Lineage for Class d: Alpha and beta proteins (a+b)

  1. Root: SCOP 1.69
  2. 496776Class d: Alpha and beta proteins (a+b) [53931] (279 folds)

Folds:

  1. 496777d.1: Microbial ribonucleases [53932] (1 superfamily)
    single helix packs against antiparallel beta-sheet
  2. 497065d.2: Lysozyme-like [53954] (1 superfamily)
    common alpha+beta motif for the active site region
  3. 498098d.3: Cysteine proteinases [54000] (1 superfamily)
    consists of one alpha-helix and 4 strands of antiparallel beta-sheet and contains the catalytic triad Cys-His-Asn
  4. 498428d.4: His-Me finger endonucleases [54059] (1 superfamily)
    core: (alpha)-beta-omega_loop-beta-alpha; embeded in larger different structures
  5. 498512d.5: RNase A-like [54075] (1 superfamily)
    contains long curved beta-sheet and 3 helices
  6. 498764d.6: Prion-like [54097] (1 superfamily)
    beta-alpha-beta-alpha(2); antiparallel beta-ribbon
  7. 498806d.7: LysM domain [54105] (1 superfamily)
    beta-alpha(2)-beta; antiparallel strands
  8. 498812d.8: Urease, gamma-subunit [54110] (1 superfamily)
    alpha(3)-beta(2); antiparallel hairpin
  9. 498854d.9: IL8-like [54116] (1 superfamily)
    beta(3)-alpha
  10. 499058d.10: DNA-binding domain [54170] (1 superfamily)
    beta(3)-alpha; 2 layers: alpha/beta
  11. 499087d.11: Penicillin-binding protein 2x (pbp-2x), c-terminal domain [54183] (1 superfamily)
    alpha1-beta3; 2 layers: alpha/beta; order 132
  12. 499112d.12: Ribosomal proteins L23 and L15e [54188] (1 superfamily)
    beta-(alpha)-beta-alpha-beta(2); 3 layers: alpha/beta/alpha; antiparallel beta-sheet: order 1243
  13. 499160d.13: HIT-like [54196] (2 superfamilies)
    alpha-beta(3)-alpha-beta(2); 3 layers: alpha/beta/alpha
  14. 499246d.14: Ribosomal protein S5 domain 2-like [54210] (1 superfamily)
    core: beta(3)-alpha-beta-alpha; 2 layers: alpha/beta; left-handed crossover
  15. 499486d.15: beta-Grasp (ubiquitin-like) [54235] (12 superfamilies)
    core: beta(2)-alpha-beta(2); mixed beta-sheet 2143
  16. 500350d.16: FAD-linked reductases, C-terminal domain [54372] (1 superfamily)
    alpha+beta sandwich
  17. 500605d.17: Cystatin-like [54402] (7 superfamilies)
    Core: alpha-beta(4); helix packs against coiled antiparallel beta-sheet
  18. 501092d.18: ssDNA-binding transcriptional regulator domain [54446] (1 superfamily)
    helix-swapped dimer of beta(4)-alpha motifs
  19. 501112d.19: MHC antigen-recognition domain [54451] (1 superfamily)
    dimeric
  20. 501596d.20: UBC-like [54494] (1 superfamily)
    alpha-beta(4)-alpha(3); core: meander beta-sheet plus one helix 2
  21. 501666d.21: Diaminopimelate epimerase-like [54505] (1 superfamily)
    mixed beta-sheet folds into a barrel (n=8, S=14) around the central helix
  22. 501707d.22: GFP-like [54510] (1 superfamily)
    beta-sheet folds into a barrel (n=11, S=14) around the central helix
  23. 501806d.23: Transcriptional factor tubby, C-terminal domain [54517] (1 superfamily)
    beta-sheet folds into a barrel (n=12, S=12) around the central helix
  24. 501813d.24: Pili subunits [54522] (1 superfamily)
    contains very long N-terminal helix, which end is packed against beta-sheet
  25. 501841d.25: Acidic mitochondrial matrix protein p32 [54528] (1 superfamily)
    core: beta(7)-alpha(2); N- and C-terminal extensions form a coiled coil subdomain
  26. 501849d.26: FKBP-like [54533] (3 superfamilies)
    core: beta(2)-alpha-beta(2); antiparallel beta-sheet
  27. 502133d.27: Ribosomal protein S16 [54564] (1 superfamily)
    beta(4)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet, order: 51234
  28. 502153d.28: Ribosomal protein S19 [54569] (1 superfamily)
    alpha-beta-X-beta(2); 2 layers: alpha/beta; mixed beta-sheet, order: 123
  29. 502174d.29: Ribosomal protein L31e [54574] (1 superfamily)
    beta-alpha-beta-(alpha)-beta(2); 2 layers: alpha/beta; mixed beta-sheet, order: 1342
  30. 502198d.30: Allophycocyanin linker chain (domain) [54579] (1 superfamily)
    beta(2)-alpha-beta; 2 layers: alpha/beta
  31. 502205d.31: Cdc48 domain 2-like [54584] (1 superfamily)
    beta-alpha-beta(3); 2 layers: alpha/beta
  32. 502238d.32: Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase [54592] (1 superfamily)
    beta-alpha-beta(3); 2 layers: alpha/beta
  33. 502475d.33: Bacterial protein-export protein SecB [54610] (1 superfamily)
    beta(4)-alpha(2); two layers: alpha/beta; antiparallel sheet: order 1432
  34. 502497d.34: DNA-binding domain of Mlu1-box binding protein MBP1 [54615] (1 superfamily)
    beta(4)-alpha(2)-beta(2)-alpha; antiparallel sheet: order 123465
  35. 502505d.35: Heme-binding protein A (HasA) [54620] (1 superfamily)
    beta-alpha-beta(6)-alpha(2); antiparallel sheet: order 165432
  36. 502514d.36: Chalcone isomerase [54625] (1 superfamily)
    beta(3)-alpha(2)-beta-alpha(2)-beta3; 2 layers alpha/beta; antiparallel sheet: order 1234567
  37. 502537d.37: CBS-domain [54630] (1 superfamily)
    core: beta-alpha-beta(4); 2 layers: alpha/beta
  38. 502577d.38: Thioesterase/thiol ester dehydrase-isomerase [54636] (1 superfamily)
    core: beta-alpha-beta(4); 2 layers: alpha/beta
  39. 502721d.39: DLC [54647] (1 superfamily)
