| SCOP superfamily ID |
superfamiily description |
corresponding fold description |
| d.14.1 | Ribosomal protein S5 domain 2-like | Ribosomal protein S5 domain 2-like core: beta(3)-alpha-beta-alpha; 2 layers: alpha/beta; left-handed crossover |
| b.125.1 | Prokaryotic lipoproteins and lipoprotein localization factors | LolA-like prokaryotic lipoproteins and lipoprotein localization factors 11 stranded sheet partly folded in a corner-like structure filled with a few short helices |
| d.131.1 | DNA clamp | DNA clamp contains two helices and two beta sheets ! duplication: fold has internal pseudo two-fold symmetry |
| b.71.1 | Glycosyl hydrolase domain this domain is C-terminal to the catalytic beta/alpha barrel domain ! | Glycosyl hydrolase domain folded sheet; greek-key |
| d.32.1 | Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase | Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase beta-alpha-beta(3); 2 layers: alpha/beta |
| b.1.1 | Immunoglobulin | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.69.4 | WD40 repeat-like also contains 8-bladed propellers ! | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| 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.77.3 | Mannose-binding lectins | beta-Prism I consists of 3 4-stranded sheets; strands are parallel to the 3-fold axis ! duplication: has internal pseudo threefold symmetry |
| 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.122.1 | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase 8-stranded mixed beta-sheet; 2 layers: alpha/beta |
| d.26.1 | FKBP-like | FKBP-like core: beta(2)-alpha-beta(2); antiparallel beta-sheet |
| b.29.1 | Concanavalin A-like lectins/glucanases | Concanavalin A-like lectins/glucanases sandwich; 12-14 strands in 2 sheets; complex topology |
| 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.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 |
| b.55.1 | PH domain-like | PH domain-like barrel barrel, partly opened; n*=6, S*=12; meander; capped by an alpha-helix |
| d.223.1 | Polo-box domain Serine/threonine protein kinase-associated motif embedded in two distinct folds ! | Polo-box domain beta(6)-alpha; antiparallel beta-sheet, meander |
| 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 |
| 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 |
| b.30.5 | Galactose mutarotase-like probable carbohydrate-binding domain in enzymes acting on sugars ! | Supersandwich sandwich; 18 strands in 2 sheets |
| d.81.1 | Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain N-terminal domain is the classic Rossmann-fold ! | FwdE/GAPDH domain-like core: alpha-beta-alpha-beta(3); mixed sheet: 2134, strand 2 is parallel to strand 1 |
| b.60.1 | Lipocalins bind hydrophobic ligands in their interior ! | Lipocalins barrel, closed or opened; n=8, S=12; meander |
| 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 |
| b.1.2 | Fibronectin type III | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.7.3 | PHL pollen allergen | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| b.70.2 | C-terminal (heme d1) domain of cytochrome cd1-nitrite reductase | 8-bladed beta-propeller consists of eight 4-stranded beta-sheet motifs; meander ! also found in some members of the WD40-repeat superfamily |
| 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 |
| c.69.1 | alpha/beta-Hydrolases many members have left-handed crossover connection between strand 8 and additional strand 9 ! | alpha/beta-Hydrolases core: 3 layers, a/b/a; mixed beta-sheet of 8 strands, order 12435678, strand 2 is antiparallel to the rest |
| b.90.1 | Head-binding domain of phage P22 tailspike protein | Head-binding domain of phage P22 tailspike protein complex fold made of bifurcated and partly folded beta-sheet |
| 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 |
| b.116.1 | Viral chemokine binding protein m3 | Viral chemokine binding protein m3 consists of two different beta-sandwich domains of partial topological similarity to immunoglobulin-like folds |
| d.19.1 | MHC antigen-recognition domain | MHC antigen-recognition domain dimeric |
| 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.128.1 | Hypothetical protein YojF | Hypothetical protein YojF pseudobarrel; capped at one end by an alpha-helix |
| d.3.1 | Cysteine proteinases the constitute families differ by insertion into and circular permutation of the common catalytic core made of one alpha-helix and 3-strands of beta-sheet ! | Cysteine proteinases consists of one alpha-helix and 4 strands of antiparallel beta-sheet and contains the catalytic triad Cys-His-Asn |
| b.40.4 | Nucleic acid-binding proteins | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.64.1 | Mannose 6-phosphate receptor domain | Mannose 6-phosphate receptor domain barrel, partly open; n*=8, S*=10; one psi loop |
| 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.5.1 | RNase A-like can be classified as disulfide-rich ! | RNase A-like contains long curved beta-sheet and 3 helices |
| 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 |
| 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 |
| b.69.8 | Integrin alpha N-terminal domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| d.93.1 | SH2 domain | SH2-like 3 layers: a/b/a; antiparallel beta-sheet of 5 strands is flaked by two helices |
| b.68.9 | NHL repeat | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; 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 |
| 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.50.1 | dsRNA-binding domain-like | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| b.126.1 | Adsorption protein p2 | Adsorption protein p2 multisheet protein containing partial beta-propeller and beta-sandwich regions |
| c.3.1 | FAD/NAD(P)-binding domain | FAD/NAD(P)-binding domain core: 3 layers, b/b/a; central parallel beta-sheet of 5 strands, order 32145; top antiparallel beta-sheet of 3 strands, meander |
| 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 |
| b.15.1 | HSP20-like chaperones | HSP20-like chaperones sandwich; 8 strands in 2 sheets; greek-key |
| b.67.2 | Arabinanase/levansucrase/invertase | 5-bladed beta-propeller consists of five 4-stranded beta-sheet motifs; meander |
| d.104.1 | Class II aaRS and biotin synthetases | Class II aaRS and biotin synthetases contains large mixed beta-sheet |
| 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.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 |
| b.68.1 | Sialidases | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.69.7 | Peptidase/esterase 'gauge' domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.6.1 | Cupredoxins contains copper-binding site ! | Cupredoxin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands |
| c.72.1 | Ribokinase-like has extra strand located between strands 2 and 3 ! | 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 |
| b.69.6 | Clathrin heavy-chain terminal domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| 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 |
| b.1.13 | Superoxide reductase-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| d.159.1 | Metallo-dependent phosphatases different families of this superfamily are groupped in a single Pfam family, | Metallo-dependent phosphatases 4 layers: alpha/beta/beta/alpha; mixed beta sheets; contains duplication |
| 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 |
| 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) |
| 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 |
| e.18.1 | HydB/Nqo4-like | HydB/Nqo4-like 3 domains: (1) all-alpha; (2&3) alpha+beta |
| b.108.1 | Phage fibre proteins | Triple-stranded beta-helix (homo)trimer; each chain donates 3 beta-strands per turn of the helix |
| d.157.1 | Metallo-hydrolase/oxidoreductase | Metallo-hydrolase/oxidoreductase duplication of beta(4)-alpha-beta-alpha motif; 4 layers a/b/b/a; mixed beta-sheets |
| 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 |
| d.313.1 | Prenyltransferase-like the barrel channel harbours the substrate-binding site ! | Antiparallel beta/alpha barrel (PT-barrel) tandem repeat of five alpha(2)-beta(2) motifs; antiparallel beta-sheet barrel, closed; n=10, S=10; order 123456789A; there is a channel along the barrel axis |
| b.69.3 | Nitrous oxide reductase, N-terminal domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| d.347.1 | Acetoacetate decarboxylase-like | Acetoacetate decarboxylase-like complex fold: contains a 3-layer beta-sheet structure, which is folded in two conjoint barrels capped by helices; one rounded barrel has 7 strands, the other flattened barrel has 9 strands |
| f.4.3 | Porins | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| b.70.3 | DPP6 N-terminal domain-like | 8-bladed beta-propeller consists of eight 4-stranded beta-sheet motifs; meander ! also found in some members of the WD40-repeat superfamily |
| d.169.1 | C-type lectin-like | C-type lectin-like unusual fold |
| d.20.1 | UBC-like | UBC-like alpha-beta(4)-alpha(3); core: meander beta-sheet plus one helix 2 |
| b.34.13 | Chromo domain-like SH3-like barrel is capped by a C-terminal helix ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| d.38.1 | Thioesterase/thiol ester dehydrase-isomerase | Thioesterase/thiol ester dehydrase-isomerase core: beta-alpha-beta(4); 2 layers: alpha/beta |
| d.151.1 | DNase I-like | DNase I-like contains beta-sandwich; duplication of alpha+beta motif |
| b.50.1 | Acid proteases | Acid proteases barrel, closed; n=6, S=10, complex topology |
| 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 |
| b.127.1 | Baseplate structural protein gp8 | Baseplate structural protein gp8 multisheet protein with a mixture of beta-sandwich and beta-barrel features |
| b.1.8 | Cu,Zn superoxide dismutase-like has additional strand at N-terminus ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| b.69.2 | YVTN repeat-like/Quinoprotein amine dehydrogenase | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| 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 |
| 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.69.9 | Tricorn protease domain 2 distorted 7-bladed beta-propeller fold; possibly related to the N-terminal domain of tricorn protease (a 6-bladed beta-propeller) ! | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.70.1 | Quinoprotein alcohol dehydrogenase-like | 8-bladed beta-propeller consists of eight 4-stranded beta-sheet motifs; meander ! also found in some members of the WD40-repeat superfamily |
| c.56.5 | Zn-dependent exopeptidases core: mixed beta-sheet of 8 strands, order 12435867; strands 2, 6 & 7 are antiparallel to the rest ! | 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.66.1 | Hemopexin-like domain | 4-bladed beta-propeller consists of four 4-stranded beta-sheet motifs; meander |
| b.68.5 | YWTD domain | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.61.2 | beta-Barrel protease inhibitors | Streptavidin-like barrel, closed; n=8, S=10; meander |
| d.243.1 | Colicin D/E5 nuclease domain | Colicin D/E5 nuclease domain alpha(2)-beta(4)-alpha, 2 layers: alpha/beta, antiparallel beta sheet, meander |
| d.194.1 | CNF1/YfiH-like putative cysteine hydrolases | CNF1/YfiH-like putative cysteine hydrolases 4 layers: alpha/beta/beta/alpha; mixed beta sheets |
| b.82.1 | RmlC-like cupins | 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 |
| 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.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 |
| b.5.1 | alpha-Amylase inhibitor tendamistat | alpha-Amylase inhibitor tendamistat sandwich; 6 strands in 2 sheets |
| 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 |
| b.1.4 | beta-Galactosidase/glucuronidase domain | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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.207.1 | Thymidylate synthase-complementing protein Thy1 | Thymidylate synthase-complementing protein Thy1 complex alpha+beta fold; contains antiparallel 5-stranded beta-sheet: order 12354 |
