protein L25-like fold (scop_cf 50714) and the N-terminal domain of Glutamine synthetase (scop_sf 54368) |
| c.56.2 | Purine and uridine phosphorylases complex architecture; contains mixed beta-sheet of 8 strands, order 23415867, strands 3, 6 & 7 are antiparallel to the rest; and barrel, closed; n=5, S=8 ! | Phosphorylase/hydrolase-like core: 3 layers, a/b/a ; mixed sheet of 5 strands: order 21354; strand 4 is antiparallel to the rest; contains crossover loops |
| b.129.1 | AbrB/MazE/MraZ-like members of this superfamily are known or predicted to have DNA-binding function ! | Double-split beta-barrel pseudobarrel; capped on both ends by alpha-helices |
| d.58.27 | Translational regulator protein regA common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.52.10 | EspE N-terminal domain-like contains extra C-terminal helix that packs against shorter N-terminal helix | Alpha-lytic protease prodomain-like core: alpha-beta(2)-(alpha)-beta; 2 layers: alpha/beta |
| d.84.1 | Subtilisin inhibitor | Subtilisin inhibitor alpha+beta sandwich |
| d.128.1 | Glutamine synthetase/guanido kinase | Glutamine synthetase/guanido kinase duplication: common core consists of two beta-alpha-beta2-alpha repeats |
| b.142.1 | DNA-binding pseudobarrel domain | DNA-binding pseudobarrel domain core: barrel, open; n=7, S*=10; capped with helices at both ends; partial similarity to the AbrB/MazE/MraZ-like fold (scop_cf 89446) |
| d.41.5 | Molybdopterin synthase subunit MoaE | alpha/beta-Hammerhead core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids |
| d.211.2 | Plakin repeat repeats associate forming globular subdomains ! | beta-hairpin-alpha-hairpin repeat multiple repeats of beta(2)-alpha(2) motif |
| f.11.1 | Anthrax protective antigen | Anthrax protective antigen 4 domains; I (res. 14-225) and II (226-487) are beta-sandwiches of similar gamma-crystallin like topologies; III (488-594) has a beta-grasp like fold; IV (595-735) has an Ig-like fold |
| d.258.1 | Chorismate synthase, AroC | Chorismate synthase, AroC duplication: consists of two DCoH-like beta(2)-alpha-beta(2)-alpha structural repeats; 3 layers, beta/alpha/beta |
| b.81.4 | Guanosine diphospho-D-mannose pyrophosphorylase/mannose-6-phosphate isomerase linker domain probable rudiment form of the LpxA-like hexapeptide domain | Single-stranded left-handed beta-helix superhelix turns are made of parallel beta-strands and (short) turns |
| d.58.22 | TRADD, N-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.126.1 | Adsorption protein p2 | Adsorption protein p2 multisheet protein containing partial beta-propeller and beta-sandwich regions |
| b.43.5 | Riboflavin kinase-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| d.136.1 | Phospholipase D/nuclease | Phospholipase D/nuclease beta-alpha-beta-alpha-beta-alpha-beta(4)-alpha; mixed sheet: order 1765234 |
| b.124.1 | HesB-like domain | HesB-like domain barrel, closed; n=7, S=10; complex topology |
| d.207.1 | Thymidylate synthase-complementing protein Thy1 | Thymidylate synthase-complementing protein Thy1 complex alpha+beta fold; contains antiparallel 5-stranded beta-sheet: order 12354 |
| d.129.11 | YugN-like | TBP-like beta-alpha-beta(4)-alpha |
| d.49.1 | Signal recognition particle alu RNA binding heterodimer, SRP9/14 | Signal recognition particle alu RNA binding heterodimer, SRP9/14 (beta)-alpha-beta(3)-alpha; 2 layers, alpha/beta |
| d.165.1 | Ribosome inactivating proteins (RIP) | Ribosome inactivating proteins (RIP) contains mixed beta-sheet |
| d.315.1 | TRCF domain-like | TRCF domain-like beta-alpha(3)-beta(2)-alpha-beta(2)-alpha; 2 layers: alpha/beta; mixed beta sheet, order 12354, strands 1 and 2 are parallel; some topological similarity to the DCoH-like fold (scop_cf 55247) |
| e.12.1 | DNA topoisomerase IV, alpha subunit | DNA topoisomerase IV, alpha subunit 2 domains: (1) toprim alpha/beta; (2) "winged helix"-like |
| d.354.1 | Shew3726-like | Shew3726-like beta(3)-alpha(n)-beta; 2 layers, a/b; mixed beta-sheet, order 1234, strands 3 and 4 are parallel with a left-handed crossover connection |
| d.247.1 | Chromosomal protein MC1 | Chromosomal protein MC1 beta(2)-alpha-beta(3); 2 layers: alpha/beta |
| d.296.1 | YktB/PF0168-like | YktB/PF0168-like alpha-beta(4)-alpha-beta(2)-alpha-beta-alpha; 2 layers, a/b; antiparallel beta-sheet, order: 1234756; half-barrel shape; topological similarity to the MotA C-terminal domain-like fold (scop_cf 69651) and the Secretion chaperone-like fold (scop_cf 69634) |
| c.51.2 | TolB, N-terminal domain | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| d.18.1 | ssDNA-binding transcriptional regulator domain | ssDNA-binding transcriptional regulator domain helix-swapped dimer of beta(4)-alpha motifs |
| c.89.1 | Phosphofructokinase | Phosphofructokinase consists of two non-similar domains, 3 layers (a/b/a) each ! Domain 1 has mixed sheet of 7 strands, order 3214567; strands 3 & 7 are antiparallel to the rest ! Domain 2 has parallel sheet of 4 strands, order 2314 |
| d.15.10 | TGS-like possibly related to the ubiquitin-like and MoaD/ThiS superfamilies; some similarity to the alpha-L RNA-binding motif ! | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.309.1 | AMMECR1-like | AMMECR1-like duplication; contains two beta(2)-alpha-beta(2) structural repeats, swapped with C-terminal strands; extra N-terminal helix and C-terminal strand |