    core: beta-alpha(2)-beta-X-beta(2); 2 layers: alpha/beta; antiparallel beta-sheet: order 1342
  40. 502743d.40: CI-2 family of serine protease inhibitors [54653] (1 superfamily)
    alpha+beta sandwich; loop across free side of beta-sheet
  41. 502780d.41: alpha/beta-Hammerhead [54664] (5 superfamilies)
    core: beta-BETA-alpha-beta-BETA-beta-alpha; contains a beta-hammerhead motif similar to that in barrel-sandwich hybrids
  42. 502928d.42: POZ domain [54694] (1 superfamily)
    core: beta(2)-alpha(2)-beta(2)-alpha(2); 2 layers a/b; mixed sheet: 2143
  43. 503015d.43: Elongation factor Ts (EF-Ts), dimerisation domain [54712] (1 superfamily)
    beta(2)-alpha(n)-beta; 2 layers a/b; antiparallel sheet: 123
  44. 503030d.44: Fe,Mn superoxide dismutase (SOD), C-terminal domain [54718] (1 superfamily)
    alpha-beta(2)-alpha-beta-alpha(2); 3 strands of antiparallel sheet: 213
  45. 503224d.45: ClpS-like [54735] (1 superfamily)
    beta-alpha(2)-beta-alpha-beta; 2 layers, alpha/beta
  46. 503250d.47: Ribosomal protein L11, N-terminal domain [54746] (1 superfamily)
    beta-alpha(2)-beta(2); 2 layers, alpha/beta; antiparallel beta-sheet: order 123
  47. 503256d.48: Anti-LPS factor/recA domain [54751] (2 superfamilies)
    alpha-beta(3)-alpha(2); 2 layers, alpha/beta
  48. 503284d.49: Signal recognition particle alu RNA binding heterodimer, SRP9/14 [54761] (1 superfamily)
    (beta)-alpha-beta(3)-alpha; 2 layers, alpha/beta
  49. 503301d.50: dsRBD-like [54767] (4 superfamilies)
    alpha-beta(3)-alpha; 2 layers: alpha/beta
  50. 503404d.51: Eukaryotic type KH-domain (KH-domain type I) [54790] (1 superfamily)
    beta-alpha(2)-beta(2)-alpha; 2 layers: alpha/beta
  51. 503440d.52: Alpha-lytic protease prodomain-like [54805] (7 superfamilies)
    core: alpha-beta(2)-(alpha)-beta; 2 layers: alpha/beta
  52. 503531d.53: Ribosomal protein S3 C-terminal domain [54820] (1 superfamily)
    alpha(2)-beta(4); 2 layers: alpha/beta; antiparallel beta-sheet: order 2143
  53. 503550d.54: Enolase N-terminal domain-like [54825] (1 superfamily)
    beta(3)-alpha(3); meander and up-and-down bundle
  54. 503706d.55: Ribosomal protein L22 [54842] (1 superfamily)
    beta-alpha(3)-beta(2); 2 layers: alpha/beta; related to the enolase/MLE N-domain fold by a circular permutation
  55. 503734d.56: GroEL-intermediate domain like [54848] (1 superfamily)
    3-helical bundle packed against 3-stranded mixed beta-sheet
  56. 503911d.57: DNA damage-inducible protein DinI [54856] (1 superfamily)
    beta-alpha-beta(2)-alpha; 2 layers: alpha/beta; mixed sheet 213; crossing loops
  57. 503917d.58: Ferredoxin-like [54861] (49 superfamilies)
    alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2
  58. 505726d.59: Ribosomal protein L30p/L7e [55128] (1 superfamily)
    core: beta-alpha-beta-alpha-beta; antiparallel beta-sheet: order 312; some similarity to the ferredoxin-like fold
  59. 505754d.60: Probable bacterial effector-binding domain [55135] (1 superfamily)
    duplication of beta-alpha-beta(2) motif: antiparallel beta sheet forms barrel (n=6, S=12)
  60. 505775d.61: LigT-like [55143] (1 superfamily)
    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
  61. 505794d.62: Pepsin inhibitor-3 [55148] (1 superfamily)
    duplication of beta(3)-alpha(2) motif: meander beta sheets form barrel-like structure
  62. 505801d.63: mRNA triphosphatase CET1 [55153] (1 superfamily)
    duplication of beta-alpha-beta(3) motif: antiparallel beta sheet forms wide barrel (n=8, S=16) with a channel running through it
  63. 505812d.64: eIF1-like [55158] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha-beta; 2 layers: alpha/beta; mixed beta-sheet: order 51243
  64. 505821d.65: Hedgehog/DD-peptidase [55165] (1 superfamily)
    alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta
  65. 505851d.66: Alpha-L RNA-binding motif [55173] (1 superfamily)
    alpha(2)-beta(2)-loop-beta; 2 layers: alpha/beta
  66. 505899d.67: RRF/tRNA synthetase additional domain-like [55185] (4 superfamilies)
    core: alpha-beta(2)-alpha-beta(2); 2 layers: alpha/beta
  67. 505944d.68: IF3-like [55199] (7 superfamilies)
    beta-alpha-beta-alpha-beta(2); 2 layers; mixed sheet 1243, strand 4 is antiparallel to the rest
  68. 506095d.70: Yeast killer toxins [55220] (1 superfamily)
    beta-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta; left-handed crossover connection
  69. 506109d.71: Cell division protein MinE topological specificity domain [55228] (1 superfamily)
    dimer of alpha-beta(2) motifs ; 2 layers, alpha/beta
  70. 506116d.72: Cyanase C-terminal domain [55233] (1 superfamily)
    intertwined dimer of alpha-beta(2) motifs ; 2 layers, alpha/beta
  71. 506141d.73: RuBisCO, small subunit [55238] (1 superfamily)
    alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta
  72. 506235d.74: DCoH-like [55247] (4 superfamilies)
    beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta
  73. 506361d.75: MutS N-terminal domain-like [55266] (2 superfamilies)
    beta(2)-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta
  74. 506409d.76: GYF domain [55276] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta
  75. 506416d.77: Ribosomal protein L5 [55281] (1 superfamily)