| b.100.1 | Sortase | Sortase barrel, closed; n=8, S=10; mixed sheet; two overside connections |
| b.40.2 | Bacterial enterotoxins | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| d.39.1 | DLC | DLC core: beta-alpha(2)-beta-X-beta(2); 2 layers: alpha/beta; antiparallel beta-sheet: order 1342 |
| d.98.2 | BT0923-like Duplication: tandem repeat of two similar structural subdomains, which associate like the BLIP repeats but differ from them by transposition of the helices | BLIP-like alpha(2)-beta(4); 2 layers: alpha/beta |
| d.18.1 | ssDNA-binding transcriptional regulator domain | ssDNA-binding transcriptional regulator domain helix-swapped dimer of beta(4)-alpha motifs |
| 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") |
| 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.193.1 | Hsp33 domain | Hsp33 domain 3 layers: beta/alpha/beta; buried helix |
| 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 |
| 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) |
| 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.232.1 | Mago nashi protein | Mago nashi protein beta(4)-alpha-beta(2)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, order: 651234 |
| d.141.1 | Ribosomal protein L6 | Ribosomal protein L6 consists of two beta-sheets and one alpha-helix packed around single core |
| b.45.2 | PilZ domain-like | Split barrel-like barrel; n=6, S=10; greek-key |
| 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 |
| 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.13.1 | HIT-like | HIT-like alpha-beta(3)-alpha-beta(2); 3 layers: alpha/beta/alpha |
| b.2.5 | p53-like transcription factors | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| b.38.1 | Sm-like ribonucleoproteins | Sm-like fold core: barrel, open; n*=4, S*=8; meander; SH3-like topology |
| b.3.4 | Transthyretin (synonym: prealbumin) | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| e.1.1 | Serpins | Serpins contains a cluster of helices and a beta-sandwich |
| 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.331.1 | NE0471 N-terminal domain-like | NE0471 N-terminal domain-like beta(3)-alpha(n)-beta(3)-alpha; the two meander beta-sheets and helices are packed against the same core |
| 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.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 |
| 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 |
| b.74.1 | Carbonic anhydrase | Carbonic anhydrase single sheet; 10 strands |
| b.56.1 | Transcription factor IIA (TFIIA), beta-barrel domain dimer of non-identical beta-sheet domains ! | Transcription factor IIA (TFIIA), beta-barrel domain barrel, closed; n=6, S=12; mixed beta-sheet |
| b.160.1 | L,D-transpeptidase catalytic domain-like | L,D-transpeptidase catalytic domain-like barrel, closed; n=8, S=10; one overside connection |
| c.57.1 | Molybdenum cofactor biosynthesis proteins | Molybdenum cofactor biosynthesis proteins 3 layers: a/b/a; mixed beta-sheet of 5 strands; order: 21354, strand 5 is antiparallel to the rest; permutation of the Phosphorylase/hydrolase-like fold |
| d.67.1 | ThrRS/AlaRS common domain putative editing domain found in the N-terminal part of ThrRS, the C-terminal of AlaRS, and as a stand-alone protein; probable circular permutation of LuxS ( | RRF/tRNA synthetase additional domain-like core: alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta |
| d.165.1 | Ribosome inactivating proteins (RIP) | Ribosome inactivating proteins (RIP) contains mixed beta-sheet |
| b.134.1 | Smp-1-like | Smp-1-like sandwich; 9 strands in 2 sheets; greek-key/jelly-roll |
| b.137.1 | Rof/RNase P subunit-like | Rof/RNase P subunit-like core: barrel, open; n*=4, S*=8; meander; SH3-like topology; some similarity to the Sm-like fold |
| e.3.1 | beta-lactamase/transpeptidase-like | beta-lactamase/transpeptidase-like contains a cluster of helices and an alpha+beta sandwich |
| b.93.1 | Epsilon subunit of F1F0-ATP synthase N-terminal domain | Epsilon subunit of F1F0-ATP synthase N-terminal domain pseudobarrel: sandwich of two sheets packed at a positive interstrand angle and interconnected with many short turns |
| 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 |
| d.136.1 | Phospholipase D/nuclease | Phospholipase D/nuclease beta-alpha-beta-alpha-beta-alpha-beta(4)-alpha; mixed sheet: order 1765234 |
| 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 |
| d.222.1 | YbaB-like forms tight dimer of a 3-layer structure: beta/alpha/beta ! | YbaB-like core: alpha-beta(3)-alpha, 2 layers:alpha/beta, three-stranded antiparallel beta sheet, strand order 123 |
| b.1.20 | Tp47 lipoprotein, middle and C-terminal domains | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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.17.7 | Putative dsDNA mimic elaborated with additional structures; some similarity to Uracil-DNA glycosylase (UGI) and Nuclease A (NuiA) inhibitors ! | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| b.147.1 | BTV NS2-like ssRNA-binding domain | BTV NS2-like ssRNA-binding domain sandwich; 9 strands in 2 sheets; unusual topology with 2 crossover loops |
| b.176.1 | AttH-like | AttH-like duplication: two flattened beta-barrels of lipocalin-like topology are orthogonally packed with a pseudo twofold symmetry |
| 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 |
| d.47.1 | Ribosomal L11/L12e N-terminal domain | Ribosomal L11/L12e N-terminal domain beta-alpha(2)-beta(2); 2 layers, alpha/beta; antiparallel beta-sheet: order 123 |
| d.160.1 | Carbon-nitrogen hydrolase | Carbon-nitrogen hydrolase 4 layers: alpha/beta/beta/alpha; mixed beta sheets; contains duplication |
| 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 |
| d.109.1 | Actin depolymerizing proteins | Gelsolin-like 3 layers: a/b/a; contains mixed beta-sheet |
| b.26.1 | SMAD/FHA domain has a few short helices inserted in loops ! | SMAD/FHA domain sandwich; 11 strands in 2 sheets; greek-key |
| b.7.2 | Periplasmic chaperone C-domain | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| b.69.10 | 3-carboxy-cis,cis-mucoante lactonizing enzyme | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.43.3 | Translation proteins | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| b.61.3 | D-aminopeptidase, middle and C-terminal domains | Streptavidin-like barrel, closed; n=8, S=10; meander |
| d.98.1 | beta-lactamase-inhibitor protein, BLIP | BLIP-like alpha(2)-beta(4); 2 layers: alpha/beta |
| b.1.16 | Lamin A/C globular tail domain | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.24.1 | Hyaluronate lyase-like, C-terminal domain | Hyaluronate lyase-like, C-terminal domain sandwich, 10 strands in 2 sheets; "folded meander" |
| b.69.1 | Galactose oxidase, central domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| d.251.1 | Hypothetical protein YwqG | Hypothetical protein YwqG duplication: contains two similar beta-x-beta(4) motifs swapped with the first strands |
| d.198.2 | Arp2/3 complex subunits | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| b.92.1 | Composite domain of metallo-dependent hydrolases this domain is interrupted by the catalytic beta/alpha barrel domain ! | Composite domain of metallo-dependent hydrolases pseudobarrel; mixed sheet of 7 strand folded upon itself and "buckled" by two beta-turns |
| 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 |
| d.370.1 | BTG domain-like | BTG domain-like alpha(2)-beta-alpha(2)-beta(3); four-helical bundle, capped at one end by an antiparallel beta-sheet, order:1234 |
| 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 |
| 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 |
| e.60.1 | Thermophilic metalloprotease-like | Thermophilic metalloprotease-like consists of two domains; d1: alpha/beta (3 layers, a/b/a; parralel beta-sheet, order 2134); d2: pseudo beta-barrel capped by helices |
| b.157.1 | Hcp1-like probable biological unit is a ring-like hexamer containing a 24-stranded beta-barrel made of the subunit beta-sheets ! | Hcp1-like barrel, closed; n=6, S=12; contains extra, non-barrel strand 7 at the C-terminus |
| 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 |
| b.28.1 | Baculovirus p35 protein has a few helices inserted in loops ! | Baculovirus p35 protein sandwich; 14 strands in 2 sheets; greek-key |
| 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 |
| b.61.5 | Dipeptidyl peptidase I (cathepsin C), exclusion domain | Streptavidin-like barrel, closed; n=8, S=10; meander |
| d.9.1 | Interleukin 8-like chemokines form dimers with different dimerisation modes ! | IL8-like beta(3)-alpha |
| 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 |
| b.87.1 | LexA/Signal peptidase | LexA/Signal peptidase complex fold made of several coiled beta-sheets; contains an SH3-like barrel |
| 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.84.2 | Rudiment single hybrid motif | Barrel-sandwich hybrid sandwich of half-barrel shaped beta-sheets |
| 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 |
| e.52.1 | NAD kinase/diacylglycerol kinase-like | NAD kinase/diacylglycerol kinase-like 2 domains: d1 [alpha/beta; related to the PFK N-terminal domain (scop_sf 53784)]; d2 [all-beta; atypical beta-sandwich made of 4 structural repeats of beta(3) unit] |
| 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 |
| g.27.1 | FnI-like domain | FnI-like domain disulfide-rich, all-beta |
| d.383.1 | PG1388-like | PG1388-like consists of 2 alpha+beta subdomains, each having a meander beta-sheet; d1: alpha(2)-beta(7); d2: alpha(2)-beta(2)-alpha(2)-beta(2) |
| b.69.13 | Oligoxyloglucan reducing end-specific cellobiohydrolase duplication: # two beta-propeller domains are swapped with the N-terminal strands; similar domain arrangment to the Actin interacting protein 1 ( | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| d.166.1 | ADP-ribosylation | ADP-ribosylation unusual fold |
| d.110.6 | Sensory domain-like alpha(2)-beta(2)-alpha(2)-beta(3); 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.17.1 | Cystatin/monellin has a additional strand at the N-terminus ! | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| d.81.3 | FwdE-like contains extra N-terminal and C-terminal structures ! | FwdE/GAPDH domain-like core: alpha-beta-alpha-beta(3); mixed sheet: 2134, strand 2 is parallel to strand 1 |
| b.80.7 | beta-Roll superhelix turns are made of two short strands each ! | Single-stranded right-handed beta-helix superhelix turns are made of parallel beta-strands and (short) turns |
| b.38.4 | Dom34/Pelota N-terminal domain-like | Sm-like fold core: barrel, open; n*=4, S*=8; meander; SH3-like topology |
| 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.7.4 | Rab geranylgeranyltransferase alpha-subunit, insert domain | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| b.1.14 | Invasin/intimin cell-adhesion fragments | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.69.14 | Nucleoporin domain | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.3.6 | Aromatic compound dioxygenase | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| e.71.1 | AF1531-like | AF1531-like 2 domains; d1: incomplete barrel similar to the OB-fold domain of ribosomal L2 protein, d2: six helices, array |
| 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 |
| b.33.1 | ISP domain | ISP domain consists of two all-beta subdomains: conserved small domain has a rubredoxin-like fold; larger domain consists of 6 beta-stands packed in either sandwich of two 3-stranded sheets or closed barrel (n=6; S=8) |
| b.68.6 | Calcium-dependent phosphotriesterase | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| f.10.1 | Viral glycoprotein, central and dimerisation domains | Viral glycoprotein, central and dimerisation domains 2 intertwined domains; all-beta and alpha+beta |