| a.294.1 | Tex N-terminal region-like | Tex N-terminal region-like multihelical; irregular array of long and short helices; can be divided into several subdomains |
| d.41.2 | Nicotinate/Quinolinate PRTase N-terminal domain-like | alpha/beta-Hammerhead core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids |
| d.58.9 | RuBisCO, large subunit, small (N-terminal) domain C-terminal domain is beta/alpha barrel ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.8.2 | LeuD/IlvD-like contains mixed beta-sheet barrel, closed n=7, S=10 ! | The "swivelling" beta/beta/alpha domain 3 layers: b/b/a; the central sheet is parallel, and the other one is antiparallel; there are some variations in topology ! this domain is thought to be mobile in most multi-domain proteins known to contain it |
| d.311.1 | ImmE5-like | ImmE5-like alpha-beta(2)-alpha-beta; 2 layers, a/b; antiparallel beta-sheet, order 213 |
| d.58.20 | NAD-binding domain of HMG-CoA reductase | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.17.6 | Pre-PUA domain this domain is found in association with the PUA domain in the C-terminal region of Archaeosine tRNA-guanine transglycosylase and related stand-alone proteins ! | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| c.41.1 | Subtilisin-like | Subtilisin-like 3 layers: a/b/a, parallel beta-sheet of 7 strands, order 2314567; left-handed crossover connection between strands 2 & 3 |
| c.99.1 | Dipeptide transport protein | Dipeptide transport protein 3 layers: a/b/a; parallel beta-sheet of 6 strands, order 321456; also contains a C-terminal alpha+beta subdomain |
| d.371.1 | YehR-like | YehR-like beta(3)-alpha-beta(2)-alpha(3)-beta; 2 layers, a/b; antiparallel beta-sheet, order: 612354 |
| d.168.1 | Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain | Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain unusual fold |
| d.375.1 | NE1680-like | NE1680-like beta(2)-alpha-beta-alpha-beta; 2 layers, a/b; antiparallel sheet, order 3124 |
| d.50.1 | dsRNA-binding domain-like | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| b.97.1 | Cytolysin/lectin some topological similarity to osmotin ! | Cytolysin/lectin sandwich, 10 strands in 2 sheets; |
| d.109.3 | FLJ32549 C-terminal domain-like alpha-beta(2)-alpha-beta(3)-alpha; similar to the Roadblock/LC7 domain | Gelsolin-like 3 layers: a/b/a; contains mixed beta-sheet |
| e.17.1 | D-aminoacid aminotransferase-like PLP-dependent enzymes | D-aminoacid aminotransferase-like PLP-dependent enzymes 2 domains: (1) alpha+beta: beta3-alpha2-beta2; (2) alpha/beta, a part of its mixed sheet forms barrel: n=6, S=8 |
| d.48.1 | RecA protein, C-terminal domain | Anti-LPS factor/recA domain alpha-beta(3)-alpha(2); 2 layers, alpha/beta |
| d.34.1 | DNA-binding domain of Mlu1-box binding protein MBP1 has some topological similarity to the "winged helix" DNA-binding domain, to B1 and B5 domains of PheRS-beta (1PYS CH B) and to methyl-CpG-binding domain ! | DNA-binding domain of Mlu1-box binding protein MBP1 beta(4)-alpha(2)-beta(2)-alpha; antiparallel sheet: order 123465 |
| b.40.6 | MOP-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| d.312.1 | TM1622-like | TM1622-like alpha-beta(3)-alpha-beta(4)-alpha; 3 layers, a/b/a; antiparallel beta-sheet, order: 1237654 |
| d.249.1 | Hypothetical protein Ta1206 can be divided into an N-terminal, tetramerisation all-beta subdomain and a C-terminal alpha+beta subdomain related by a circular permutation to the Y-family DNA-polymerase 'fingers' subdomain ! | Hypothetical protein Ta1206 beta(4)-alpha-beta(2)-alpha(2); mixed, predominately antiparallel beta-sheet, order: 123465, strands 4 and 5 are parallel to each other |
| d.36.1 | Chalcone isomerase | Chalcone isomerase beta(3)-alpha(2)-beta-alpha(2)-beta3; 2 layers alpha/beta; antiparallel sheet: order 1234567 |
| d.95.2 | Homing endonucleases | Homing endonuclease-like alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243 |
| e.48.1 | Major capsid protein VP5 | Major capsid protein VP5 large protein without apparent domain division |
| c.81.1 | Formate dehydrogenase/DMSO reductase, domains 1-3 molybdopterine enzyme ! | Formate dehydrogenase/DMSO reductase, domains 1-3 contains of two similar intertwined domains related by pseudo dyad; duplication ! core: 3 layers: a/b/a; parallel beta-sheet of 5 strands, order 32451 |
| d.198.3 | YjbR-like overall similar to the Type III secretory system chaperone subunits; different shape of the beta-sheet ! | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.110.9 | GlcG-like alpha-beta(2)-alpha(3)-beta(2)-alpha; similar to the Roadblock/LC7 domain ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| d.58.61 | MTH889-like assembles into hexameric ring-like structures with the formation of a singe beta-barrel sheet of 24 strands | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.74.5 | PH0987 N-terminal domain-like | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| d.58.51 | eIF-2-alpha, C-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.163.1 | DNA breaking-rejoining enzymes | DNA breaking-rejoining enzymes core: alpha3-beta3-alpha4; one side of beta-sheet is exposed |