    beta-alpha-beta(2)-alpha-beta(3)-alpha; 2 layers, alpha/beta; antiparallel beta-sheet: order 231654
  76. 506446d.78: RPB5-like RNA polymerase subunit [55286] (1 superfamily)
    core: beta-alpha-beta-alpha-beta(2); 2 layers, alpha/beta
  77. 506461d.79: Bacillus chorismate mutase-like [55297] (7 superfamilies)
    core: beta-alpha-beta-alpha-beta(2); mixed beta-sheet: order: 1423, strand 4 is antiparallel to the rest
  78. 506749d.80: Tautomerase/MIF [55330] (1 superfamily)
    (beta-alpha-beta)2; 2 layers: alpha/beta; mixed beta-sheet
    generally forms trimers with three closely packed beta-sheets
  79. 506899d.81: Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain [55346] (1 superfamily)
    core: alpha-beta-alpha-beta(3); mixed sheet: 2134, strand 2 is parallel to strand 1
  80. 507309d.82: N domain of copper amine oxidase-like [55382] (3 superfamilies)
    alpha-beta(5)-alpha; 2 layers: alpha/beta; meander antiparallel sheet
  81. 507350d.83: Aha1/BPI domain-like [55393] (2 superfamilies)
    core: [beta]-alpha-beta(5)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, meander
  82. 507368d.84: Subtilisin inhibitor [55398] (1 superfamily)
    alpha+beta sandwich
  83. 507379d.85: RNA bacteriophage capsid protein [55404] (1 superfamily)
    6-standed beta-sheet followed with 2 helices; meander
  84. 507515d.86: Translation initiation factor eIF4e [55417] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha-beta(2)-alpha-beta-2; 2 layers: alpha/beta; antiparallel sheet: 21356478
  85. 507534d.87: CO dehydrogenase flavoprotein C-domain-like [55423] (2 superfamilies)
    core: beta(3,4)-alpha(3); alpha+beta sandwich
  86. 507703d.88: SRF-like [55454] (1 superfamily)
    alpha-beta(2)-alpha; dimer; 3 layers a/b/a; antiparallel beta-sheet
  87. 507732d.89: Origin of replication-binding domain, RBD-like [55463] (1 superfamily)
    alpha-beta-alpha-beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel sheet 41325
  88. 507786d.90: FMN-dependent nitroreductase-like [55468] (1 superfamily)
    core: (alpha-beta-alpha-beta)2; 3 layers a/b/a; antiparallel beta-sheet: 1243
  89. 507849d.91: N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 [55480] (1 superfamily)
    alpha-beta-alpha(2)-beta(3)-alpha; 3 layers a/b/a; antiparallel beta-sheet: 4123
  90. 507855d.92: Zincin-like [55485] (2 superfamilies)
    contains mixed beta sheet with connection over free side of the sheet
  91. 508336d.93: SH2-like [55549] (1 superfamily)
    3 layers: a/b/a; antiparallel beta-sheet of 5 strands is flaked by two helices
  92. 508624d.94: HPr-like [55593] (2 superfamilies)
    beta-alpha-beta(2)-alpha-beta-alpha; 2 layers: a/b; antiparallel sheet 1423
  93. 508678d.95: Homing endonuclease-like [55603] (2 superfamilies)
    alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243
  94. 508755d.96: T-fold [55619] (1 superfamily)
    beta(2)-alpha(2)-beta(2); 2 layers: alpha/beta; antiparallel sheet 1234
    tunnel-shaped: its known members form wide oligomeric barrels different sizes
  95. 508994d.97: Cell cycle regulatory proteins [55636] (1 superfamily)
    beta(2)-alpha(2)-beta(2); 2 layers: alpha/beta; antiparallel sheet 1243
    can form strand-exchange dimers
  96. 509021d.98: beta-lactamase-inhibitor protein, BLIP [55647] (1 superfamily)
    alpha(2)-beta(4); 2 layers: alpha/beta
  97. 509030d.99: Ribosomal protein L9 C-domain [55652] (1 superfamily)
    alpha-beta-alpha(2)-beta(2); 2 layers: alpha/beta
  98. 509036d.100: L9 N-domain-like [55657] (1 superfamily)
    beta(2)-alpha-beta-alpha; 3 layers: alpha/beta/alpha
  99. 509047d.101: Ribonuclease PH domain 2-like [55665] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha; 3 layers: alpha/beta/alpha; antiparallel sheet: order 2134
  100. 509079d.102: Regulatory factor Nef [55670] (1 superfamily)
    alpha(2)-beta(4)-alpha; 3 layers: alpha/beta/alpha
  101. 509090d.103: CytB endotoxin-like (Pfam 01338) [55675] (1 superfamily)
    core: beta-alpha(2)-beta-alpha(2)-beta(4); 3 layers: a/b/a
  102. 509107d.104: Class II aaRS and biotin synthetases [55680] (1 superfamily)
    contains large mixed beta-sheet
  103. 509289d.105: Subdomain of clathrin and coatomer appendage domain [55710] (1 superfamily)
    beta-alpha-beta-alpha-beta(4)-alpha; 3 layers: a/b/a; bifurcated antiparallel beta-sheet
  104. 509312d.106: Sterol carrier protein, SCP [55717] (1 superfamily)
    alpha-beta(3)-(crossover)-beta-(alpha)-beta; 3 layers: a/b/a; antiparallel beta-sheet of 5 strands; order: 32145
  105. 509325d.107: Mog1p/PsbP-like [55723] (1 superfamily)
    (beta-hairpin)-beta(3)-alpha-beta(4)-alpha; 3 layers: a/b/a; antiparallel beta-sheet of 7 strands; order: 1237654
  106. 509342d.108: Acyl-CoA N-acyltransferases (Nat) [55728] (1 superfamily)
    3 layers: a/b/a; contains mixed beta-sheet
  107. 509537d.109: Gelsolin-like [55752] (2 superfamilies)
    3 layers: a/b/a; contains mixed beta-sheet
  108. 509664d.110: Profilin-like [55769] (7 superfamilies)
    core: 2 alpha-helices and 5-stranded antiparallel sheet: order 21543; 3 layers: alpha/beta/alpha
  109. 509908d.111: PR-1-like [55796] (1 superfamily)
    alpha-beta-alpha-beta-alpha(2)-beta(2); 3 layers, alpha/beta/alpha; mixed sheet: order 1342