| 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 |
| g.41.3 | Zinc beta-ribbon | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| d.24.1 | Pili subunits bacterial filament proteins ! | Pili subunits contains very long N-terminal helix, which end is packed against beta-sheet |
| b.68.4 | TolB, C-terminal domain | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.1.10 | Clathrin adaptor appendage domain contains an additional N-terminal strand ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.47.1 | Trypsin-like serine proteases | Trypsin-like serine proteases barrel, closed; n=6, S=8; greek-key ! duplication: consists of two domains of the same fold |
| b.106.1 | Phage tail proteins | Phage tail proteins core: barrel; n=6, S=10; greek-key; topologically similar to the FMN-binding split barrel |
| b.68.8 | Fucose-specific lectin | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.68.7 | Tricorn protease N-terminal domain possibly related to the second domain of tricorn protease (a distorted 7-bladed beta-propeller) ! | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| d.67.4 | General secretion pathway protein M, EpsM | RRF/tRNA synthetase additional domain-like core: alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta |
| b.21.1 | Virus attachment protein globular domain | Virus attachment protein globular domain sandwich, 10 strands in 2 sheets; greek-key |
| b.61.1 | Avidin/streptavidin | Streptavidin-like barrel, closed; n=8, S=10; meander |
| b.1.17 | Thiol:disulfide interchange protein DsbD, N-terminal domain (DsbD-alpha) | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| b.34.5 | Translation proteins SH3-like domain many known members contain KOW motif ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.1.18 | E set domains "Early" Ig-like fold families possibly related to the immunoglobulin and/or fibronectin type III superfamilies ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| d.218.1 | Nucleotidyltransferase | Nucleotidyltransferase core: alpha-beta-turn-beta-X-beta-(alpha); mixed beta-sheet, order of core strands: 123 |
| b.43.4 | Riboflavin synthase domain-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| 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 |
| 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.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 |
| b.131.1 | SPOC domain-like | SPOC domain-like barrel, closed; n=7, S=10; complex topology |
| b.1.21 | Fungal immunomodulatory protein, FIP | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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] |
| c.8.6 | Swiveling domain of dehydratase reactivase alpha subunit | 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.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.35.1 | Heme-binding protein A (HasA) | Heme-binding protein A (HasA) beta-alpha-beta(6)-alpha(2); antiparallel sheet: order 165432 |
| 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] |
| 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.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.17.3 | DsbC/DsbG N-terminal domain-like | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| b.89.1 | Cyanovirin-N duplication: tandem repeat of two homologous motifs made three stranded beta-sheet and beta-hairpins ! | Cyanovirin-N complex 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.27.1 | Soluble secreted chemokine inhibitor, VCCI | Soluble secreted chemokine inhibitor, VCCI sandwich; 11 strands in 2 sheets; greek-key |
| 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 |
| 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 |
| d.252.1 | CheC-like | CheC-like duplication: tandem repeat of two intertwined alpha-beta-(X)-beta(2) motifs |
| d.198.1 | Type III secretory system chaperone-like | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| b.1.9 | CBD9-like has additional strand at N-terminus; the active site in a similar topological location as the Cu,Zn SOD site ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.67.3 | Apyrase distorted propeller with an alpha helix inserted between the second and third blades ! | 5-bladed beta-propeller consists of five 4-stranded beta-sheet motifs; meander |
| d.130.1 | S-adenosylmethionine synthetase | S-adenosylmethionine synthetase duplication: consists of 3 similar intertwined domains ! structural repeat: beta-alpha-beta(2)-alpha-beta; two layers, alpha/beta |
| d.1.1 | Microbial ribonucleases | Microbial ribonucleases single helix packs against antiparallel beta-sheet |
| b.68.3 | Thermostable phytase (3-phytase) | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| d.21.1 | Diaminopimelate epimerase-like duplication: consists of two similar domain swapped with C-terminal strands ! | Diaminopimelate epimerase-like mixed beta-sheet folds into a barrel (n=8, S=14) around the central helix |
| 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.36.1 | Chalcone isomerase | Chalcone isomerase beta(3)-alpha(2)-beta-alpha(2)-beta3; 2 layers alpha/beta; antiparallel sheet: order 1234567 |
| d.129.1 | TATA-box binding protein-like | TBP-like beta-alpha-beta(4)-alpha |
| b.101.1 | Ribonuclease domain of colicin E3 | Ribonuclease domain of colicin E3 twisted meander beta-sheet of 6 strands |
| d.108.1 | Acyl-CoA N-acyltransferases (Nat) | Acyl-CoA N-acyltransferases (Nat) 3 layers: a/b/a; contains mixed beta-sheet |
| d.307.1 | Nqo5-like | Nqo5-like core: alpha-beta(2)-alpha-beta(3); 2 layers, a/b; mixed beta-sheet, order 12534, strands 2 and 5 are parallel |
| 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 |
| b.84.3 | Duplicated hybrid motif half-barrel sheet of 8 strands sandwiched with two 3-stranded sheets ! | Barrel-sandwich hybrid sandwich of half-barrel shaped beta-sheets |
| b.49.2 | Alanine racemase C-terminal domain-like the barrel is decorated with additional structures ! | Domain of alpha and beta subunits of F1 ATP synthase-like barrel, closed; n=6, S=8; greek-key |
| d.17.5 | Uracil-DNA glycosylase inhibitor protein has an additional strand at the C-terminus and a helix inserted after the first strand ! | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| 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 |
| c.8.5 | GroEL apical domain-like | 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 |
| b.152.1 | Flagellar hook protein flgE | Flagellar hook protein flgE consists of two different domains; d1: [complex fold made of bifurcated beta-sheets]; d2 (inserted into d1): [beta-sandwich; 8 strands in 2 sheets] |
| b.12.1 | Lipase/lipooxygenase domain (PLAT/LH2 domain) | Lipase/lipooxygenase domain (PLAT/LH2 domain) sandwich; 8 strands in 2 sheets; complex topology ! duplication: has weak internal pseudo twofold symmetry |
| 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 |
| d.376.1 | Lp2179-like | Lp2179-like beta(2)-alpha-beta(4)-alpha-beta; contains two antiparallel beta-sheets (orders: 127 and 3456) packed against the longer C-terminal helix |
| b.40.6 | MOP-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.40.13 | BC4932-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.7.1 | C2 domain (Calcium/lipid-binding domain, CaLB) two constituent families are related by circular permutation ! | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| d.106.1 | SCP-like | SCP-like alpha-beta(3)-(crossover)-beta-(alpha)-beta; 3 layers: a/b/a; antiparallel beta-sheet of 5 strands; order: 32145 |
| 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 |
| 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 |
| c.60.1 | Phosphoglycerate mutase-like | Phosphoglycerate mutase-like core: 3 layers, a/b/a; mixed beta-sheet of 6 strands, order 324156; strand 5 is antiparallel to the rest |
| c.8.7 | RraA-like structural similarity and possible distant homology to the phosphohistidine domain of pyruvate phosphate dikinase ! | 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 |
| b.88.1 | Mss4-like duplication: tandem repeat of two similar structural motifs ! | Mss4-like complex fold made of several coiled beta-sheets |
| b.30.2 | Amine oxidase catalytic domain | Supersandwich sandwich; 18 strands in 2 sheets |
| b.68.11 | Kelch motif | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| b.78.1 | alpha-D-mannose-specific plant lectins | beta-Prism II consists of 3 4-stranded sheets; strands are perpendicular to the 3-fold axis ! duplication: consists of two domains of this fold |
| d.338.1 | Oxysterol-binding protein-like | Oxysterol-binding protein-like core: large meander beta-sheet of 12 strands wrapped around the N-terminal (distorted) alpha-hairpin; some similarity to transmembrane beta-barrel proteins |
| 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 |
| b.18.1 | Galactose-binding domain-like | Galactose-binding domain-like sandwich; 9 strands in 2 sheets; jelly-roll |
| b.82.2 | Clavaminate synthase-like Iron and ketoglutarate-dependent enzymes; elaborated version of this common fold ! | 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.154.1 | DmpA/ArgJ-like convergent similarity to the Ntn amidohydrolases ! | DmpA/ArgJ-like duplication of beta(3)-alpha-beta-alpha motif; 4 layers: alpha/beta/beta/alpha |
| d.358.1 | YdfO-like | YdfO-like duplication: two alpha(2)-beta(3) motifs are related by pseudo twofold symmetry; single antiparrallel beta-sheet, order:321456 |
| d.17.2 | Amine oxidase N-terminal region | Cystatin-like Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet |
| d.109.2 | C-terminal, gelsolin-like domain of Sec23/24 | Gelsolin-like 3 layers: a/b/a; contains mixed beta-sheet |
| d.129.6 | KA1-like contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| 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 |
| b.40.16 | HIN-2000 domain-like duplication: tandem repeat of two OB-fold domains | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| g.30.1 | Carboxypeptidase inhibitor | Carboxypeptidase inhibitor disulfide-rich, alpha+beta |
| 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.350.1 | YcgL-like | YcgL-like beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel beta-sheet, order:3124 |
| b.119.1 | C-terminal autoproteolytic domain of nucleoporin nup98 | C-terminal autoproteolytic domain of nucleoporin nup98 multisheet protein with a mixture of beta-sandwich and beta-prism features |
| d.73.1 | RuBisCO, small subunit | RuBisCO, small subunit alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta |
| b.82.5 | TRAP-like shorter variant of double-helix; assembles in large ring-like structures containing from 9 to 11 domains ! | 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.121.1 | DNA topoisomerase I domain | DNA topoisomerase I domain beta(2)-alpha-beta-(alpha)-beta(2); left-handed crossover between strands 2 & 3 |
| b.61.7 | Extracellular hemoglobin linker subunit, receptor domain | Streptavidin-like barrel, closed; n=8, S=10; meander |
| b.34.7 | DNA-binding domain of retroviral integrase | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| 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 |
| d.113.1 | Nudix | Nudix beta(2)-alpha-beta(3)-alpha; 3 layers: alpha/beta/alpha; mixed sheet ! contains beta-grasp motif |
| 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.312.1 | TM1622-like | TM1622-like alpha-beta(3)-alpha-beta(4)-alpha; 3 layers, a/b/a; antiparallel beta-sheet, order: 1237654 |
| d.101.1 | Ribonuclease PH domain 2-like | Ribonuclease PH domain 2-like beta(2)-alpha-beta(2)-alpha; 3 layers: alpha/beta/alpha; antiparallel sheet: order 2134 |
| d.50.4 | Peptidyl-tRNA hydrolase domain-like | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| d.90.1 | FMN-dependent nitroreductase-like | FMN-dependent nitroreductase-like core: (alpha-beta-alpha-beta)2; 3 layers a/b/a; antiparallel beta-sheet: 1243 |