| c.8.3 | Carbamoyl phosphate synthetase, small subunit N-terminal domain | The "swivelling" beta/beta/alpha domain 3 layers: b/b/a; the central sheet is parallel, and the other one is antiparallel; there are some variations in topology ! this domain is thought to be mobile in most multi-domain proteins known to contain it |
| d.341.1 | Peptidoglycan deacetylase N-terminal noncatalytic region | Peptidoglycan deacetylase N-terminal noncatalytic region consists of two different domains, d1: [alpha-beta(2)-alpha-beta(3); 3 layers: a/b/a; mixed beta-sheet, order 12345, strands 2 and 3 are parallel to each other with a left-handed crossover connection], d2: alpha-beta(3)-alpha; 2 layers; antiparallel beta-sheet, order 123] |
| c.74.1 | AraD/HMP-PK domain-like | AraD/HMP-PK domain-like 3 layers: a/b/a; mixed (mostly antiparallel) beta-sheet of 9 strands, order 432159876; left-handed crossover between strands 4 and 5 |
| c.8.1 | Phosphohistidine domain contains barrel, closed, n=7, S=10 ! | The "swivelling" beta/beta/alpha domain 3 layers: b/b/a; the central sheet is parallel, and the other one is antiparallel; there are some variations in topology ! this domain is thought to be mobile in most multi-domain proteins known to contain it |
| d.172.1 | gp120 core | gp120 core unusual fold |
| c.1.13 | Malate synthase G | TIM beta/alpha-barrel contains parallel beta-sheet barrel, closed; n=8, S=8; strand order 12345678 ! the first seven superfamilies have similar phosphate-binding sites |
| b.59.1 | XRCC4, N-terminal domain an HTH motif connects strands 4 and 5 ! | XRCC4, N-terminal domain barrel, closed; n=7, S=10; order: 1234765; strands 1 and 5 are parallel to each other |
| d.276.1 | Hypothetical protein yfbM | Hypothetical protein yfbM beta-alpha(2)-beta-alpha(2)-beta(2)-alpha(n)-beta; 3 layers: a/b/a; antiparallel beta-sheet, order: 21543 |
| g.89.1 | CHY zinc finger-like | CHY zinc finger-like trimetal-bound fold; integration of HIT/MYND-like and rubredoxin-like fingers |
| b.91.1 | E2 regulatory, transactivation domain | E2 regulatory, transactivation domain complex fold made of bifurcated and coiled beta-sheets |
| d.155.1 | Pyruvoyl-dependent histidine and arginine decarboxylases two chains result from self-processing single-chain precursor; form heterohexamer ! | Pyruvoyl-dependent histidine and arginine decarboxylases duplication of beta-alpha-beta(2) motif; 4 layers: alpha/beta/beta/alpha; contains "silk" beta-sandwich |
| e.23.1 | Acetyl-CoA synthetase-like | Acetyl-CoA synthetase-like 4 domains: (1&2) duplication: share the same alpha/beta fold; (3) beta-barrel; (4) alpha+beta |
| d.116.1 | YbaK/ProRS associated domain | YbaK/ProRS associated domain core: alpha-beta-alpha-beta(2)-(alpha-beta)2-alpha-beta(2)-alpha-beta; 3 layers; bifurcated mixed sheet |
| g.6.1 | Amb V allergen | Amb V allergen disulfide-rich; alpha+beta: 3 antiparallel strands followed by a short alpha helix |
| c.138.1 | Indigoidine synthase A-like | Indigoidine synthase A-like core: 3 layers, a/b/a; parallel beta-sheet of 7 strands, order 2134756 |
| d.355.1 | RplX-like similar structural motif to the Ribosomal S24e family (scop_fa 117786); possible structural permutation | RplX-like beta(2)-alpha-beta-alpha; 3 layers, a/b/a; antiparallel beta-sheet, order: 213; some structural similarity to the PurS subunit/repeat (scop_cf 109622) |
| d.257.1 | Hypothetical protein TM0160 | Hypothetical protein TM0160 duplication: consists of two beta(3)-alpha(2) structural repeats; single barrel-like beta-sheet |
| b.8.1 | TRAF domain-like has a circularly permuted immunoglobulin-fold topology with extra strand ! | TRAF domain-like sandwich; 8 strands in 2 sheets; greek-key |
| d.269.1 | Gamma-glutamyl cyclotransferase-like | Gamma-glutamyl cyclotransferase-like beta-alpha-beta(4)-alpha-beta(2); contains beta-sheet barrel (n=5, S=8) |
| e.62.1 | Heme iron utilization protein-like | Heme iron utilization protein-like 2 domains; d1 - 3-helical bundle similar to the homeodomain-like fold; d2 - 6-stranded beta-barrel capped by two helices at one end, similar topology to the PH-like fold |
| g.29.1 | Type X cellulose binding domain, CBDX | Type X cellulose binding domain, CBDX disulfide-rich, alpha+beta |
| d.201.1 | SRP19 | SRP19 beta-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.173.1 | Methionine synthase activation domain-like | Methionine synthase activation domain-like unusual fold; core: beta-alpha(2)-beta(2)-alpha(2)-beta-alpha-beta; antiparallel beta-sheet: order 12354 |
| b.34.17 | YccV-like contains extra C-terminal helix packed against barrel ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| d.64.2 | TM1457-like forms a homodimer via alpha-helical interface ! | eIF1-like beta(2)-alpha-beta(2)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet: order 51243 |
| d.58.47 | Hypothetical protein VC0424 | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.244.1 | Cell division protein ZapA-like | Cell division protein ZapA-like core: beta(2)-alpha(2), 2 layers: alpha/beta; long C-terminal helix forms dimeric parallel and tetrameric antiparallel coiled coils |
| d.58.12 | eEF-1beta-like | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| 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 |