  110. 509920d.112: Phoshotransferase/anion transport protein [55803] (1 superfamily)
    beta-alpha(2)-beta(3)-alpha(3); 3 layers, alpha/beta/alpha; mixed sheet: order 1342; loop crossing
  111. 509941d.113: Nudix [55810] (1 superfamily)
    beta(2)-alpha-beta(3)-alpha; 3 layers: alpha/beta/alpha; mixed sheet
    contains beta-grasp motif
  112. 510062d.114: 5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain [55815] (1 superfamily)
    core: alpha-beta(2)-alpha-beta(2)-alpha-beta; 3 layers; mixed sheet: order 31425
  113. 510082d.115: YrdC/RibB [55820] (1 superfamily)
    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
  114. 510123d.116: YbaK/ProRS associated domain [55825] (1 superfamily)
    core: alpha-beta-alpha-beta(2)-(alpha-beta)2-alpha-beta(2)-alpha-beta; 3 layers; bifurcated mixed sheet
  115. 510138d.117: Thymidylate synthase/dCMP hydroxymethylase [55830] (1 superfamily)
    contains large mixed beta-sheet
  116. 510337d.118: N-acetylmuramoyl-L-alanine amidase-like [55845] (1 superfamily)
    contains mixed beta-sheet
  117. 510360d.120: Cytochrome b5-like heme/steroid binding domain [55855] (1 superfamily)
    beta-alpha-beta(2)-alpha(1,2)-(beta)-alpha(2)-beta; 3 layers: a/b/a; antiparallel beta-sheet, order: 1532(4)
  118. 510433d.121: DNA topoisomerase I domain [55868] (1 superfamily)
    beta(2)-alpha-beta-(alpha)-beta(2); left-handed crossover between strands 2 & 3
  119. 510439d.122: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase [55873] (1 superfamily)
    8-stranded mixed beta-sheet; 2 layers: alpha/beta
  120. 510579d.123: Sporulation response regulatory protein Spo0B [55889] (1 superfamily)
    core: alpha-beta-alpha-beta(2)-(alpha)-beta(2)
  121. 510590d.124: Ribonuclease Rh-like [55894] (1 superfamily)
    alpha+beta fold
  122. 510627d.125: Ornithine decarboxylase C-terminal domain [55903] (1 superfamily)
    complex alpha+beta motif
  123. 510635d.126: Pentein, beta/alpha-propeller [55908] (1 superfamily)
    duplication: composed of 5 alpha-beta(2)-alpha-beta units arranged around pseudo fivefold axis
  124. 510692d.127: Creatinase/aminopeptidase [55919] (1 superfamily)
    duplication: composed of two very similar alpha+beta folds
  125. 510750d.128: Glutamine synthetase/guanido kinase [55930] (1 superfamily)
    duplication: common core consists of two beta-alpha-beta2-alpha repeats
  126. 510905d.129: TBP-like [55944] (8 superfamilies)
    beta-alpha-beta(4)-alpha
  127. 511189d.130: S-adenosylmethionine synthetase [55972] (1 superfamily)
    duplication: consists of 3 similar intertwined domains
    structural repeat: beta-alpha-beta(2)-alpha-beta; two layers, alpha/beta
  128. 511273d.131: DNA clamp [55978] (1 superfamily)
    contains two helices and two beta sheets
    duplication: fold has internal pseudo two-fold symmetry
  129. 511393d.133: Molybdenum cofactor-binding domain [56002] (1 superfamily)
    beta(2)-alpha-beta-alpha-beta; 2 layers: a/b; mixed sheet: order 1243: crossing loops
  130. 511442d.134: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 [56013] (1 superfamily)
    beta-alpha-beta-alpha-beta(3)-alpha(2,3); mixed sheet: order 12345; left-handed crossover connection between strands 1 and 2
  131. 511471d.135: The spindle assembly checkpoint protein mad2 [56018] (1 superfamily)
    core: alpha(2)-beta(2)-alpha-beta; mixed sheet: order 213
  132. 511483d.136: Phospholipase D/nuclease [56023] (1 superfamily)
    beta-alpha-beta-alpha-beta-alpha-beta(4)-alpha; mixed sheet: order 1765234
  133. 511567d.137: Monooxygenase (hydroxylase) regulatory protein [56028] (1 superfamily)
    corner-like structure formed by two sheets and filled in with 2-3 helices
  134. 511582d.138: B3/B4 domain of PheRS, PheT [56036] (1 superfamily)
    3 layers: beta/beta/alpha sandwich
  135. 511592d.139: PurM C-terminal domain-like [56041] (1 superfamily)
    3 layers: alpha/beta/alpha; partial topological similarity to the ferredoxin-like fold
  136. 511609d.140: Ribosomal protein S8 [56046] (1 superfamily)
    consists of 2 different alpha+beta subdomains arranged in a 4-layer structure: b/a/b/a
  137. 511639d.141: Ribosomal protein L6 [56052] (1 superfamily)
    consists of two beta-sheets and one alpha-helix packed around single core
  138. 511685d.142: ATP-grasp [56058] (2 superfamilies)
    Consists of two subdomains with different alpha+beta folds
    shares functional and structural similarities with the PIPK and protein kinase superfamilies
  139. 511931d.143: SAICAR synthase-like [56103] (1 superfamily)
    consists of two alpha+beta subdomains
  140. 511959d.144: Protein kinase-like (PK-like) [56111] (1 superfamily)
    consists of two alpha+beta domains, C-terminal domain is mostly alpha helical
  141. 512542d.145: FAD-binding domain [56175] (1 superfamily)
    consists of two alpha+beta subdomains
  142. 512649d.146: Uridine diphospho-N-Acetylenolpyruvylglucosamine reductase, MurB, C-terminal domain [56193] (1 superfamily)
    consists of two alpha+beta subdomains
  143. 512660d.147: Methenyltetrahydromethanopterin cyclohydrolase [56198] (1 superfamily)
    consists of two alpha+beta subdomains
  144. 512666d.148: Hect, E3 ligase catalytic domain [56203] (1 superfamily)
