Lineage for Class a: All alpha proteins

  1. Root: SCOP 1.63
  2. 208553Class a: All alpha proteins [46456] (171 folds)

Folds:

  1. 208554a.1: Globin-like [46457] (2 superfamilies)
    core: 6 helices; folded leaf, partly opened
  2. 209616a.2: Long alpha-hairpin [46556] (11 superfamilies)
    2 helices; antiparallel hairpin, left-handed twist
  3. 209874a.3: Cytochrome c [46625] (1 superfamily)
    core: 3 helices; folded leaf, opened
  4. 210246a.4: DNA/RNA-binding 3-helical bundle [46688] (11 superfamilies)
    core: 3-helices; bundle, closed or partly opened, right-handed twist; up-and down
  5. 211141a.5: RuvA C-terminal domain-like [46928] (5 superfamilies)
    3 helices; bundle, right-handed twist
  6. 211202a.6: Putative DNA-binding domain [46954] (1 superfamily)
    core: 3 helices; architecture is similar to that of the "winged helix" fold but topology is different
  7. 211240a.7: Spectrin repeat-like [46965] (7 superfamilies)
    3 helices; bundle, closed, left-handed twist; up-and-down
  8. 211352a.8: immunoglobulin/albumin-binding domain-like [46996] (2 superfamilies)
    3 helices; bundle, closed, left-handed twist; up-and-down; mirror topology to the spectrin-like fold
  9. 211382a.9: Peripheral subunit-binding domain of 2-oxo acid dehydrogenase complex [47004] (1 superfamily)
    3 helices; bundle, closed, right-handed twist; up-and-down
  10. 211396a.10: Protozoan pheromone proteins [47013] (1 superfamily)
    3 helices; bundle, closed, left-handed twist, up-and-down
  11. 211415a.11: Acyl-CoA binding protein-like [47026] (2 superfamilies)
    core: 3 helices; bundle, closed, left-handed twist; up-and-down
  12. 211464a.12: Kix domain of CBP (creb binding protein) [47039] (1 superfamily)
    3 helices; bundle, partly opened
  13. 211470a.13: alpha-2-Macroglobulin receptor associated protein (RAP) domain 1 [47044] (1 superfamily)
    3 helices, the first one is shorter than the other two; bundle, partly opened
  14. 211477a.14: Thermostable subdomain from chicken villin headpiece [47049] (1 superfamily)
    3 short helices; irregular array
  15. 211484a.15: TAF(II)230 TBP-binding fragment [47054] (1 superfamily)
    3 short helices; irregular array
  16. 211490a.16: S15/NS1 RNA-binding domain [47059] (1 superfamily)
    3 helices; irregular array
  17. 211529a.17: p8-MTCP1 [47071] (1 superfamily)
    3 helices; irregular array; disulfide-rich
  18. 211536a.18: T4 endonuclease V [47076] (1 superfamily)
    3 helices; irregular array
  19. 211546a.19: Fertilization protein [47081] (1 superfamily)
    core: 3 helices; bundle, closed, right-handed twist; up-and-down
  20. 211565a.20: PGBD-like [47089] (1 superfamily)
    core: 3 helices; bundle, closed, left-handed twist; parallel
  21. 211587a.21: HMG-box [47094] (1 superfamily)
    3 helices; irregular array
  22. 211635a.22: Histone-fold [47112] (1 superfamily)
    core: 3 helices; long middle helix is flanked at each end with shorter ones
  23. 211800a.23: Open three-helical up-and-down bundle [47143] (5 superfamilies)
    core: 3 helices; bundle, open
  24. 211870a.24: Four-helical up-and-down bundle [47161] (16 superfamilies)
    core: 4 helices; bundle, closed or partly opened, left-handed twist; up-and-down
  25. 212183a.25: Ferritin-like [47239] (1 superfamily)
    core: 4 helices; bundle, closed, left-handed twist; 1 crossover connection
  26. 212476a.26: 4-helical cytokines [47265] (1 superfamily)
    core: 4 helices; bundle, closed; left-handed twist; 2 crossover connections
  27. 212677a.27: Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases [47322] (1 superfamily)
    core: 4 helices; bundle; one loop crosses over one side of the bundle