| d.290.1 | AF0104/ALDC/Ptd012-like characteristic metal ion (zinc)-binding motif in the putative active site ! | AF0104/ALDC/Ptd012-like duplication: consists of two similar beta-alpha-beta(4) motifs |
| b.84.1 | Single hybrid motif 7 to 8 strands in 2 beta-sheets ! | Barrel-sandwich hybrid sandwich of half-barrel shaped beta-sheets |
| 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.67.1 | Tachylectin-2 | 5-bladed beta-propeller consists of five 4-stranded beta-sheet motifs; meander |
| b.40.14 | HupF/HypC-like contains extra C-terminal helix packed against the beta-barrel side | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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.317.1 | YkuJ-like | YkuJ-like alpha-beta(4)-alpha; 2 layers a/b; antiparallel beta-sheet, order 1234 |
| d.67.3 | Ribosome recycling factor, RRF | RRF/tRNA synthetase additional domain-like core: alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta |
| d.110.3 | PYP-like sensor domain (PAS domain) alpha-beta(2)-alpha(2)-beta(3) ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| 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 |
| e.5.1 | Heme-dependent catalase-like | Heme-dependent catalase-like contains an (8,10) beta-barrel and an all-alpha domain |
| 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.1.7 | Actinoxanthin-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| e.48.1 | Major capsid protein VP5 | Major capsid protein VP5 large protein without apparent domain division |
| d.241.2 | Trigger factor ribosome-binding domain | Ribosome binding domain-like beta-(2)-alpha(2)-beta(2); 2 layers: beta/alpha; antiparallel beta-sheet: order 1243; topological similarity to the common core of ribosomal proteins L23 and L15e |
| d.50.3 | YcfA/nrd intein domain | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| e.44.1 | 2-methylcitrate dehydratase PrpD | 2-methylcitrate dehydratase PrpD consists of an all-alpha and alpha+beta domains |
| d.123.1 | Sporulation response regulatory protein Spo0B Histidine kinase-like fold lacking the kinase ATP-binding site ! | Sporulation response regulatory protein Spo0B core: alpha-beta-alpha-beta(2)-(alpha)-beta(2) |
| d.365.1 | Ava3019-like | Ava3019-like alpha(2)-beta-alpha-beta(4); 2 layers, a/b; antiparallel beta-sheet, order: 32145; similarity to the insert domain of Glucose 6-phosphate dehydrogenase-like family (sop_fa 55376) |
| b.169.1 | MFPT repeat-like | MFPT repeat-like consists of two similar pseudo barrel subdomains with structural similarity to a circularly permuted SAND domain (scop_fa 63764) |
| 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.145.1 | FAD-binding/transporter-associated domain-like | FAD-binding/transporter-associated domain-like consists of two alpha+beta subdomains |
| b.31.1 | EV matrix protein | EV matrix protein consists of two beta-sandwich domains of similar topologies |
| b.177.1 | YmcC-like | YmcC-like 12-stranded meander beta-sheet, folded into a deformed beta-barrel; topological similarity to the LolA-like fold (scop_cf 89391) |
| b.34.3 | Myosin S1 fragment, 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.27.1 | Ribosomal protein S16 | Ribosomal protein S16 beta(4)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet, order: 51234 |
| b.61.8 | YdhA-like | Streptavidin-like barrel, closed; n=8, S=10; meander |
| b.40.7 | CheW-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.1.15 | Integrin domains | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.19.1 | Viral protein domain forms homotrimers ! | Viral protein domain sandwich; 9 strands in 2 sheets; jelly-roll; form trimers |
| d.95.1 | Glucose permease domain IIB | Homing endonuclease-like alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243 |
| b.121.2 | Group II dsDNA viruses VP duplication: consists of two domains of this fold packed together like the nucleoplasmin subunits ! trimeric; in the trimers, the domains are arranged around pseudo six-fold axis ! | Nucleoplasmin-like/VP (viral coat and capsid proteins) sandwich; 8 strands in 2 sheets; jelly-roll; some members can have additional 1-2 strands ! characteristic interaction between the domains of this fold allows the formation of five-fold and pseudo six-fold assemblies |
| 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 |
| b.1.5 | Transglutaminase, two C-terminal domains | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.2.2 | Carbohydrate-binding domain | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| 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.40.10 | Hypothetical protein YgiW | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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) |
| b.68.2 | Soluble quinoprotein glucose dehydrogenase | 6-bladed beta-propeller consists of six 4-stranded beta-sheet motifs; meander |
| d.236.1 | DNA-binding protein Tfx | DNA-binding protein Tfx alpha(3)-beta-alpha(2)-beta(2); 2 layers alpha/beta, 3-stranded antiparallel beta-sheet; order 123 |
| b.30.6 | V-region of surface antigen I/II (SA I/II, PAC) | Supersandwich sandwich; 18 strands in 2 sheets |
| d.294.1 | EndoU-like similarity to the RNase A-like superfamily ( | EndoU-like comprises several helices and two three-stranded antiparallel beta-sheets; similar architecture to the RNase A-like fold (scop_cf 54075) |
| 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.95.2 | Homing endonucleases | Homing endonuclease-like alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243 |
| 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 |
| b.44.1 | EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain probably related to the second domain and its superfamiy by a circular permutation ! | Elongation factor/aminomethyltransferase common domain barrel, closed; n=6, S=10; greek-key |
| b.38.5 | TrmB C-terminal domain-like sugar-binding domain; permuted OB-fold? | Sm-like fold core: barrel, open; n*=4, S*=8; meander; SH3-like topology |
| 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 |
| b.114.1 | N-utilization substance G protein NusG, insert domain | N-utilization substance G protein NusG, insert domain sandwich; 8 strands in 2 sheets; meander |
| 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.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 |
| d.310.1 | VC0467-like | VC0467-like complex fold; contains bifurcated beta-sheet structure folded into pseudo barrel |
| b.34.9 | Tudor/PWWP/MBT | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| 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.82.3 | Hypothetical protein c14orf129, hspc210 | N domain of copper amine oxidase-like alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet |
| 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 |
| b.65.1 | Rap30/74 interaction domains | triple barrel dimer of two non-identical subunits; forms two similar barrels, n=8, S=10 each, that are fused together with the formation of third barrel, n=6, S=8 |
| 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 |
| b.2.4 | Alpha-macroglobulin receptor domain | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| b.2.3 | Bacterial adhesins | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| f.7.1 | Lipovitellin-phosvitin complex; beta-sheet shell regions | Lipovitellin-phosvitin complex; beta-sheet shell regions contains several large open beta-sheets |
| b.145.1 | AXH domain | AXH domain pseudobarrel; some similarity to OB-fold |
| b.130.1 | Heat shock protein 70kD (HSP70), peptide-binding domain | Heat shock protein 70kD (HSP70), peptide-binding domain beta-sandwich: 8 strands in 2 sheets |
| 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.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 |
| b.133.1 | Dextranase, N-terminal domain | Dextranase, N-terminal domain sandwich; 9 strands in 2 sheets; greek-key |
| d.79.1 | YjgF-like forms trimers with three closely packed beta-sheets; possibly related to the IspF ( | Bacillus chorismate mutase-like core: beta-alpha-beta-alpha-beta(2); mixed beta-sheet: order: 1423, strand 4 is antiparallel to the rest |
| d.210.1 | Argininosuccinate synthetase, C-terminal domain | Argininosuccinate synthetase, C-terminal domain unusual fold |
| d.54.1 | Enolase N-terminal domain-like | Enolase N-terminal domain-like beta(3)-alpha(3); meander and up-and-down bundle |
| 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 |
| b.82.6 | Thiamin pyrophosphokinase, substrate-binding domain | 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.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 |
| b.77.1 | Vitelline membrane outer protein-I (VMO-I) | beta-Prism I consists of 3 4-stranded sheets; strands are parallel to the 3-fold axis ! duplication: has internal pseudo threefold symmetry |
| 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.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 |
| b.42.1 | Cytokine | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| b.35.2 | SacY-like RNA-binding domain | GroES-like contains barrel, partly opened; n*=4, S*=8; meander |
| 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 |
| b.61.4 | Quinohemoprotein amine dehydrogenase A chain, domain 3 | Streptavidin-like barrel, closed; n=8, S=10; meander |
| d.128.1 | Glutamine synthetase/guanido kinase | Glutamine synthetase/guanido kinase duplication: common core consists of two beta-alpha-beta2-alpha repeats |
| b.44.2 | Aminomethyltransferase beta-barrel domain | Elongation factor/aminomethyltransferase common domain barrel, closed; n=6, S=10; greek-key |
| d.163.1 | DNA breaking-rejoining enzymes | DNA breaking-rejoining enzymes core: alpha3-beta3-alpha4; one side of beta-sheet is exposed |
| d.58.2 | Aspartate carbamoyltransferase, Regulatory-chain, N-terminal domain | Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 |
| d.110.8 | YeeU-like beta(2)-alpha-beta(3); 2 layers, a/b; there is an oligomerization interface instead of the 'missing' helical layer ! | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| d.318.1 | SARS receptor-binding domain-like | SARS receptor-binding domain-like core: 3 layers, a/b/a; antiparallel beta-sheet of 5 strands, order 13542 |
| 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.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 |
| b.98.1 | Leukotriene A4 hydrolase N-terminal domain | Leukotriene A4 hydrolase N-terminal domain duplication: two beta-sandwiches of similar topologies are fused together in a single three beta-sheet domain |
| b.159.2 | SO1590-like | AOC barrel-like barrel, closed; n=8, S=10; meander; mirrored (reversed) topology to the Spreptavidin-like and Lipocalin-like folds |
| g.41.7 | Aspartate carbamoyltransferase, Regulatory-chain, C-terminal domain | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| b.17.1 | PEBP-like | PEBP-like sandwich; 8 strands in 2 sheets; greek-key: partial topological similarity to immunoglobulin-like folds |
| b.34.1 | C-terminal domain of transcriptional repressors the N-terminal domains of these repressors bind DNA ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.163.1 | Bacteriophage trimeric proteins domain found in phage proteins that form trimers, but is not involved in the trimerisation ! | Pseudo beta-prism beta-sandwich with one regular beta-sheet and the other beta-sheet bent in the middle with a set of aligned beta-bulges |
| b.144.1 | Trimeric adhesin | Trimeric adhesin trimer; contains two different beta-prism-like domains connected by an linker subdomain of less regular structure |
| b.136.1 | SspB-like | SspB-like core: barrel, open; n*=4, S*=8; meander; SH3-like topology; some similarity to the Sm-like fold |
| f.4.1 | OMPA-like forms (8,10) barrel ! | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| 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.369.1 | SMI1/KNR4-like | SMI1/KNR4-like alpha(4)-beta(4)-alpha; 3 layers: a/b/a; antiparallel beta-sheet, order 1234(meander) |