    consists of two alpha+beta domains; the N-terminal domain is array of helices and beta-hairpins; the C-terminal domain is an a/b sandwich with one left-handed beta-alpha(n)-beta unit; conformational flexibility of domain orientation
  145. 512680d.149: Nitrile hydratase alpha chain [56208] (1 superfamily)
    4 layers a/b/b/a; inside is a sandwich of two 2-stranded beta-sheets
  146. 512698d.150: 4'-phosphopantetheinyl transferase [56213] (1 superfamily)
    beta-alpha(3)-beta(2) motif
  147. 512728d.151: DNase I-like [56218] (1 superfamily)
    contains beta-sandwich; duplication of alpha+beta motif
  148. 512772d.152: Aldehyde ferredoxin oxidoreductase, N-terminal domain [56227] (1 superfamily)
    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
  149. 512789d.153: Ntn hydrolase-like [56234] (2 superfamilies)
    4 layers: alpha/beta/beta/alpha; has an unusual sheet-to-sheet packing
  150. 513279d.154: DmpA/ArgJ-like [56265] (1 superfamily)
    duplication of beta(3)-alpha-beta-alpha motif; 4 layers: alpha/beta/beta/alpha
  151. 513303d.155: Pyruvoyl-dependent histidine and arginine decarboxylases [56270] (1 superfamily)
    duplication of beta-alpha-beta(2) motif; 4 layers: alpha/beta/beta/alpha; contains "silk" beta-sandwich
  152. 513346d.156: S-adenosylmethionine decarboxylase [56275] (1 superfamily)
    duplication of beta-alpha-beta(4)-alpha-beta-alpha-beta(2) motif; 4 layers a/b/b/a; antiparallel beta-sheets: order 23451687
  153. 513372d.157: Metallo-hydrolase/oxidoreductase [56280] (1 superfamily)
    duplication of beta(4)-alpha-beta-alpha motif; 4 layers a/b/b/a; mixed beta-sheets
  154. 513455d.159: Metallo-dependent phosphatases [56299] (1 superfamily)
    4 layers: alpha/beta/beta/alpha; mixed beta sheets; contains duplication
  155. 513563d.160: Carbon-nitrogen hydrolase [56316] (1 superfamily)
    4 layers: alpha/beta/beta/alpha; mixed beta sheets; contains duplication
  156. 513598d.161: ADC synthase [56321] (1 superfamily)
    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
  157. 513617d.162: LDH C-terminal domain-like [56326] (1 superfamily)
    unusual fold, defines family
  158. 513818d.163: DNA breaking-rejoining enzymes [56348] (1 superfamily)
    core: alpha3-beta3-alpha4; one side of beta-sheet is exposed
  159. 513906d.164: SMAD MH1 domain [56365] (1 superfamily)
    consists of four alpha-helices and three beta-ribbons
  160. 513915d.165: Ribosome inactivating proteins (RIP) [56370] (1 superfamily)
    contains mixed beta-sheet
  161. 514038d.166: ADP-ribosylation [56398] (1 superfamily)
    unusual fold
  162. 514178d.167: Peptide deformylase [56419] (1 superfamily)
    alpha-beta(5)-alpha; 3 layers: a/b/a; meander beta-sheet wraps around the C-terminal alpha-helix
  163. 514266d.168: Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain [56424] (1 superfamily)
    unusual fold
  164. 514330d.169: C-type lectin-like [56435] (1 superfamily)
    unusual fold
  165. 514781d.170: SRCR-like [56486] (2 superfamilies)
    unusual fold; disulfide-rich; core: beta-x-alpha-beta-loop-beta
  166. 514798d.171: Fibrinogen C-terminal domain-like [56495] (1 superfamily)
    unusual fold
  167. 514898d.172: gp120 core [56501] (1 superfamily)
    unusual fold
  168. 514908d.173: Methionine synthase activation domain-like [56506] (1 superfamily)
    unusual fold; core: beta-alpha(2)-beta(2)-alpha(2)-beta-alpha-beta; antiparallel beta-sheet: order 12354
  169. 514921d.174: Nitric oxide (NO) synthase oxygenase domain [56511] (1 superfamily)
    unusual fold
  170. 515110d.175: Penicillin binding protein dimerisation domain [56518] (1 superfamily)
    unusual fold
  171. 515137d.176: Sulfite oxidase, middle catalytic domain [56523] (1 superfamily)
    unusual fold; contains 3 layers of beta-sheet structure and a beta-grasp like motif
  172. 515151d.177: FAH [56528] (1 superfamily)
    unusual fold; contains 3 layers of beta-sheet structure
  173. 515203d.178: Aromatic aminoacid monoxygenases, catalytic and oligomerization domains [56533] (1 superfamily)
    unusual fold
  174. 515236d.179: Substrate-binding domain of HMG-CoA reductase [56541] (1 superfamily)
    unusual fold
  175. 515288d.180: Conserved core of transcriptional regulatory protein vp16 [56547] (1 superfamily)
    unusual fold
  176. 515294d.181: Insert subdomain of RNA polymerase alpha subunit [56552] (1 superfamily)
    unusual fold; contains a left-handed beta-alpha-beta unit
  177. 515321d.182: Baseplate structural protein gp11 [56557] (1 superfamily)
    unusual fold; trimer
  178. 515329d.183: Major capsid protein gp5 [56562] (1 superfamily)
    unusual fold
  179. 515341d.184: Non-globular alpha+beta subunits of globular proteins [56567] (1 superfamily)
    not a true fold
  180. 515367d.185: LuxS/MPP-like metallohydrolase [63410] (1 superfamily)
    core: beta-alpha-beta(2)-alpha(2); 2 layers: alpha/beta
  181. 515564d.186: Head-to-tail joining protein W, gpW [64209] (1 superfamily)
    alpha-beta(2)-alpha; antiparallel hairpin
  182. 515570d.187: Photosystem I subunit PsaD [64233] (1 superfamily)
    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