| b.43.2 | FucI/AraA C-terminal domain-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| d.214.1 | Hypothetical protein MTH1880 | Hypothetical protein MTH1880 beta-alpha-beta(2)-alpha(2); 3 layers, alpha/beta/alpha; antiparallel beta-sheet: order 123 |
| c.83.1 | Aconitase iron-sulfur domain | Aconitase iron-sulfur domain consists of three similar domains with 3 layers (a/b/a) each; duplication ! core: parallel beta-sheet of 5 strands, order 32145 |
| b.69.12 | Sema domain irregular 7-bladed beta-propeller with a large insertion in the fifth blade ! | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| c.67.2 | PhnH-like single domain protein of similar topology to the core domain of PLP-transferases | PLP-dependent transferase-like main domain: 3 layers: a/b/a, mixed beta-sheet of 7 strands, order 3245671; strand 7 is antiparallel to the rest |
| 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.111.1 | Acid phosphatase/Vanadium-dependent haloperoxidase | Acid phosphatase/Vanadium-dependent haloperoxidase multihelical; core: 5-helical bundle; binds cofactor at the beginning of third helix |
| d.58.33 | Formylmethanofuran:tetrahydromethanopterin formyltransferase duplication: contains two subdomains of this fold ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.82.5 | GK1464-like dimer; pseudo barrel; the true dimeric barrel formation requires swapping of the C-ternimal beta-alpha units ! | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| a.223.1 | Triger factor/SurA peptide-binding domain-like there are sequence and functional similarities between the families, but their structural similarity is obscured by conformational flexibility (in the TF family) ! | Triger factor/SurA peptide-binding domain-like multihelical; irregular array of long and short helices |
| d.62.1 | Pepsin inhibitor-3 | Pepsin inhibitor-3 duplication of beta(3)-alpha(2) motif: meander beta sheets form barrel-like structure |
| d.58.30 | 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase, HPPK common fold is elaborated with additional secondary structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.261.1 | Hypothetical protein PH1602 | Hypothetical protein PH1602 complex alpha+beta fold; contains a region of similarity to the ferredoxin-like fold |
| d.129.7 | TT1751-like contains a single copy of this fold decorated with additional structures; forms dimer ! | TBP-like beta-alpha-beta(4)-alpha |
| b.140.1 | Replicase NSP9 | Replicase NSP9 barrel; n=6, S=8, greek-key; similar to one trypsin-like protease barrel |
| d.235.1 | FYSH domain | FYSH domain beta(2)-alpha(2)-beta(2)-alpha-beta; two layers: alpha/beta; antiparallel sheet: order 51234 |
| d.148.1 | Hect, E3 ligase catalytic domain | Hect, E3 ligase catalytic domain consists of two alpha+beta domains; the N-terminal domain is array of helices and beta-hairpins; the C-terminal domain is an a/b sandwich with one left-handed beta-alpha(n)-beta unit; conformational flexibility of domain orientation |
| d.52.6 | BolA-like | Alpha-lytic protease prodomain-like core: alpha-beta(2)-(alpha)-beta; 2 layers: alpha/beta |
| d.27.1 | Ribosomal protein S16 | Ribosomal protein S16 beta(4)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet, order: 51234 |
| c.111.1 | Activating enzymes of the ubiquitin-like proteins transfer adenylyl group to the C-terminal carboxyl group of the ubiquitin and MoaD/ThiS-related proteins ! the ATP nucleotide-binding site is similar to that of the NAD-binding Rossmann-folds ! | Activating enzymes of the ubiquitin-like proteins 3 layers: a/b/a; mixed beta-sheet of 8 strands, order 32145678; strands 6 and 8 are antiparallel to the rest |
| c.13.2 | SpoIIaa-like | SpoIIaa-like core: 4 turns of a (beta-alpha)n superhelix |
| c.47.2 | RNA 3'-terminal phosphate cyclase, RPTC, insert domain | Thioredoxin fold core: 3 layers, a/b/a; mixed beta-sheet of 4 strands, order 4312; strand 3 is antiparallel to the rest |
| d.58.13 | Anticodon-binding domain of PheRS | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.324.1 | DUSP-like | DUSP-like alpha-beta-alpha-X-beta-alpha-beta; three-helical bundle capped at one end by antiparallel beta-sheet, order: 213 |
| d.272.1 | Dystroglycan, domain 2 | Dystroglycan, domain 2 beta-alpha-beta-X-beta(2)-alpha(2)-beta; antiparallel beta-sheet, order 24153; topological similarity to the ferredoxin-like fold (scop_cf 54861) |
| d.198.5 | YgaC/TfoX-N like overall similar to the Type III secretory system chaperone subunits; different shape of the beta-sheet | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| d.50.4 | Peptidyl-tRNA hydrolase domain-like | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| d.192.1 | YlxR-like | YlxR-like alpha+beta fold; could have evolved from a glucocorticoid receptor-like zinc finger domain |
| d.58.25 | Killer toxin KP6 alpha-subunit | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| a.170.1 | BRCA2 helical domain | BRCA2 helical domain multihelical; contains a 3-helical bundle surrounded by several shorter helices |