| 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 |
| b.122.1 | PUA domain-like | PUA domain-like pseudobarrel; mixed folded sheet of 5 strands; order 13452; strand 1 and 3 are parallel to each other |
| d.62.1 | Pepsin inhibitor-3 | Pepsin inhibitor-3 duplication of beta(3)-alpha(2) motif: meander beta sheets form barrel-like structure |
| e.59.1 | FdhE-like | FdhE-like consists on the N-terminal five-helical bundle, a tandem repeat of two rubredoxin-like domains and the C-terminal helix packed together |
| g.18.1 | Complement control module/SCR domain | Complement control module/SCR domain disulfide-rich all-beta fold |
| 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 |
| d.274.1 | Hypothetical protein PF0899 possibly related to Major capsid protein gp5 ( | Hypothetical protein PF0899 alpha-beta-alpha-beta(4); 2 layers: a/b; mixed beta-sheet, order 23145, strands 1 and 3 are parallel; similar to the GAPDH C-terminal domain-like fold (scop_cf 55346) |
| b.80.3 | Cell-division inhibitor MinC, C-terminal domain superhelix turns are made of three short strands each ! | Single-stranded right-handed beta-helix superhelix turns are made of parallel beta-strands and (short) turns |
| b.150.1 | Putative glucosidase YicI, C-terminal domain | Putative glucosidase YicI, C-terminal domain sandwich; 10 strands in two sheets |
| b.11.1 | gamma-Crystallin-like | gamma-Crystallin-like sandwich; 8 strands in 2 sheets; greek-key ! duplication: has internal pseudo twofold symmetry |
| b.72.2 | Carbohydrate binding domain | WW domain-like core: 3-stranded meander beta-sheet |
| b.69.11 | Putative isomerase YbhE | 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander |
| b.42.5 | Actin-crosslinking proteins | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| b.111.1 | Small protein B (SmpB) | Small protein B (SmpB) barrel, closed; n=6, S=8, greek-key, partial similarity to the OB-fold |
| 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.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.298.1 | RelE-like Toxin component of plasmid stabilisation system ! | RelE-like beta-alpha(2)-beta(4), 2 layers; a/b, antiparallel beta-sheet; order 15432 |
| 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 |
| 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.64.1 | eIF1-like | eIF1-like beta(2)-alpha-beta(2)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet: order 51243 |
| b.40.3 | TIMP-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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 |
| d.233.1 | Inhibitor of vertebrate lysozyme, Ivy | Inhibitor of vertebrate lysozyme, Ivy alpha(2)-beta(5)-alpha(2); 3 layers a/b/a; meander beta-sheet |
| 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 |
| 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 |
| b.34.10 | Cap-Gly 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.43.5 | Riboflavin kinase-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| d.110.10 | YNR034W-A-like | Profilin-like core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha |
| b.36.1 | PDZ domain-like peptide-binding domain ! | PDZ domain-like contains barrel, partly opened; n*=4, S*=8; meander; capped by alpha-helix |
| d.60.1 | Probable bacterial effector-binding domain | Probable bacterial effector-binding domain duplication of beta-alpha-beta(2) motif: antiparallel beta sheet forms barrel (n=6, S=12) |
| c.87.1 | UDP-Glycosyltransferase/glycogen phosphorylase | UDP-Glycosyltransferase/glycogen phosphorylase consists of two non-similar domains with 3 layers (a/b/a) each ! domain 1: parallel beta-sheet of 7 strands, order 3214567 ! domain 2: parallel beta-sheet of 6 strands, order 321456 |
| b.23.3 | Acetamidase/Formamidase-like decorated fold with additional structures; contains extra C-terminal alpha+beta subdomain: beta(2)-alpha(2)-beta(2): antiparallel beta-sheet, order 1243 ! | CUB-like sandwich, 10 strands in 2 sheets; jelly-roll |
| b.34.19 | Mib/herc2 domain-like | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| 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) |
| b.140.1 | Replicase NSP9 | Replicase NSP9 barrel; n=6, S=8, greek-key; similar to one trypsin-like protease barrel |
| d.179.1 | Substrate-binding domain of HMG-CoA reductase | Substrate-binding domain of HMG-CoA reductase unusual fold |
| d.261.1 | Hypothetical protein PH1602 | Hypothetical protein PH1602 complex alpha+beta fold; contains a region of similarity to the ferredoxin-like fold |
| e.13.1 | DNA primase core | DNA primase core 2 domains: (1) alpha+beta; (2) toprim alpha/beta |
| b.34.4 | Electron transport accessory proteins | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.45.3 | YkvR-like provisional classification, pending better resolution structures | Split barrel-like barrel; n=6, S=10; greek-key |
| 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 |
| c.1.28 | Radical SAM enzymes common Fe-S cluster and SAM binding sites are embedded into complete or incomplete beta/alpha-barrel ! | 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.1.28 | NEAT domain-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.58.1 | PK beta-barrel domain-like | PK beta-barrel domain-like barrel, closed; n=7, S=10; complex topology |
| b.72.1 | WW domain | WW domain-like core: 3-stranded meander beta-sheet |
| e.6.1 | Acyl-CoA dehydrogenase NM domain-like flavoprotein: binds FAD; constituent families differ in the numbers of C-terminal domains (four-helical bundles) ! | Acyl-CoA dehydrogenase NM domain-like 2 domains: (1) all-alpha: 5 helices; (2) contains an open beta-sheet barrel: n*=5, S*=8; complex topology |
| b.34.6 | Cell growth inhibitor/plasmid maintenance toxic component contains insert beta-sheet subdomain and C-terminal helix ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.40.8 | gp5 N-terminal domain-like | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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.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 |
| e.32.1 | Phase 1 flagellin | Phase 1 flagellin 3 domains: (1) alpha-helical bundle; (2&3) complex all-beta folds |
| 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.40.9 | Heme chaperone CcmE | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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 |
| d.66.1 | Alpha-L RNA-binding motif common motif in otherwise different folds ! | Alpha-L RNA-binding motif alpha(2)-beta(2)-loop-beta; 2 layers: alpha/beta |
| d.50.2 | Porphobilinogen deaminase (hydroxymethylbilane synthase), C-terminal domain | dsRBD-like alpha-beta(3)-alpha; 2 layers: alpha/beta |
| d.183.1 | Major capsid protein gp5 possibly related to the hypothetical protein PF0899 superfamily ( | Major capsid protein gp5 unusual fold; contains PF0899-like core, decorated with additional structure |
| b.172.1 | YopX-like conmrises proteins of plasmid and phage origins | YopX-like consists of two domains: the N-terminal dimerisation domain of variable structure and the C-terminal domain with similarity to the SH3-like fold |
| 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.2.1 | Lysozyme-like | Lysozyme-like common alpha+beta motif for the active site region |
| d.26.3 | Chitinase insertion domain | FKBP-like core: beta(2)-alpha-beta(2); antiparallel beta-sheet |
| g.4.1 | PMP inhibitors | PMP inhibitors disulfide-rich fold; all-beta: 3 antiparallel strands |
| d.219.1 | PP2C-like contain binuclear metal (Mn) centre ! | PP2C-like 4 layers: alpha/beta/beta/alpha; antiparallel beta sheets |
| e.56.1 | YaeB-like | YaeB-like 2 domains; d1: [beta-barrel (n=6, S=10), similar to the Reductase/isomerase/elongation factor common domain fold (scop_cf 50412), provides homodimerisation interface]; d2: [alpha+beta (disordered)] |
| d.278.1 | Ligand-binding domain in the NO signalling and Golgi transport | Ligand-binding domain in the NO signalling and Golgi transport an N-terminal helical bundle and the C-terminal alpha-beta(2)-alpha-beta(2) subdomain enclose a ligand-binding cavity |
| b.40.1 | Staphylococcal nuclease | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| 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.198.4 | YdhG-like some similarity to YjbR-like (scop_sf 136320) | Secretion chaperone-like alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta |
| e.61.1 | ImpE-like | ImpE-like consists of two domains; d1: right-handed superhelix of five helices; d2: pseudo beta-barrel containing structurally similar part to the "Histone-like" proteins from archaea (scop_fa 54161) |
| b.41.1 | PRC-barrel domain | PRC-barrel domain core: barrel, partly opened; n*=5, S*=8; meander |
| d.305.1 | NAP-like | NAP-like core: central meander 4-stranded beta-sheet (order: 1234) transversed by a C-terminal helix |
| b.3.1 | Starch-binding domain-like | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| a.119.1 | Lipoxigenase | Lipoxigenase multihelical ! large nearly all-alpha domain |
| d.189.1 | PX domain | PX domain beta(3)-alpha(4); meander beta-sheet packed against array of helices; contains Pro-rich stretch |
| 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 |
| b.95.1 | Ganglioside M2 (gm2) activator | Ganglioside M2 (gm2) activator sandwich; 8 strands in 2 sheets; greek-key: partial topological similarity to immunoglobulin-like folds |
| 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.34.2 | SH3-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.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 |
| f.46.1 | HlyD-like secretion proteins | HlyD-like secretion proteins consists of three domains: beta-barrel (res. 29-38,170-259; scop_cf 50412); barrel-sandwich hybrid (39-72,135-169; scop_sf 51230) and long alpha-hairpin (73-134; scop_cf 46556) |
| 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.127.1 | Creatinase/aminopeptidase | Creatinase/aminopeptidase duplication: composed of two very similar alpha+beta folds |
| d.172.1 | gp120 core | gp120 core unusual fold |
| 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 |
| b.43.2 | FucI/AraA C-terminal domain-like | Reductase/isomerase/elongation factor common domain barrel, closed; n=6, S=10; greek-key |
| b.62.1 | Cyclophilin-like | Cyclophilin-like barrel, closed; n=8, S=10; complex topology |
| 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 |
| b.141.1 | Bacterial fluorinating enzyme, C-terminal domain | Bacterial fluorinating enzyme, C-terminal domain barrel, closed; n=7, S=10; greek-key topology; one overside connection |
| 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.267.1 | Hypothetical protein SAV1430 | Hypothetical protein SAV1430 beta(3)-alpha-beta(2)-alpha; 2 layers, alpha/beta; antiparallel beta-sheet, order: 12543 |
| e.70.1 | MalF N-terminal region-like | MalF N-terminal region-like consists of 3 N-terminal transmembrane helices, an alpha+beta linker domain and a beta-barrel (n=7; S=8) with one overside loop |
| f.4.4 | OMPT-like forms (10,12) barrel ! | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| c.153.1 | YerB-like | YerB-like 3 layers: b/b/a; central mixed beta-sheet of 9 strands, order 541329678; strands 3 and 7 are antiparallel to the rest; an unusual "over the other end" connection between strands 3 and 4 |
| d.87.2 | CO dehydrogenase flavoprotein C-terminal domain-like | CO dehydrogenase flavoprotein C-domain-like core: beta(3,4)-alpha(3); alpha+beta sandwich |
| b.151.1 | CsrA-like | CsrA-like sandwich; 10 strands in 2 sheets; intertwined dimer (segment-swapped, 5-stranded greek-key sandwich?) |
| d.190.1 | Chorismate lyase-like | Chorismate lyase-like duplication of alpha(2)-beta(3) motif; antiparallel beta sheet, order 123654 |
| 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 |