  183. 515576d.188: Prokaryotic ribosomal protein L17 [64262] (1 superfamily)
    alpha-beta-alpha(3)-beta(2); 2 layers: alpha/beta;
  184. 515590d.189: PX domain [64267] (1 superfamily)
    beta(3)-alpha(4); meander beta-sheet packed against array of helices; contains Pro-rich stretch
  185. 515611d.190: Chorismate lyase [64287] (1 superfamily)
    duplication of alpha(2)-beta(3) motif; antiparallel beta sheet, order 123654
  186. 515621d.192: YlxR-like [64375] (1 superfamily)
    alpha+beta fold; could have evolved from a glucocorticoid receptor-like zinc finger domain
  187. 515627d.193: Hsp33 domain [64396] (1 superfamily)
    3 layers: beta/alpha/beta; buried helix
  188. 515634d.194: CNF1/YfiH-like putative cysteine hydrolases [64437] (1 superfamily)
    4 layers: alpha/beta/beta/alpha; mixed beta sheets
  189. 515660d.195: YopH tyrosine phosphatase N-terminal domain [64448] (1 superfamily)
    consists of four alpha-helices and two beta-hairpins
  190. 515669d.196: Outer capsid protein sigma 3 [64464] (1 superfamily)
    unusual fold
  191. 515679d.197: Protein-L-isoaspartyl O-methyltransferase, C-terminal domain [68929] (1 superfamily)
    beta-alpha-beta(4)-alpha-beta(2); 3 layers: beta/alpha/beta; buried helix
  192. 515686d.198: Secretion chaperone-like [69634] (2 superfamilies)
    alpha-beta(3)-alpha-beta(2)-alpha; 2 layers: alpha/beta
  193. 515750d.199: DNA-binding C-terminal domain of the transcription factor MotA [69651] (1 superfamily)
    alpha-beta(4)-alpha-beta(2)-alpha; 2 layers: alpha/beta
  194. 515761d.200: Integrin beta tail domain [69686] (1 superfamily)
    alpha-beta-loop-beta(3); loop across free side of beta-sheet
  195. 515769d.201: SRP19 [69694] (1 superfamily)
    beta-alpha-beta(2)-alpha; 2 layers: alpha/beta
  196. 515782d.202: Transcription factor NusA, N-terminal domain [69704] (1 superfamily)
    alpha-beta(3)-alpha-beta-alpha; bifurcated coiled beta-sheet
  197. 515792d.203: DsrC, the gamma subunit of dissimilatory sulfite reductase [69720] (1 superfamily)
    beta(3)-alpha(5); meander beta-sheet packed against array of helices
  198. 515798d.204: Ribosome binding protein Y (YfiA homologue) [69753] (1 superfamily)
    beta-alpha-beta(3)-alpha; 2 layers; mixed sheet 1234, strand 3 is antiparallel to the rest
  199. 515807d.205: GTP cyclohydrolase I feedback regulatory protein, GFRP [69760] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha-beta(2); 2 layers, alpha/beta, antiparallel beta-sheet: order 342165
  200. 515847d.206: YggU-like [69785] (1 superfamily)
    beta(2)-loop-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243; some similarity to the Homing endonuclease-like fold
  201. 515856d.207: Thymidylate synthase-complementing protein Thy1 [69795] (1 superfamily)
    complex alpha+beta fold; contains antiparallel 5-stranded beta-sheet: order 12354
  202. 515897d.208: MTH1598-like [69818] (1 superfamily)
    beta(2)-alpha-beta-alpha-beta(4); 3 layers: beta/alpha/beta; some similarity to the Hsp33 fold
  203. 515906d.209: LCCL domain [69847] (1 superfamily)
    unusual fold
  204. 515912d.210: Argininosuccinate synthetase, C-terminal domain [69863] (1 superfamily)
    unusual fold
  205. 515955d.211: beta-hairpin-alpha-hairpin repeat [74651] (2 superfamilies)
    multiple repeats of beta(2)-alpha(2) motif
  206. 516041d.212: TolA/TonB C-terminal domain [74652] (1 superfamily)
    beta(2)-alpha-beta; 2 layers, alpha/beta; left-handed beta-alpha-beta unit in non-swapped monomer
  207. 516055d.213: VSV matrix protein [75403] (1 superfamily)
    beta-alpha(2)-beta(4)-alpha-beta(2); two layers: alpha/beta; bifurcated coiled beta-sheet: order of the first 5 strands: 23154
  208. 516061d.214: Hypothetical protein MTH1880 [75411] (1 superfamily)
    beta-alpha-beta(2)-alpha(2); 3 layers, alpha/beta/alpha; antiparallel beta-sheet: order 123
  209. 516068d.215: Smc hinge domain [75552] (1 superfamily)
    consists of 2 different alpha+beta subdomains; forms subdomain-swapped dimers
  210. 516083d.216: Rotavirus NSP2 fragment, N-terminal domain [75573] (1 superfamily)
    consists of six alpha-helices and two beta-hairpins
  211. 516089d.217: SAND domain-like [63762] (1 superfamily)
    core: three short helices packed against a barrel-like beta-sheet; some similarity to the SH3-like fold
  212. 516107d.218: Nucleotidyltransferase [81302] (1 superfamily)
    core: alpha-beta-turn-beta-X-beta-(alpha); mixed beta-sheet, order of core strands: 123
  213. 516314d.219: Protein serine/threonine phosphatase 2C, catalytic domain [81607] (1 superfamily)
    4 layers: alpha/beta/beta/alpha; antiparallel beta sheets
  214. 516320d.220: Metal cation-transporting ATPase, ATP-binding domain N [81661] (1 superfamily)
    unusual fold; core: beta-alpha(2)-beta(3)-alpha(2)-beta(2); 6-stranded antiparallel beta-sheet, order: 165432
  215. 516344d.221: Nuclease A inhibitor (NuiA) [82601] (1 superfamily)
    alpha-beta-alpha-beta-alpha(2)-beta(3); antiparallel beta-sheet; order: 15432
  216. 516351d.222: YbaB-like [82606] (1 superfamily)
    core: alpha-beta(3)-alpha, 2 layers:alpha/beta, three-stranded antiparallel beta sheet, strand order 123
  217. 516363d.223: Polo-box domain [82614] (1 superfamily)