| d.15.5 | Staphylokinase/streptokinase | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.292.1 | DNA mismatch repair protein MutL | DNA mismatch repair protein MutL consists of two different alpha+beta (sub)domains; d1: [beta(3)-alpha-(insert of d2)-alpha(2)-beta; 2 layers, a/b; antiparallel sheet, order: 1234]; d2: [beta-alpha-beta(2)-alpha(2); 2 layers, a/b; antiparallel sheet, order: 132] |
| d.336.1 | YbiA-like | YbiA-like consists of six alpha-helices and two two-stranded beta-sheets |
| d.204.1 | Ribosome binding protein Y (YfiA homologue) | Ribosome binding protein Y (YfiA homologue) beta-alpha-beta(3)-alpha; 2 layers; mixed sheet 1234, strand 3 is antiparallel to the rest |
| e.18.1 | HydB/Nqo4-like | HydB/Nqo4-like 3 domains: (1) all-alpha; (2&3) alpha+beta |
| c.1.20 | tRNA-guanine transglycosylase | TIM beta/alpha-barrel contains parallel beta-sheet barrel, closed; n=8, S=8; strand order 12345678 ! the first seven superfamilies have similar phosphate-binding sites |
| b.100.1 | Sortase | Sortase barrel, closed; n=8, S=10; mixed sheet; two overside connections |
| b.3.3 | VHL | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| b.112.1 | C-terminal domain of mollusc hemocyanin analogous to the Ig-like domain of arthropod hemocyanin; similar sequential but different spatial position relative the shared domain ! | C-terminal domain of mollusc hemocyanin six-stranded beta-sandwich, jelly-roll/greek-key topology |
| d.349.1 | CPE0013-like | CPE0013-like beta(2)-alpha-beta(3); mixed, mostly antiparallel beta-sheet, folded in a half-barrel; order:31254; strand 3 is parallel to strand 1 and is shorter than the rest |
| d.270.1 | 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain | 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain duplication: consists of two beta(3)-alpha repeats; 3 layers, beta/alpha/beta |
| c.82.1 | ALDH-like binds NAD differently from other NAD(P)-dependent oxidoreductases ! | ALDH-like consists of two similar domains with 3 layers (a/b/a) each; duplication ! core: parallel beta-sheet of 5 strands, order 32145 |
| d.129.10 | YwmB-like duplication: tandem repeat of two circularly permuted motifs, alpha-beta-alpha-beta(4), assembled as in the TATA-box binding domain; forms a swapped dimer by exchanging the equivalent parts of the C-terminal motifs ! | TBP-like beta-alpha-beta(4)-alpha |
| b.42.8 | AbfB domain | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| d.164.1 | SMAD MH1 domain | SMAD MH1 domain consists of four alpha-helices and three beta-ribbons |
| b.7.4 | Rab geranylgeranyltransferase alpha-subunit, insert domain | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| c.27.1 | Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain | Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain 3 layers: a/b/a; parallel beta-sheet of 5 strands, order 32145; Rossmann-like |
| d.58.43 | Mechanosensitive channel protein MscS (YggB), C-terminal domain the last strand of the fold is flipped away and involved in oligomerisation ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.55.2 | PA2021-like prokaryotiic proteins of PH domain-like fold lacking the N-terminal strand ! | PH domain-like barrel barrel, partly opened; n*=6, S*=12; meander; capped by an alpha-helix |
| b.1.12 | Purple acid phosphatase, N-terminal domain | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.167.1 | FimD N-terminal domain-like | FimD N-terminal domain-like pseudo barrel, capped by an alpha-helix; some topological similarity to the PRC-barrel domain (scop_sf 50346) and the N-terminal domain of Glutamine synthetase (scop_sf 54368) |
| e.2.1 | Replication terminator protein (Tus) | Replication terminator protein (Tus) contains a cluster of helices and a beta-sandwich |
| d.283.1 | Putative modulator of DNA gyrase, PmbA/TldD | Putative modulator of DNA gyrase, PmbA/TldD consists of two different alpha+beta domains; d1: [duplication of alpha-beta(3)-alpha motif; 2 layers: a/b; antiparallel beta-sheet, order: 321456; strands 1, 2, 4 and 5 are twice longer than other secondary structures]; d2 [ complex fold; contains beta-barrel (n=5, S=10)] |
| b.120.1 | Tp47 lipoprotein, N-terminal domain | Tp47 lipoprotein, N-terminal domain complex fold; consists of two intertwined subdomains |
| d.182.1 | Baseplate structural protein gp11 | Baseplate structural protein gp11 unusual fold; trimer |
| a.71.2 | Helical domain of Sec23/24 | ERP29 C domain-like 5 helices; bundle |
| d.304.1 | TTHA1013/TTHA0281-like | TTHA1013/TTHA0281-like beta(3)-alpha-beta; 2 layers; mixed beta-sheet, order 4123, strands 1 and 4 are parallel to each other; topological similarity to the SEP domain fold (scop_cf 102847); dimerises via the long C-terminal strand with the formation of a single beta-sheet |
| b.69.3 | Nitrous oxide reductase, N-terminal domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| c.51.4 | ITPase-like formerly Maf/Ham1; elaborated with additional structures inserted in the common fold ! | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| e.5.1 | Heme-dependent catalase-like | Heme-dependent catalase-like contains an (8,10) beta-barrel and an all-alpha domain |
| e.25.1 | Sec1/munc18-like (SM) proteins | Sec1/munc18-like (SM) proteins 3 domains: (1 and 2) alpha+beta; (3) mostly alpha, inserted in domain 2 |