  28. 212717a.28: Acyl carrier protein-like [47335] (3 superfamilies)
    4 helices, bundle; helix 3 is shorter than others; up-and-down
  29. 212790a.29: Bromodomain-like [47363] (4 superfamilies)
    4 helices; bundle; minor mirror variant of up-and-down topology
  30. 212866a.30: ROP-like [47379] (2 superfamilies)
    4 helices; dimer of identical alpha-hairpin subunits; bundle, closed, left-handed twist
  31. 212900a.31: Dimerization-anchoring domain of cAMP-dependent type II PK regulatory subunit [47390] (1 superfamily)
    4 helices; bundle, closed, right-handed twist
  32. 212909a.32: Transcription factor IIA (TFIIA), N-terminal domain [47395] (1 superfamily)
    4 helices; bundle, closed, right-handed twist
  33. 212916a.33: Ectatomin, A & B chains [47400] (1 superfamily)
    4 helices; bundle, closed, left-handed twist
  34. 212923a.34: SinR repressor dimerisation domain-like [47405] (1 superfamily)
    4 helices; bundle, closed, right-handed twist
  35. 212948a.35: lambda repressor-like DNA-binding domains [47412] (1 superfamily)
    core: 4 helices; folded leaf, closed
  36. 213099a.36: Signal peptide-binding domain [47445] (1 superfamily)
    4 helices; orthogonal array
  37. 213115a.37: A DNA-binding domain in eukaryotic transcription factors [47453] (1 superfamily)
    4 helices; the long C-terminal helix protrudes from the domain and binds to DNA
  38. 213124a.38: Helix-loop-helix DNA-binding domain [47458] (1 superfamily)
    4-helices; bundle, closed, left-handed twist; 2 crossover connections
  39. 213166a.39: EF Hand-like [47472] (4 superfamilies)
    core: 4 helices; array of 2 hairpins, opened
  40. 213668a.40: CH domain-like [47575] (2 superfamilies)
    core: 4 helices: bundle
  41. 213705a.41: Domain of poly(ADP-ribose) polymerase [47586] (1 superfamily)
    core: 4 helices: bundle; unusual topology
  42. 213720a.42: MDM2 [47591] (1 superfamily)
    core: 4 helices: open bundle; capped by two small 3-stranded beta-sheets
    duplication: consists of two structural repeats
  43. 213728a.43: Met repressor-like [47597] (1 superfamily)
    core: 4 helices; array of 2 hairpins, opened
  44. 213823a.44: Disulphide-bond formation facilitator (DSBA), insertion domain [47609] (1 superfamily)
    4 helices; bundle, partly opened, left-handed twist; up-and-down
  45. 213854a.45: Glutathione S-transferase (GST), C-terminal domain [47615] (1 superfamily)
    core: 4 helices; bundle, closed, left-handed twist; right-handed superhelix
  46. 214199a.46: Methionine synthase domain-like [47643] (2 superfamilies)
    4 helices; bundle, left-handed twist; right-handed superhelix
  47. 214234a.47: STAT-like [47654] (2 superfamilies)
    4 long helices; bundle, left-handed twist (coiled colil); right-handed superhelix
  48. 214262a.48: N-cbl like [47667] (3 superfamilies)
    4 helices; bundle, left-handed twist; left-handed superhelix
  49. 214292a.49: C-terminal domain of B transposition protein [47680] (1 superfamily)
    4 helices; irregular array
  50. 214298a.50: Anaphylotoxins (complement system) [47685] (1 superfamily)
    4 helices; irregular array, disulphide-linked
  51. 214310a.51: Cytochrome c oxidase subunit h [47693] (1 superfamily)
    4 helices; irregular array, disulphide-linked
  52. 214325a.52: Bifunctional inhibitor/lipid-transfer protein/seed storage 2S albumin [47698] (1 superfamily)
    4 helices; folded leaf; right-handed superhelix
  53. 214379a.53: p53 tetramerization domain [47718] (1 superfamily)
    core: 4 helices; bundle
  54. 214442a.54: Domain of early E2A DNA-binding protein, ADDBP [47723] (1 superfamily)
    4 helices; bundle, partly opened
  55. 214453a.55: IHF-like DNA-binding proteins [47728] (1 superfamily)