| 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 |
| b.42.4 | STI-like | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| d.78.1 | RPB5-like RNA polymerase subunit | RPB5-like RNA polymerase subunit core: beta-alpha-beta-alpha-beta(2); 2 layers, alpha/beta |
| 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 |
| b.42.2 | Ricin B-like lectins | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| 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.85.1 | RNA bacteriophage capsid protein | RNA bacteriophage capsid protein 6-standed beta-sheet followed with 2 helices; meander |
| b.7.5 | Smr-associated domain-like | C2 domain-like sandwich; 8 strands in 2 sheets; greek-key |
| d.177.1 | FAH | FAH unusual fold; contains 3 layers of beta-sheet structure |
| d.316.1 | MK0786-like probable biological unit is a teramer; all subunit interfaces are provided by helices ! | MK0786-like alpha(2)-beta(4); 2 layers: a/b; antiparallel beta-sheet, order 1234 (meander) |
| d.221.1 | Nuclease A inhibitor (NuiA) some structural similarity to Uracil-DNA glycosylase inhibitor and putative dsDNA mimic HI1450 of the cystatin-like fold ! | Nuclease A inhibitor (NuiA) alpha-beta-alpha-beta-alpha(2)-beta(3); antiparallel beta-sheet; order: 15432 |
| d.241.1 | Translation initiation factor 2 beta, aIF2beta, N-terminal domain | Ribosome binding domain-like beta-(2)-alpha(2)-beta(2); 2 layers: beta/alpha; antiparallel beta-sheet: order 1243; topological similarity to the common core of ribosomal proteins L23 and L15e |
| b.34.11 | Prokaryotic SH3-related 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.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 |
| f.47.1 | VP4 membrane interaction domain | VP4 membrane interaction domain 2 domains; d1: complexed all-beta fold; d2: coiled-coil (trimeric) helical region |
| b.3.5 | Cna protein B-type domain | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| b.35.1 | GroES-like | GroES-like contains barrel, partly opened; n*=4, S*=8; meander |
| 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 |
| b.46.1 | FMT C-terminal domain-like | FMT C-terminal domain-like barrel, open; n*=6, S*=10; greek-key |
| d.74.5 | PH0987 N-terminal domain-like | DCoH-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| b.25.1 | Osmotin, thaumatin-like protein has two smaller insertion domains ! | Osmotin, thaumatin-like protein sandwich; 11 strands in 2 sheets |
| d.129.4 | Cell-division protein ZipA, C-terminal domain contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| e.24.1 | Ribosomal protein L1 | Ribosomal protein L1 2 domains: (1) alpha+beta; (2) alpha/beta (interrupts domain 1) |
| g.41.8 | Zn-binding ribosomal proteins | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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 |
| b.54.1 | Core binding factor beta, CBF | Core binding factor beta, CBF barrel, closed; n=6, S=10; meander; capped at both ends by alpha-helices |
| 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 |
| b.37.1 | N-terminal domains of the minor coat protein g3p | N-terminal domains of the minor coat protein g3p core: barrel, in some members open; n*=4, S*=8; meander |
| d.170.1 | SRCR-like | SRCR-like unusual fold; disulfide-rich; core: beta-x-alpha-beta-loop-beta |
| d.84.1 | Subtilisin inhibitor | Subtilisin inhibitor alpha+beta sandwich |
| d.10.1 | DNA-binding domain | DNA-binding domain beta(3)-alpha; 2 layers: alpha/beta |
| b.166.1 | MAL13P1.257-like | MAL13P1.257-like complex fold; duplication: consists of two intertwinned structural repeats related by pseudo dyad |
| d.215.1 | Smc hinge domain | Smc hinge domain consists of 2 different alpha+beta subdomains; forms subdomain-swapped dimers |
| 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 |
| 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) |
| 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.289.1 | WWE domain | WWE domain beta(2)-alpha-beta(4); antiparallel folded beta-sheet (half-barrel), order 216543 |
| d.200.1 | Integrin beta tail domain | Integrin beta tail domain alpha-beta-loop-beta(3); loop across free side of beta-sheet |
| g.52.1 | Inhibitor of apoptosis (IAP) repeat | Inhibitor of apoptosis (IAP) repeat metal(zinc)-bound alpha+beta fold |
| b.91.1 | E2 regulatory, transactivation domain | E2 regulatory, transactivation domain complex fold made of bifurcated and coiled beta-sheets |
| g.79.1 | WRKY DNA-binding domain | WRKY DNA-binding domain zinc-bound 4-stranded meander beta-sheet, distinct from the beta-ribbon motifs |
| d.229.1 | MesJ substrate recognition domain-like | MesJ substrate recognition domain-like beta-alpha(2)-beta(3); 2 layers: a/b; antiparallel beta-sheet, order:1432 |
| d.171.1 | Fibrinogen C-terminal domain-like | Fibrinogen C-terminal domain-like unusual fold |
| d.323.1 | Phage tail protein-like Can form ring, tube-like oligomers, where the subunit beta-sheets are joined in a single beta-sheet (or barrel) ! | Phage tail protein-like alpha-beta-X-beta(2)-alpha-beta(2); 2 layers: a/b; mixed beta-sheet: order 12354, strands 1 and 2 are parallel |
| d.247.1 | Chromosomal protein MC1 | Chromosomal protein MC1 beta(2)-alpha-beta(3); 2 layers: alpha/beta |
| b.118.1 | FAS1 domain | FAS1 domain core: barrel, closed; n=7, S=12; meander |
| b.1.22 | ASF1-like contains extra C-terminal strand ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| b.173.1 | NifT/FixU-like | NifT/FixU barrel-like barrel, closed, n=6, S=10; meander |
| d.359.1 | BH3703-like | BH3703-like alpha-beta(3)-alpha-beta(2)-alpha(2); antiparallel beta-sheet, order:32145; duplication: two alpha-beta(2) structural repeats are arranged with pseudo twofold symmetry |
| 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 |
| d.12.1 | Ribosomal proteins S24e, L23 and L15e | Ribosomal proteins S24e, L23 and L15e beta-(alpha)-beta-alpha-beta(2); 3 layers: alpha/beta/alpha; antiparallel beta-sheet: order 1243 |
| b.2.8 | beta-sandwich domain of Sec23/24 | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| 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.224.1 | SufE/NifU iron-sulfur cluster assembly proteins ! | SufE/NifU alpha(2)-beta(3)-alpha(3); 2 layers alpha/beta, 3-stranded antiparallel beta-sheet; order 123 |
| 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.83.1 | Bactericidal permeability-increasing protein, BPI duplication: consists of two clear structural repeats of this fold also containing an extra C-terminal beta-hairpin ! | Aha1/BPI domain-like core: [beta]-alpha-beta(5)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, meander |
| 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 |
| c.88.1 | Glutaminase/Asparaginase | Glutaminase/Asparaginase consists of two non-similar alpha/beta domains, 3 layers (a/b/a) each ! Domain 1 has mixed beta-sheet of 6 strands, order 213456, strand 6 is antiparallel to the rest; left-handed crossover connection between strands 4 and 5 ! Domain 2 has parallel beta-sheet of 4 strands, order 1234 |
| d.174.1 | Nitric oxide (NO) synthase oxygenase domain | Nitric oxide (NO) synthase oxygenase domain unusual fold |
| d.366.1 | SpoVG-like probable biological unit is a hexamer (trimer of dimers) | SpoVG-like beta(5)-alpha; comprises a coiled antiparallel beta-sheet (order: 12345) packed against the C-terminal helix; the extensions of strands 4 and 5 form an isolated beta-hairpin |
| b.61.6 | YceI-like | Streptavidin-like barrel, closed; n=8, S=10; meander |
| b.39.1 | Ribosomal protein L14 | Ribosomal protein L14 barrel, closed; n=5, S=8, meander |
| g.60.1 | TSP-1 type 1 repeat | TSP-1 type 1 repeat disulfide-rich fold; all-beta: 3 antiparallel strands |
| b.38.2 | YhbC-like, C-terminal domain | Sm-like fold core: barrel, open; n*=4, S*=8; meander; SH3-like topology |
| d.13.2 | Rotavirus NSP2 fragment, C-terminal domain | HIT-like alpha-beta(3)-alpha-beta(2); 3 layers: alpha/beta/alpha |
| 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.375.1 | NE1680-like | NE1680-like beta(2)-alpha-beta-alpha-beta; 2 layers, a/b; antiparallel sheet, order 3124 |
| d.206.1 | YggU-like | YggU-like beta(2)-loop-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243; some similarity to the Homing endonuclease-like fold |
| 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 |
| c.58.1 | Aminoacid dehydrogenase-like, N-terminal domain | Aminoacid dehydrogenase-like, N-terminal domain core: 3 layers: a/b/a; parallel beta-sheet of 4 strands; 2134 |
| 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.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.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.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 |
| 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 |
| b.63.1 | Oncogene products duplication: N- and C-terminal halves are related by pseudo dyad ! | Oncogene products barrel, closed; n=8, S=10; one overside connection |
| d.117.1 | Thymidylate synthase/dCMP hydroxymethylase | Thymidylate synthase/dCMP hydroxymethylase contains large mixed beta-sheet |
| 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) |
| c.122.1 | L-sulfolactate dehydrogenase-like topological similarity to the domain 2 of TM1585 ! | L-sulfolactate dehydrogenase-like core: 3 layers, a/b/a; mixed sheet of 7 strands, order 1237456; strands 1, 6 and 7 are antiparallel to the rest |
| b.105.1 | Penicillin-binding protein associated domain | Penicillin-binding protein associated domain sandwich; 6 strands in 2 sheets |
| 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.29.1 | Ribosomal protein L31e | Ribosomal protein L31e beta-alpha-beta-(alpha)-beta(2); 2 layers: alpha/beta; mixed beta-sheet, order: 1342 |
| b.22.1 | TNF-like | TNF-like sandwich, 10 strands in 2 sheets; jelly-roll |
| 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 |
| 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) |
| e.66.1 | Api92-like | Api92-like 2 domains; d1: [alpha+beta with similarity to ferredoxin-like fold]; d2: [6 helices, bundle, one buried central helix], inserted into d1 |
| b.40.15 | EutN/CcmL-like homohexameric unit | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.40.12 | NfeD domain-like close structural similarity to some members of the Nucleic acid-binding OB-fold proteins, possibly related to this superfamily ! | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.42.7 | DNA-binding protein LAG-1 (CSL) contains rudiment hairpin triplet lacking one hairpin ! | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| b.42.3 | Agglutinin this superfamily is distinct from the ricin B-like lectin superfamily ! | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| c.144.1 | RibA-like | RibA-like 3 layers: a/b/a; mixed beta-sheet of 7 strands, order 1235467, strands 1 and 3 are antiparallel to the rest; partial topological similarity to some alpha/beta hydrolases (scop_cf 53473) |
| a.113.1 | DNA repair protein MutS, domain III | DNA repair protein MutS, domain III multihelical; consists of 2 all-alpha subdomains |
| b.115.1 | Calcium-mediated lectin | Calcium-mediated lectin sandwich; 9 strands in 2 sheets; greek-key |
| c.135.1 | NIF3 (NGG1p interacting factor 3)-like di-iron binding protein ! | NIF3 (NGG1p interacting factor 3)-like consist of two intertwined domains; duplication: contains two structural repeats of alpha-beta-(beta-alpha)3 motif with mixed beta-sheet, order: 1432, strand 1 is antiparallel to the rest |
| d.115.1 | YrdC/RibB | YrdC/RibB core: alpha-beta(2)-alpha-beta-alpha(2)-beta(2)-alpha-beta-alpha-beta; 3 layers; mixed twisted sheet of 7 strands; order 7126354; strands 7 and 1 are parallel to each other |
| b.159.1 | Allene oxide cyclase-like | AOC barrel-like barrel, closed; n=8, S=10; meander; mirrored (reversed) topology to the Spreptavidin-like and Lipocalin-like folds |