| d.58.41 | SEA domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| b.69.6 | Clathrin heavy-chain terminal domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| e.35.1 | Membrane penetration protein mu1 | Membrane penetration protein mu1 4 domains: three intertwined predominately alpha domains and one jelly-roll beta-sandwich |
| b.68.3 | Thermostable phytase (3-phytase) | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.40.3 | TIMP-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| d.297.1 | WGR domain-like | WGR domain-like beta(4)-alpha-X-beta; 2 layers, a/b; antiparallel beta-sheet, order 51234; the beta-hairpin insetrion in strand 1 results in the formation of a beta-triangle structure |
| d.260.1 | Suppressor of Fused, N-terminal domain | Suppressor of Fused, N-terminal domain unusual fold; bifurcated beta-sheet; left-handed beta-alpha-beta unit |
| d.15.9 | Glutamine synthetase, N-terminal domain | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| e.69.1 | Poly(A) polymerase catalytic subunit-like Central domain d2 is distantly related to the nucleotidyltransferase superfamily (scop_sf 81301) | Poly(A) polymerase catalytic subunit-like 3 domains; d1: all-alpha, contains HhH motif; d2: alpha+beta of nucleotidyltransferase fold (scop_cf 81302); d3: [alpha+beta; beta(3)-alpha-beta(3)-alpha(2); 3 layers: a/b/a; mixed beta-sheet of 6 strands, order 123654, strands 2 and 5 are antiparallel to the rest |
| d.253.1 | Hypothetical protein YoaG | Hypothetical protein YoaG dimer of beta(2)-alpha motifs ; 2 layers, alpha/beta; reverse MinE topology |
| d.175.1 | Penicillin binding protein dimerisation domain | Penicillin binding protein dimerisation domain unusual fold |
| d.340.1 | CofE-like | CofE-like consists of two different domains; d1: beta-alpha-beta-alpha-beta(2)-alpha-beta, mixed sheet of 5 strands, order:15234, strands 2 and 3 are parralel; d2 is inserted in d1 after strand 2 and comprises a helix-turn-helix motif and two 3-stranded sheets |
| b.175.1 | FomD-like | FomD barrel-like barrel, closed; n=8, S=12; meander; similar topology to the AOC barrel-like fold (reversed to the lipocalin barrel topology) |
| d.58.50 | Hypothetical protein TT1725 | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| c.56.4 | Pyrrolidone carboxyl peptidase (pyroglutamate aminopeptidase) | Phosphorylase/hydrolase-like core: 3 layers, a/b/a ; mixed sheet of 5 strands: order 21354; strand 4 is antiparallel to the rest; contains crossover loops |
| b.34.14 | PAZ domain | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| d.143.1 | SAICAR synthase-like shares functional and structural similarities with the ATP-grasp fold and protein kinase superfamilies ! | SAICAR synthase-like consists of two alpha+beta subdomains |
| a.56.1 | CO dehydrogenase ISP C-domain like contains 2Fe-2S cluster ! | CO dehydrogenase ISP C-domain like core: 4 helices, bundle |
| b.31.1 | EV matrix protein | EV matrix protein consists of two beta-sandwich domains of similar topologies |
| c.147.1 | CAC2185-like | CAC2185-like consists of two non-similar domains, 3 layers (a/b/a) each; d1 has parallel sheet of 4 strands, order 2134; d2 has parallel sheet of 5 strands, order 21345, and antiparallel meander sheet of 3 strands |
| d.352.1 | FlaG-like | FlaG-like alpha(2)-beta(3)-alpha; 2 layers: a/b; antiparallel beta-sheet, order: 123; partial similatity to the dsRBD-like fold(sop_cf 54767) |
| d.350.1 | YcgL-like | YcgL-like beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel beta-sheet, order:3124 |
| d.319.1 | TTHA1528-like | TTHA1528-like beta-alpha-beta(3)-alpha-beta-alpha(2)-beta; 3 layers: a/b/a; mixed beta-sheet, order: 143256, parallel strands' pairs are 1-4 and 2-5 |
| b.67.1 | Tachylectin-2 | 5-bladed beta-propeller consists of five 4-stranded beta-sheet motifs; meander |
| e.55.1 | Rap/Ran-GAP | Rap/Ran-GAP consists of two domains; d1: alpha+beta (78-190; alpha-beta(4)-alpha-beta-alpha; 3 layers; antiparallel beta-sheet of 5 strands; order 51234); d2: alpha/beta similar to the G-domain fold (191-381; scop_fa 52592) |
| a.100.1 | 6-phosphogluconate dehydrogenase C-terminal domain-like N-terminal domain is Rossmann-fold with a family-specific C-terminal extension ! | 6-phosphogluconate dehydrogenase C-terminal domain-like multihelical; common core is formed around two long antiparallel helices related by (pseudo) twofold symmetry |
| d.305.1 | NAP-like | NAP-like core: central meander 4-stranded beta-sheet (order: 1234) transversed by a C-terminal helix |
| b.34.8 | Fumarylacetoacetate hydrolase, FAH, N-terminal domain | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| d.179.1 | Substrate-binding domain of HMG-CoA reductase | Substrate-binding domain of HMG-CoA reductase unusual fold |
| d.238.1 | Hypothetical protein TM0875 | Hypothetical protein TM0875 unusual fold; core: beta(2)-loop-beta(2)-alpha-beta; mixed beta-sheet: order 51243; parallel strands 2 and 4 |
| a.171.1 | BRCA2 tower domain | BRCA2 tower domain multihelical; contains a 3-helical Hin recombinase-like subdomain and two long dimerisation helices |
| d.232.1 | Mago nashi protein | Mago nashi protein beta(4)-alpha-beta(2)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, order: 651234 |