    beta(6)-alpha; antiparallel beta-sheet, meander
  218. 516387d.224: SufE/NifU [82648] (1 superfamily)
    alpha(2)-beta(3)-alpha(3); 2 layers alpha/beta, 3-stranded antiparallel beta-sheet; order 123
  219. 516404d.225: Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains [82713] (1 superfamily)
    Intertwined pseudo hexamer of an alpha+beta motif
  220. 516421d.226: GIY-YIG endonuclease [82770] (1 superfamily)
    beta(2)-alpha(2)-beta-alpha-(beta); strand 4 is very short; 3 layers; antiparallel (mixed) beta-sheet; order 312(4)
  221. 516429d.227: OsmC-like [82783] (1 superfamily)
    swapped dimer of beta(3)-alpha-beta(2)-alpha(2)-beta subunits; mixed beta-sheet; order: 321[4][5][6]; buried helix
  222. 516476d.228: Replication modulator SeqA, C-terminal DNA-binding domain [82807] (1 superfamily)
    consists of seven alpha-helices and three-stranded beta-sheet
  223. 516486d.229: Putative cell cycle protein MesJ, middle and C-terminal domain [82828] (1 superfamily)
    consists of two different alpha+beta domains
  224. 516492d.230: Dodecin subunit-like [88797] (3 superfamilies)
    beta-alpha-beta(2); 2 layers: alpha/beta; antiparallel beta-sheet: order 132
  225. 516509d.231: Receptor-binding domain of short tail fibre protein gp12 [88873] (1 superfamily)
    unusual fold; trimer
  226. 516516d.232: Mago nashi protein [89816] (1 superfamily)
    beta(4)-alpha-beta(2)-alpha; 2 layers: alpha/beta; antiparallel beta-sheet, order: 651234
  227. 516528d.233: Inhibitor of vertebrate lysozyme, Ivy [89871] (1 superfamily)
    alpha(2)-beta(5)-alpha(2); 3 layers a/b/a; meander beta-sheet
  228. 516538d.234: Proguanylin [89889] (1 superfamily)
    beta(2)-alpha(3)-beta; two layers: alpha/beta; antiparallel sheet: order 213
  229. 516544d.235: FYSH domain [89894] (1 superfamily)
    beta(2)-alpha(2)-beta(2)-alpha-beta; two layers: alpha/beta; antiparallel sheet: order 51234
  230. 516555d.236: DNA-binding protein Tfx [89914] (1 superfamily)
    alpha(3)-beta-alpha(2)-beta(2); 2 layers alpha/beta, 3-stranded antiparallel beta-sheet; order 123
  231. 516561d.237: Hypothetical protein YjiA, C-terminal domain [90001] (1 superfamily)
    beta-alpha-beta(4)-alpha; 2 layers: a/b; antiparallel sheet 15234; topological similarity to the HPr-like fold
  232. 516567d.238: Hypothetical protein TM0875 [90063] (1 superfamily)
    unusual fold; core: beta(2)-loop-beta(2)-alpha-beta; mixed beta-sheet: order 51243; parallel strands 2 and 4
  233. 516573d.239: GCM domain [90072] (1 superfamily)
    consists of two different alpha+beta subdomains; 2 zinc-binding sites
  234. 516579d.240: Lesion bypass DNA polymerase (Y-family), little finger domain [100878] (1 superfamily)
    beta-alpha-beta(2)-alpha-beta; antiparallel beta-sheet: order 1423; "reversed" ferredoxin-like topology
  235. 516622d.241: Ribosome binding domain-like [100965] (2 superfamilies)
    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
  236. 516644d.242: Obg GTP-binding protein C-terminal domain [102740] (1 superfamily)
    beta-(2)-alpha(3)-beta(2); 2 layers: beta/alpha; mixed beta-sheet: order 1234; strands 2 and 3 a parallel to each other
  237. 516650d.243: Colicin D nuclease domain [102823] (1 superfamily)
    alpha(2)-beta(4)-alpha, 2 layers: alpha/beta, antiparallel beta sheet, meander
  238. 516656d.244: Cell division protein ZapA-like [102828] (1 superfamily)
    core: beta(2)-alpha(2), 2 layers: alpha/beta; long C-terminal helix forms dimeric parallel and tetrameric antiparallel coiled coils
  239. 516667d.245: NSFL1 (p97 ATPase) cofactor p47, SEP domain [102847] (1 superfamily)
    beta(3)-alpha(2)-beta; 2 layers; mixed beta-sheet, order 4123, strands 1 and 4 are parallel to each other
  240. 516673d.246: mRNA decapping enzyme DcpS N-terminal domain [102859] (1 superfamily)
    beta(3)-alpha-beta(3)-alpha; 3 layers a/b/a
  241. 516685d.247: Chromosomal protein MC1 [102874] (1 superfamily)
    beta(2)-alpha-beta(3); 2 layers: alpha/beta
  242. 516691d.248: Coproporphyrinogen III oxidase [102885] (1 superfamily)
    alpha-beta(6)-alpha(2)-beta-alpha(n); 3 layers alpha/beta/alpha; antiparallel sheet: order 1234567
  243. 516709d.249: Hypothetical protein Ta1206 [102890] (1 superfamily)
    beta(4)-alpha-beta(2)-alpha(2); mixed, predominately antiparallel beta-sheet, order: 123465, strands 4 and 5 are parallel to each other
  244. 516715d.250: Aminomethyltransferase folate-binding domain [103024] (1 superfamily)
    duplication: consists of two beta(2)-alpha-beta(3)-alpha subdomains swapped with the first strands
  245. 516735d.251: Hypothetical protein YwqG [103031] (1 superfamily)
    duplication: contains two similar beta-x-beta(4) motifs swapped with the first strands
  246. 516741d.252: CheC-like [103038] (1 superfamily)
    duplication: tandem repeat of two intertwined alpha-beta-(BETA)-beta(2) motifs; dimer
  247. 516748d.253: Hypothetical protein YoaG [103062] (1 superfamily)
    dimer of beta(2)-alpha motifs ; 2 layers, alpha/beta; reverse MinE topology
  248. 516755d.254: Arterivirus nucleocapsid protein [103067] (1 superfamily)
    dimer of alpha-beta(2)-alpha motifs ; 2 layers, alpha/beta