| 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.245.1 | NSFL1 (p97 ATPase) cofactor p47, SEP domain | NSFL1 (p97 ATPase) cofactor p47, SEP domain beta(3)-alpha(2)-beta; 2 layers; mixed beta-sheet, order 4123, strands 1 and 4 are parallel to each other |
| 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 |
| 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 |
| g.41.10 | Zn-finger domain of Sec23/24 | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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 |
| 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 |
| b.1.19 | Antigen MPT63/MPB63 (immunoprotective extracellular protein) | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| d.202.1 | Transcription factor NusA, N-terminal domain | Transcription factor NusA, N-terminal domain alpha-beta(3)-alpha-beta-alpha; bifurcated coiled beta-sheet |
| b.2.6 | Cytochrome f, large domain | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| b.85.5 | Tlp20, baculovirus telokin-like protein similar to dUTPase in fold and trimeric assembly ! | beta-clip double-stranded ribbon sharply bent in two places; the ribbon ends form incomplete barrel; jelly-roll |
| b.1.11 | PapD-like contains PP switch between strands D and C' ! | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.121.5 | ssDNA viruses | Nucleoplasmin-like/VP (viral coat and capsid proteins) sandwich; 8 strands in 2 sheets; jelly-roll; some members can have additional 1-2 strands ! characteristic interaction between the domains of this fold allows the formation of five-fold and pseudo six-fold assemblies |
| d.302.1 | Coronavirus NSP8-like | Coronavirus NSP8-like core: alpha-beta(2)-alpha-beta(4)-alpha-beta; bifurcated barrel-like beta-sheet |
| 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 |
| e.65.1 | VPA0735-like | VPA0735-like consists of a cluster of helices and two beta-sandwich domains of similar topology; probable duplication |
| 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] |
| b.139.1 | Surface presentation of antigens (SPOA) | Surface presentation of antigens (SPOA) segment-swapped dimer forming two identical conjoint barrels (n=6, S=10) topologically similar to the FMN-binding split barrel |
| e.68.1 | YacF-like probable biological unit is a dimer | YacF-like 2 domains; d1: kinked four-helical bundle, inserted in d2: beta-sandwich of 7 strands in two sheets |
| 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.162.1 | LDH C-terminal domain-like | LDH C-terminal domain-like unusual fold, defines family |
| b.48.1 | mu transposase, C-terminal domain | mu transposase, C-terminal domain barrel; n=6, S=8, greek-key |
| 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) |
| b.149.1 | Beta-galactosidase LacA, domain 3 | Beta-galactosidase LacA, domain 3 sandwich; 8 strands in 2 sheets |
| b.102.1 | Methuselah ectodomain duplication: contains two similar sub domains connected by a structured linker ! | Methuselah ectodomain complex fold |
| b.2.1 | Diphtheria toxin, C-terminal domain | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| d.239.1 | GCM domain DNA-binding domain ! | GCM domain consists of two different alpha+beta subdomains; 2 zinc-binding sites |
| b.40.5 | Inorganic pyrophosphatase | OB-fold barrel, closed or partly opened n=5, S=10 or S=8; greek-key |
| b.97.1 | Cytolysin/lectin some topological similarity to osmotin ! | Cytolysin/lectin sandwich, 10 strands in 2 sheets; |
| 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.1.5 | Inosine monophosphate dehydrogenase (IMPDH) The phosphate moiety of substrate binds in the 'common' phosphate-binding site ! | 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 |
| 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) |
| 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 |
| b.161.1 | PTSIIA/GutA-like | PTSIIA/GutA-like barrel, closed; n=8, S=12; mixed sheet; two overside connections; duplication: consists of two intertwinned structural repeats |
| 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.1.26 | ICP-like topological variant with similarity to the Cupredoxin-like fold ( | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| 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.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 |
| f.12.1 | Head and neck region of the ectodomain of NDV fusion glycoprotein | Head and neck region of the ectodomain of NDV fusion glycoprotein 3 intertwined all-beta domains |
| b.42.6 | MIR domain | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| b.110.1 | Cloacin translocation domain | Cloacin translocation domain complex fold made of several coiled beta-sheets |
| f.8.1 | Aerolisin/ETX pore-forming domain | Aerolisin/ETX pore-forming domain 3 domains: (1) alpha+beta; (2&3) all-beta |
| b.3.2 | Carboxypeptidase regulatory domain-like | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| 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.34.18 | CarD-like | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| g.41.17 | CSL zinc finger | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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] |
| b.9.1 | Neurophysin II duplication: composed of two structural repeats ! | Neurophysin II sandwich; 8 strands in 2 sheets; meander |
| d.79.4 | PurM N-terminal domain-like | Bacillus chorismate mutase-like core: beta-alpha-beta-alpha-beta(2); mixed beta-sheet: order: 1423, strand 4 is antiparallel to the rest |
| d.175.1 | Penicillin binding protein dimerisation domain | Penicillin binding protein dimerisation domain unusual fold |
| g.41.18 | YfgJ-like duplication: consists of two rubredoxin-like (sub)domains, interlocked together | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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) |
| 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.82.7 | Calcium ATPase, transduction domain A a distorted variant of double-helix ! | 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 |
| b.162.1 | At5g01610-like | At5g01610-like contains large meander beta-sheet bent into a scoop-like shape |
| 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 |
| b.1.6 | Cadherin-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| b.143.1 | NAC domain | NAC domain core: twisted 7-stranded beta-sheet (half-barrel) |
| d.373.1 | gpW/gp25-like Contains phage tail lysozyme | gpW/gp25-like alpha(2)-beta(3); similar to one structural repeat of the Creatinase/aminopeptidase family and the C-terminal subdomain of PanC |
| b.2.10 | DR1885-like metal-binding protein | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| 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 |
| b.178.1 | PA1994-like | Spiral beta-roll a large 15-stranded beta-sheet rolled about a single helix core; overlapping edges form a sandwich-like structure; topological similarity to the LolA-like fold (scop_cf 89391) |
| b.1.3 | PKD domain | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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 |
| b.32.1 | gp9 | gp9 consists of two different beta-sandwich domains unrelated to other beta-sandwich folds |
| d.353.1 | AMPKBI-like | AMPKBI-like comprises 3 short helices and 3-stranded meander beta-sheet; makes extensive intermolecular interactions |
| d.275.1 | Hut operon positive regulatory protein HutP | Hut operon positive regulatory protein HutP alpha(2)-beta-alpha(2)-beta(3); 3 layers: a/b/a; antiparallel beta-sheet: order 1234 |
| d.48.1 | RecA protein, C-terminal domain | Anti-LPS factor/recA domain alpha-beta(3)-alpha(2); 2 layers, alpha/beta |
| b.158.1 | BH3618-like | BH3618-like barrel, closed; n=7, S=10; meander |
| 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 |
| b.96.1 | Nicotinic receptor ligand binding domain-like | Nicotinic receptor ligand binding domain-like sandwich; 8 strands in 2 sheets; greek-key: partial topological similarity to immunoglobulin-like folds |
| d.81.2 | Serine metabolism enzymes domain contains extra C-terminal beta-hairpin ! | FwdE/GAPDH domain-like core: alpha-beta-alpha-beta(3); mixed sheet: 2134, strand 2 is parallel to strand 1 |
| d.368.1 | YonK-like (Pro)phage and phage-related proteins | YonK-like intertwined dimer of beta(3)-alpha-beta subunits; assembles further in octamer with formation of a wide 16-stranded beta-barrel |
| d.52.2 | GMP synthetase C-terminal dimerisation domain | Alpha-lytic protease prodomain-like core: alpha-beta(2)-(alpha)-beta; 2 layers: alpha/beta |
| 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 |
| g.49.1 | Cysteine-rich domain | Cysteine-rich domain dimetal(zinc)-bound alpha+beta fold |
| d.209.1 | LCCL domain | LCCL domain unusual fold |
| d.102.1 | Regulatory factor Nef | Regulatory factor Nef alpha(2)-beta(4)-alpha; 3 layers: alpha/beta/alpha |
| d.22.1 | GFP-like | GFP-like beta-sheet folds into a barrel (n=11, S=14) around the central helix |
| d.332.1 | RGC domain-like | RGC domain-like consists of two beta-sheets and four helices eclosing a cental cavity |
| d.147.1 | Methenyltetrahydromethanopterin cyclohydrolase | Methenyltetrahydromethanopterin cyclohydrolase consists of two alpha+beta subdomains |
| b.146.1 | Ctag/Cox11 | Ctag/Cox11 sandwich; 7 strands in 2 sheets, greek-key; permutation of the immunoglobulin-like fold |
| c.52.2 | tRNA-intron endonuclease catalytic domain-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 |
| g.26.1 | Antifungal protein (AGAFP) | Antifungal protein (AGAFP) disulfide-rich; all-beta: open barrel, 5 strands; OB-fold-like |
| b.85.7 | SET domain duplication: the core is composed of two structural repeats similar to (circularly permuted) repeats of AFPIII ! also contains a substrate-binding alpha+beta subdomain inserted in the core ! | beta-clip double-stranded ribbon sharply bent in two places; the ribbon ends form incomplete barrel; jelly-roll |
| d.133.1 | Molybdenum cofactor-binding domain duplication: consists of 4 structural repeats arranged in 2 lobes ! contains one left-hand beta-alpha-beta unit per lobe ! | Molybdenum cofactor-binding domain beta(2)-alpha-beta-alpha-beta; 2 layers: a/b; mixed sheet: order 1243: crossing loops |
| 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 |
| c.64.1 | Pyruvate-ferredoxin oxidoreductase, PFOR, domain III | Pyruvate-ferredoxin oxidoreductase, PFOR, domain III 3 layers: a/b/a; mixed beta-sheet of 6 strands, order 231456; strand 3 is antiparallel to the rest |
| b.155.1 | L21p-like | L21p-like core: sandwich, 6 strands in 2 sheets |
| 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 |
| b.34.16 | Kinase-associated protein B-like contains extra C-terminal alpha-hairpin ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| c.141.1 | Glycerate kinase I | Glycerate kinase I consists of two different alpha/beta domains; (1) of the Flavodoxin-like fold (scop_cf 52171); (2) similar to the Restriction endonuclease-like fold (scop_cf 52979), inserted into domain 1 |
| c.146.1 | YgbK-like | YgbK-like consists of two domains with partial topological similarity to the P-loop kinases but without the P-loop motif; the domain association results in the formation of a single mixed beta-sheet of 15 strands |
| e.45.1 | Antivirulence factor | Antivirulence factor contains a helical bundle with a buried helix and an alpha+beta insert domain |
| f.4.6 | Tsx-like channel forms (12,16) barrel ! | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| d.382.1 | PSTPO5379-like | PSTPO5379-like complex fold; consists of two alpha+beta subdomains, one is inserted in the other |
| d.75.1 | tRNA-intron endonuclease N-terminal domain-like | MutS N-terminal domain-like beta(2)-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta |
| 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 |
| b.77.2 | delta-Endotoxin (insectocide), middle domain | beta-Prism I consists of 3 4-stranded sheets; strands are parallel to the 3-fold axis ! duplication: has internal pseudo threefold symmetry |