| d.15.14 | NSP3A-like short helical inserions in the common fold | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| b.145.1 | AXH domain | AXH domain pseudobarrel; some similarity to OB-fold |
| e.10.1 | Prokaryotic type I DNA topoisomerase duplication: the protein chain passing through the domains 2-4 makes two structural repeats ! The active site is formed by the toprim and "winged helix" domains (domains 1 and 4); these two domains are also found in the type II topoisomerase (DNA gyrase A) and in the alpha subunit of topoisomerase IV ! | Prokaryotic type I DNA topoisomerase 4 domains: (1) Toprim alpha/beta; (2&4) "winged helix"-like; (3) barrel: n=6, S=8 |
| c.56.7 | AF0625-like contains extra C-terminal alpha/beta domain: 3 layers, a/b/a; parallel beta-sheet of 4 strands, order 2134 ! | Phosphorylase/hydrolase-like core: 3 layers, a/b/a ; mixed sheet of 5 strands: order 21354; strand 4 is antiparallel to the rest; contains crossover loops |
| d.335.1 | L,D-transpeptidase pre-catalytic domain-like | L,D-transpeptidase pre-catalytic domain-like unusual fold, made of four helices and four 2-3 stranded beta-sheets |
| b.49.3 | Aminopeptidase/glucanase lid domain | Domain of alpha and beta subunits of F1 ATP synthase-like barrel, closed; n=6, S=8; greek-key |
| d.320.1 | YojJ-like | YojJ-like alpha-beta-X-beta-alpha-beta(2)-alpha-beta(3); 3 layers: a/b/a; 7-stranded mixed beta-sheet, order 2431567; strands 1 and 3 are parallel to each other |
| a.42.1 | SWIB/MDM2 domain binds to the transactivation domain of human p53 ! | SWIB/MDM2 domain core: 4 helices: open bundle; capped by two small 3-stranded beta-sheets ! duplication: consists of two structural repeats |
| b.82.4 | Regulatory protein AraC | Double-stranded beta-helix one turn of helix is made by two pairs of antiparallel strands linked with short turns ! has appearance of a sandwich of distinct architecture and jelly-roll topology |
| d.82.4 | GAS2 domain-like this superfamily may include the most C-terminal domain of IBP39 ( | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| b.138.1 | Hydrophobin II, HfbII | Hydrophobin II, HfbII core: barrel, closed; n=4, S=8; complex topology; helix-containing crossover connection |
| c.13.1 | CRAL/TRIO domain | SpoIIaa-like core: 4 turns of a (beta-alpha)n superhelix |
| b.48.1 | mu transposase, C-terminal domain | mu transposase, C-terminal domain barrel; n=6, S=8, greek-key |
| d.189.1 | PX domain | PX domain beta(3)-alpha(4); meander beta-sheet packed against array of helices; contains Pro-rich stretch |
| d.26.2 | Colicin E3 immunity protein | FKBP-like core: beta(2)-alpha-beta(2); antiparallel beta-sheet |
| d.197.1 | Protein-L-isoaspartyl O-methyltransferase, C-terminal domain | Protein-L-isoaspartyl O-methyltransferase, C-terminal domain beta-alpha-beta(4)-alpha-beta(2); 3 layers: beta/alpha/beta; buried helix |
| b.69.5 | RCC1/BLIP-II two families are clearly related but differ by the number of strands per blade ! | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.49.1 | N-terminal domain of alpha and beta subunits of F1 ATP synthase | Domain of alpha and beta subunits of F1 ATP synthase-like barrel, closed; n=6, S=8; greek-key |
| d.152.1 | Aldehyde ferredoxin oxidoreductase, N-terminal domain | Aldehyde ferredoxin oxidoreductase, N-terminal domain contains sandwich; duplication of alpha+beta motif with single mixed sheet ! motif: beta(2)-alpha-beta(3)-alpha-beta; strand order 216345, strands 1 and 6 are parallel |
| d.25.1 | Mitochondrial glycoprotein MAM33-like | Mitochondrial glycoprotein MAM33-like core: beta(7)-alpha(2); N- and C-terminal extensions form a coiled coil subdomain |
| e.54.1 | CbiD-like | CbiD-like 2 domains; (1) alpha+beta (res 1-192), a circularly permuted rS5 domain 2-like fold (scop_cf 54210); (2) alpha/beta with parallel beta-sheet of 4 strands, order 2134 |
| d.220.1 | Metal cation-transporting ATPase, ATP-binding domain N | Metal cation-transporting ATPase, ATP-binding domain N unusual fold; core: beta-alpha(2)-beta(3)-alpha(2)-beta(2); 6-stranded antiparallel beta-sheet, order: 165432 |
| d.110.5 | Pheromone-binding domain of LuxR-like quorum-sensing transcription factors alpha(2)-beta(2)-alpha(2)-beta(3)-alpha; possibly related to the PAS domain ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| d.58.21 | Molybdenum cofactor biosynthesis protein C, MoaC | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.147.1 | Methenyltetrahydromethanopterin cyclohydrolase | Methenyltetrahydromethanopterin cyclohydrolase consists of two alpha+beta subdomains |
| d.91.1 | N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 | N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 alpha-beta-alpha(2)-beta(3)-alpha; 3 layers a/b/a; antiparallel beta-sheet: 4123 |
| b.34.12 | BAH domain | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.74.1 | Carbonic anhydrase | Carbonic anhydrase single sheet; 10 strands |
| b.85.6 | MoeA C-terminal domain-like | beta-clip double-stranded ribbon sharply bent in two places; the ribbon ends form incomplete barrel; jelly-roll |
| d.259.1 | Hypothetical protein HI1480 | Hypothetical protein HI1480 beta-alpha(4)-beta-alpha-beta; segregated alpha-helical and beta-sheet subdomains; dimeric beta-sheet barrel: n=6, S=10 |