  249. 516762d.255: Tombusvirus P19 core protein, VP19 [103144] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha; 2 layers: alpha/beta; antiparallel sheet: order 2134
  250. 516771d.256: Hypothetical protein Ta1353 [103164] (1 superfamily)
    core: beta-alpha-beta(2)-alpha-beta-alpha-beta; 3 layers: a/b/a; antiparallel beta-sheet of 5 strands; order: 51423;
  251. 516777d.257: Hypothetical protein TM0160 [103255] (1 superfamily)
    duplication: consists of two beta(3)-alpha(2) structural repeats; single barrel-like beta-sheet
  252. 516784d.258: Chorismate synthase, AroC [103262] (1 superfamily)
    duplication: consists of two DCoH-like beta(2)-alpha-beta(2)-alpha structural repeats; 3 layers, beta/alpha/beta
  253. 516815d.259: Hypothetical protein HI1480 [103276] (1 superfamily)
    beta-alpha(4)-beta-alpha-beta; segregated alpha-helical and beta-sheet subdomains; dimeric beta-sheet barrel: n=6, S=10
  254. 516822d.260: Suppressor of Fused, N-terminal domain [103358] (1 superfamily)
    unusual fold; bifurcated beta-sheet; left-handed beta-alpha-beta unit
  255. 516831d.261: Hypothetical protein PH1602 [103364] (1 superfamily)
    complex alpha+beta fold; contains a region of similarity to the ferredoxin-like fold
  256. 516838d.262: NinB [103369] (1 superfamily)
    unusual fold; intertwined dimer; consists of two different structural domains
  257. 516845d.263: Hypothetical protein Yml108w [100886] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha; 2 layers, alpha/beta; mixed beta-sheet 2143, strands 1 and 4 are parallel
  258. 516851d.264: Prim-pol domain [56746] (1 superfamily)
    consists of two alpha+beta domains
  259. 516867d.265: Pseudouridine synthase [100877] (1 superfamily)
    consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold
  260. 516910d.266: Hypothetical protein MTH677 [110782] (1 superfamily)
    alpha-beta(2)-alpha; 2 layers a/b; antiparallel beta-hairpin
  261. 516916d.267: Hypothetical protein SAV1430 [110835] (1 superfamily)
    beta(3)-alpha-beta(2)-alpha; 2 layers, alpha/beta; antiparallel beta-sheet, order: 12543
  262. 516922d.268: ParB/Sulfiredoxin [110848] (1 superfamily)
    beta*-alpha-beta(2)-alpha-beta-alpha; mixed beta sheet forms a partly open barrel: (n*=4, S*=8)
  263. 516939d.269: BtrG-like (Pfam 03674) [110856] (1 superfamily)
    beta-alpha-beta(4)-alpha-beta(2); contains beta-sheet barrel (n=5, S=8)
  264. 516945d.270: 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain [110920] (1 superfamily)
    duplication: consists of two beta(3)-alpha repeats; 3 layers, beta/alpha/beta
  265. 516952d.271: HSP90 C-terminal domain (C-terminal part of Pfam 00183) [110941] (1 superfamily)
    alpha-beta(3)-alpha(3); 2 layers, a/b; mixed beta-sheet, order:132; crossing loops
  266. 516965d.272: Dystroglycan, domain 2 [111005] (1 superfamily)
    beta-alpha-beta-X-beta(2)-alpha(2)-beta; antiparallel beta-sheet, order 24153; topological similarity to the ferredoxin-like fold (scop_cf 54861)
  267. 516971d.273: YjbQ-like (Pfam 01894) [111037] (1 superfamily)
    beta(2)-alpha-beta(2)-alpha(2)-beta(3); contains a beta-sandwich: 7 strands in 2 sheets; trimerizes with orthogonally packed beta-sheets
  268. 516979d.274: Hypothetical protein PF0899 [111056] (1 superfamily)
    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)
  269. 516985d.275: Hut operon positive regulatory protein HutP [111063] (1 superfamily)
    alpha(2)-beta-alpha(2)-beta(3); 3 layers: a/b/a; antiparallel beta-sheet: order 1234
  270. 516992d.276: Hypothetical protein yfbM [111068] (1 superfamily)
    beta-alpha(2)-beta-alpha(2)-beta(2)-alpha(n)-beta; 3 layers: a/b/a; antiparallel beta-sheet, order: 21543
  271. 516999d.277: Bacillus phage protein [111073] (1 superfamily)
    alpa-beta(3)-alpha-beta(3)-alpha; 3 layers: b/a/b, 3-helical bundle flanked by two 3-stranded meander beta-sheets
  272. 517006d.278: H-NOX domain [111125] (1 superfamily)
    binds heme between the N-terminal 4-helical bundle and the C-terminal alpha-beta(2)-alpha-beta(2) subdomains
  273. 517018d.279: YggX-like (Pfam 04362) [111147] (1 superfamily)
    beta(2)-alpha(3); contains zinc-less 'zinc finger'-like fold (scop_cf 57715; see also scop_cf 64375)
  274. 517024d.280: Sulfolobus fructose-1,6-bisphosphatase-like [111248] (1 superfamily)
    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)
  275. 517030d.281: Hemolytic lectin CEL-III, C-terminal domain [111264] (1 superfamily)
    unusual fold
  276. 517037d.282: SSo0622-like (Pfam 02676) [111277] (1 superfamily)
    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
  277. 517044d.283: Putative modulator of DNA gyrase, PmbA/TldD (Pfam 01523) [111282] (1 superfamily)
    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)]
  278. 517051d.284: PurS-like [109622] (1 superfamily)
    consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold
  279. 517069d.285: DNA-binding domain of intron-encoded endonucleases [64495] (1 superfamily)
    beta(2)-alpha(2)-beta; 2 layers; 3-stranded antiparallel beta-sheet, order 213; HTH motif; also includes the extra N-terminal, DNA minor groove-binding helix

More info for Class d: Alpha and beta proteins (a+b)

Timeline for Class d: Alpha and beta proteins (a+b):