| 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.65.1 | Hedgehog/DD-peptidase zinc-binding motif ! | Hedgehog/DD-peptidase alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta |
| b.38.3 | GatD N-terminal domain-like | Sm-like fold core: barrel, open; n*=4, S*=8; meander; SH3-like topology |
| a.110.1 | Aldehyde ferredoxin oxidoreductase, C-terminal domains | Aldehyde ferredoxin oxidoreductase, C-terminal domains multihelical; consists of two all-alpha domains |
| 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 |
| 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.171.1 | Trm112p-like possibly have evolved from a metal ion (or cofactor)-binding protein of a rubredoxin-like fold; in the known members, from one to three of the four metal-binding positions are occupied by cysteine residues | Trm112p-like similar to the small domain of the ISP (scop_cf 50021) |
| 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.129.8 | Rbstp2229 protein forms segment-swapped dimers further organized in hexamers ! | TBP-like beta-alpha-beta(4)-alpha |
| 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 |
| d.170.2 | A heparin-binding domain | SRCR-like unusual fold; disulfide-rich; core: beta-x-alpha-beta-loop-beta |
| d.264.1 | Prim-pol domain | Prim-pol domain consists of two alpha+beta domains |
| b.53.1 | Ribosomal protein L25-like | Ribosomal protein L25-like barrel, closed; n=6, S=10; complex topology |
| a.102.2 | Seven-hairpin glycosidases | alpha/alpha toroid multihelical; up to seven alpha-hairpins are arranged in closed circular array; there may be sequence similarities between different superfamilies |
| g.47.1 | Zinc domain conserved in yeast copper-regulated transcription factors | Zinc domain conserved in yeast copper-regulated transcription factors metal(zinc)-bound alpha+beta fold |
| 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 |
| b.1.25 | LEA14-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| d.339.1 | ORC1-binding domain | ORC1-binding domain complex fold, composed of an alpha hairpin, meander beta-sheet and a five-stranded barrel of unusual topology |
| b.107.1 | Urease metallochaperone UreE, N-terminal domain | Urease metallochaperone UreE, N-terminal domain barrel, closed; n=6, S=8; a crossover loop topology |
| b.1.24 | Accessory protein X4 (ORF8, ORF7a) | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| d.135.1 | The spindle assembly checkpoint protein mad2 N- and C-termini undergo large conformational rearrangement upon ligand binding ! | The spindle assembly checkpoint protein mad2 core: alpha(2)-beta(2)-alpha-beta; mixed sheet: order 213 |
| d.81.4 | V-type ATPase subunit E-like extra N-terminal helix and extra C-terminal helix form dimerisation subdomain | FwdE/GAPDH domain-like core: alpha-beta-alpha-beta(3); mixed sheet: 2134, strand 2 is parallel to strand 1 |
| b.73.1 | Head domain of nucleotide exchange factor GrpE | Head domain of nucleotide exchange factor GrpE small mixed beta-sheet, 4 "generalized" strands |
| 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 |
| g.41.4 | Casein kinase II beta subunit | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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 |
| g.89.1 | CHY zinc finger-like | CHY zinc finger-like trimetal-bound fold; integration of HIT/MYND-like and rubredoxin-like fingers |
| f.4.2 | Outer membrane phospholipase A (OMPLA) forms (12,16) barrel ! | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| e.67.1 | PH0156-like | PH0156-like 2 (sub)domains; d1: [alpha/beta with central mixed beta-sheet, order: 23415876, similarity to the G protein but no P-loop]; d2: [all-alpha, 5 helices, provides dimerization interface] |
| d.68.5 | C-terminal domain of ProRS contains a metal (zinc)-binding site ! | IF3-like beta-alpha-beta-alpha-beta(2); 2 layers; mixed sheet 1243, strand 4 is antiparallel to the rest |
| b.42.8 | AbfB domain | beta-Trefoil barrel, closed; n=6, S=12; and a hairpin triplet; meander ! duplication: has internal pseudo threefold symmetry |
| g.90.1 | E6 C-terminal domain-like | E6 C-terminal domain-like alpha+beta zinc-binding fold with topological similarity to the fold of lambda cro protein |
| d.15.9 | Glutamine synthetase, N-terminal domain | beta-Grasp (ubiquitin-like) core: beta(2)-alpha-beta(2); mixed beta-sheet 2143 |
| d.235.1 | FYSH domain | FYSH domain beta(2)-alpha(2)-beta(2)-alpha-beta; two layers: alpha/beta; antiparallel sheet: order 51234 |
| b.20.1 | ENV polyprotein, receptor-binding domain | ENV polyprotein, receptor-binding domain sandwich; 9 strands in 2 sheets; greek-key; contains a few helices in loop regions |
| b.138.1 | Hydrophobin II, HfbII | Hydrophobin II, HfbII core: barrel, closed; n=4, S=8; complex topology; helix-containing crossover connection |
| g.72.1 | SBT domain | SBT domain consist of two different zn-binding subdomains, each subdomain resembles a distorted glucocorticoid receptor-like fold |
| 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 |
| 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 |
| b.2.9 | Peptidylarginine deiminase Pad4, middle domain | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| b.34.15 | Hypothetical protein YfhH contains extra N-terminal all-alpha subdomain ! | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| 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 |
| d.364.1 | PA1123-like | PA1123-like irregular array of short helices and two three-stranded beta-sheets |
| 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 |
| d.326.1 | XisI-like | XisI-like alpha-beta(4)-alpha-beta-alpha; 2 layers, a/b; antiparallel beta-sheet, order 1234, meander; the open side of beta-sheet provides dimerization interface |
| d.76.1 | GYF domain | GYF/BRK domain-like beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta |
| b.72.3 | Pym (Within the bgcn gene intron protein, WIBG), N-terminal domain | WW domain-like core: 3-stranded meander beta-sheet |
| c.56.8 | Cgl1923-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.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)] |
| g.3.19 | Bubble protein | Knottins (small inhibitors, toxins, lectins) disulfide-bound fold; contains beta-hairpin with two adjacent disulfides |
| b.123.1 | Hypothetical protein TM1070 | Hypothetical protein TM1070 sandwich; 8 strands in 2 sheets; jelly-roll |
| 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.170.1 | WSSV envelope protein-like | WSSV envelope protein-like beta-sandwich; 9 strands in 2 sheets; greek-key |
| d.146.1 | Uridine diphospho-N-Acetylenolpyruvylglucosamine reductase, MurB, C-terminal domain | Uridine diphospho-N-Acetylenolpyruvylglucosamine reductase, MurB, C-terminal domain consists of two alpha+beta subdomains |
| b.85.2 | Head decoration protein D (gpD, major capsid protein D) | beta-clip double-stranded ribbon sharply bent in two places; the ribbon ends form incomplete barrel; jelly-roll |
| b.121.6 | Group I dsDNA viruses | Nucleoplasmin-like/VP (viral coat and capsid proteins) sandwich; 8 strands in 2 sheets; jelly-roll; some members can have additional 1-2 strands ! characteristic interaction between the domains of this fold allows the formation of five-fold and pseudo six-fold assemblies |
| d.129.11 | YugN-like | TBP-like beta-alpha-beta(4)-alpha |
| g.21.1 | Methylamine dehydrogenase, L chain | Methylamine dehydrogenase, L chain disulfide-rich; nearly all-beta |
| 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 |
| 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 |
| f.6.1 | Leukocidin-like | Leukocidin-like subunit fold contains beta-sandwich of Ig-like (grerk-key) topology and a beta-ribbon arm that forms an oligomeric transmembrane barrel |
| d.79.9 | BB2672-like contains extra N-terminal strand and a beta-hairpin insertion between strands 3 and 4 that packs against the main beta-sheet | Bacillus chorismate mutase-like core: beta-alpha-beta-alpha-beta(2); mixed beta-sheet: order: 1423, strand 4 is antiparallel to the rest |
| e.15.1 | Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment | Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment 2 domains: alpha+beta and all-beta |
| 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 |
| b.1.27 | CalX-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| d.363.1 | NMB0513-like | NMB0513-like alpha(3)-beta(2)-alpha-beta(2); some similarity to the "winged helix" DNA-binding domain fold |
| 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 |
| b.34.20 | YorP-like | SH3-like barrel barrel, partly opened; n*=4, S*=8; meander ! the last strand is interrupted by a turn of 3-10 helix |
| b.3.7 | Hypothetical protein PA1324 | Prealbumin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands to common fold |
| b.1.23 | ApaG-like | Immunoglobulin-like beta-sandwich sandwich; 7 strands in 2 sheets; greek-key ! some members of the fold have additional strands |
| 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.168.1 | Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain | Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain unusual fold |
| 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.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 |
| g.41.1 | Methionyl-tRNA synthetase (MetRS), Zn-domain | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| 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 |
| g.41.14 | NADH pyrophosphatase intervening domain | Rubredoxin-like metal(zinc or iron)-bound fold; sequence contains two CX(n)C motifs, in most cases n = 2 |
| d.83.2 | Activator of Hsp90 ATPase, Aha1 consists of a single domain of this fold ! | Aha1/BPI domain-like core: [beta]-alpha-beta(5)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, meander |
| 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 |
| b.6.2 | Major surface antigen p30, SAG1 SS-crosslinked beta-sandwich of distinct geometry but topologically similar to cupredoxins ! | Cupredoxin-like sandwich; 7 strands in 2 sheets, greek-key ! variations: some members have additional 1-2 strands |
| e.2.1 | Replication terminator protein (Tus) | Replication terminator protein (Tus) contains a cluster of helices and a beta-sandwich |
| b.2.7 | Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor duplication: one domain of this fold is inserted into another domain of the same fold ! | Common fold of diphtheria toxin/transcription factors/cytochrome f sandwich; 9 strands in 2 sheet; greek-key; subclass of immunoglobin-like fold |
| a.117.1 | Ras GEF | Ras GEF multihelical |
| d.281.1 | Hemolytic lectin CEL-III, C-terminal domain | Hemolytic lectin CEL-III, C-terminal domain unusual fold |
| d.129.5 | MoaD-related protein, C-terminal domain contains a single copy of this fold ! | TBP-like beta-alpha-beta(4)-alpha |
| f.4.5 | Autotransporter forms (12,14) barrel; contains a long alpha-helix running along the barrel axis ! | Transmembrane beta-barrels not a true fold, gathers together transmembrane barrels of different (n,S) |
| d.103.1 | CytB endotoxin-like | CytB endotoxin-like core: beta-alpha(2)-beta-alpha(2)-beta(4); 3 layers: a/b/a |
| c.8.10 | LD-carboxypeptidase A C-terminal domain-like | 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.33.1 | SecB-like | SecB-like beta(4)-alpha(2); two layers: alpha/beta; antiparallel sheet: order 1432 |
| c.8.8 | Putative cyclase 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 |
| 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 |
| f.5.1 | Outer membrane efflux proteins (OEP) | Outer membrane efflux proteins (OEP) subunit fold contains tandem repeat of alpha-beta hairpin-alpha(2) motif ! trimeric fold contains barrel (n=12, S=18) formed by beta-hairpins, two from each subunit, and a bundle of helices with a channel running through it |