| d.33.1 | SecB-like | SecB-like beta(4)-alpha(2); two layers: alpha/beta; antiparallel sheet: order 1432 |
| d.74.3 | RBP11-like subunits of RNA polymerase form homo and heterodimers ! | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| a.262.1 | PriB N-terminal domain-like | PriB N-terminal domain-like multihelical bundle; contains buried central helix; also includes the PriA interface-forming insert subdomain (alpha+beta) |
| d.174.1 | Nitric oxide (NO) synthase oxygenase domain | Nitric oxide (NO) synthase oxygenase domain unusual fold |
| e.65.1 | VPA0735-like | VPA0735-like consists of a cluster of helices and two beta-sandwich domains of similar topology; probable duplication |
| d.125.1 | Ornithine decarboxylase C-terminal domain | Ornithine decarboxylase C-terminal domain complex alpha+beta motif |
| 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 |
| a.7.3 | Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain | Spectrin repeat-like 3 helices; bundle, closed, left-handed twist; up-and-down |
| d.9.2 | PhtA domain-like contains extra N-terminal beta-hairpin, like structurally similar archaeal "histone-like" proteins ( | IL8-like beta(3)-alpha |
| b.40.11 | TM0957-like extra N-terminal region and large insertion after strand 3 together form an alpha-helical subdomain ! | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.76.2 | Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain 11+ stranded sheet partly folded upon itself at the C-end ! | open-sided beta-meander single sheet formed by beta-hairpin repeats; exposed on both sides in the middle |
| c.56.3 | Peptidyl-tRNA hydrolase-like | Phosphorylase/hydrolase-like core: 3 layers, a/b/a ; mixed sheet of 5 strands: order 21354; strand 4 is antiparallel to the rest; contains crossover loops |
| d.248.1 | Coproporphyrinogen III oxidase | Coproporphyrinogen III oxidase alpha-beta(6)-alpha(2)-beta-alpha(n); 3 layers alpha/beta/alpha; antiparallel sheet: order 1234567 |
| d.58.46 | eEF1-gamma domain elaborated with additional structures ! | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.43.2 | Band 7/SPFH domain beta(2)-alpha(3)-beta ! | EF-Ts domain-like beta(2)-alpha(n)-beta; 2 layers a/b; antiparallel sheet: 123 |
| b.34.21 | Plus3-like | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| c.112.1 | Glycerol-3-phosphate (1)-acyltransferase some topological similarity to the dihydrofolate reductase fold ! | Glycerol-3-phosphate (1)-acyltransferase 3 layers: a/b/a; mixed beta-sheet of 9 strands, order 918736452; strands 1, 2 and 8 are antiparallel to the rest |
| 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) |
| c.51.6 | XCC0632-like short crossover loop between strands 2 and 3; the antiparallel part of the beta-sheet (strands 3, 4 and 5) and the C-terminal helix are quite long | Anticodon-binding domain-like 3 layers: a/b/a; mixed beta-sheet of five strands, order 21345; strand 4 is antiparallel to the rest |
| c.53.1 | Resolvase-like | Resolvase-like Core: 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 21345; strand 5 is antiparallel to the rest |
| a.39.4 | Hypothetical protein MTH865 | EF Hand-like core: 4 helices; array of 2 hairpins, opened |
| d.227.1 | OsmC-like | OsmC-like swapped dimer of beta(3)-alpha-beta(2)-alpha(2)-beta subunits; mixed beta-sheet; order: 321[4][5][6]; buried helix |
| d.50.5 | Rv2632c-like lacks the N-terminal helix; dimerises via the N-terminal strand and the C-terminal helix with the formation of a single beta-sheet wrapped around an antiparallel coiled coil ! | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| d.364.1 | PA1123-like | PA1123-like irregular array of short helices and two three-stranded beta-sheets |
| e.32.1 | Phase 1 flagellin | Phase 1 flagellin 3 domains: (1) alpha-helical bundle; (2&3) complex all-beta folds |
| 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.2.5 | Prefoldin | Long alpha-hairpin 2 helices; antiparallel hairpin, left-handed twist |
| e.43.1 | Subunits of heterodimeric actin filament capping protein Capz | Subunits of heterodimeric actin filament capping protein Capz 3 domains: (1) protozoan pheromone-like alpha-helical bundle; (2) rubredoxin-like domain lacking metal-binding site; (3) alpha+beta heterodimerisation domain: alpha-beta(5)-alpha |
| f.8.1 | Aerolisin/ETX pore-forming domain | Aerolisin/ETX pore-forming domain 3 domains: (1) alpha+beta; (2&3) all-beta |
| 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 |
| d.58.60 | Bacterial polysaccharide co-polymerase-like Decorated common fold with extra helical regions, which facilitate oligomerization | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| e.42.1 | L-A virus major coat protein | L-A virus major coat protein large protein without apparent domain division |
| a.119.1 | Lipoxigenase | Lipoxigenase multihelical ! large nearly all-alpha domain |
| e.45.1 | Antivirulence factor | Antivirulence factor contains a helical bundle with a buried helix and an alpha+beta insert domain |
| c.1.33 | EAL domain-like variant of the beta/alpha-barrel fold with strand 1 being antiparallel to the rest ! | TIM beta/alpha-barrel contains parallel beta-sheet barrel, closed; n=8, S=8; strand order 12345678 ! the first seven superfamilies have similar phosphate-binding sites |