    core: 4 helices; bundle, partly opened, capped with a beta-sheet
  56. 214480a.56: CO dehydrogenase ISP C-domain like [47740] (1 superfamily)
    core: 4 helices, bundle
  57. 214520a.57: Protein HNS-dependent expression A; HdeA [47751] (1 superfamily)
    4 helices; the three last helices form a bundle similar to that of the RuvA C-domain
  58. 214534a.58: Chemotaxis receptor methyltransferase CheR, N-terminal domain [47756] (1 superfamily)
    4 helices; an orthogonal array
  59. 214541a.59: PAH2 domain [47761] (1 superfamily)
    4 helices; open up-and-down bundle; binds alpa-helical peptides
  60. 214550a.60: SAM domain-like [47768] (13 superfamilies)
    4-5 helices; bundle of two orthogonally packed alpha-hairpins; involved in the interactions with DNA and proteins
  61. 214989a.61: Retroviral matrix proteins [47835] (1 superfamily)
    4-5 helices; right-handed superhelix
  62. 215031a.62: Hepatitis B viral capsid (hbcag) [47851] (1 superfamily)
    5 helices; array; two long helices form a hairpin that dimerises into a 4-helical bundle
  63. 215040a.63: Apolipophorin-III [47856] (1 superfamily)
    5 helices; bundle, closed, left-handed twist
  64. 215048a.64: Saposin-like [47861] (2 superfamilies)
    5 helices; folded leaf, closed
  65. 215074a.65: Annexin [47873] (1 superfamily)
    5 helices; folded leaf, closed
  66. 215151a.66: Transducin (alpha subunit), insertion domain [47894] (1 superfamily)
    5 helices; folded leaf
  67. 215195a.68: Wiscott-Aldrich syndrome protein, WASP, C-terminal domain [47911] (1 superfamily)
    5 helices; irregular array; left-handed superhelix
  68. 215201a.69: Left-handed superhelix [47916] (3 superfamilies)
    core: 4-5 helices; bundle; left-handed superhelix
  69. 215286a.70: N-terminal domain of the delta subunit of the F1F0-ATP synthase [47927] (1 superfamily)
    core: 5 helices; bundle
  70. 215292a.71: ERP29 C domain-like [47932] (2 superfamilies)
    5 helices; bundle
  71. 215308a.72: Functional domain of the splicing factor Prp18 [47937] (1 superfamily)
    core: 5 helices; bundle
  72. 215315a.73: Retrovirus capsid protein, N-terminal core domain [47942] (1 superfamily)
    core: 5 helices; bundle
  73. 215344a.74: Cyclin-like [47953] (1 superfamily)
    core: 5 helices; one helix is surrounded by the others
  74. 215474a.75: Ribosomal protein S7 [47972] (1 superfamily)
    core: 5 helices; contains one more helix and a beta-hairpin outside the core
  75. 215498a.76: Iron-dependent represor protein, dimerization domain [47978] (1 superfamily)
    6 helices, homodimer of 3-helical domains
  76. 215538a.77: DEATH domain [47985] (1 superfamily)
    6 helices: closed bundle; greek-key; internal pseudo twofold symmetry
  77. 215591a.78: Fatty acid responsive transcription factor FadR, C-terminal domain [48007] (1 superfamily)
    core: 6 helices: closed bundle; greek-key; internal pseudo twofold symmetry
  78. 215604a.79: Antitermination factor NusB [48012] (1 superfamily)
    6 helices: bundle; one central helix is surrounded by 5 others
  79. 215613a.80: DNA polymerase III clamp loader subunits, C-terminal domain [48018] (1 superfamily)
    core: 5 helices: bundle
  80. 215638a.81: N-terminal domain of DnaB helicase [48023] (1 superfamily)
    6 helices: array
  81. 215648a.83: Guanido kinase N-terminal domain [48033] (1 superfamily)
    irregular array of 6 short helices
  82. 215684a.84: Scaffolding protein gpD of bacteriophage procapsid [48044] (1 superfamily)
    core: 6 helices; one central helix is surrounded by 5 others
  83. 215697a.85: Hemocyanin, N-terminal domain [48049] (1 superfamily)
    6 helices; bundle; one central helix is surrounded by 5 others
  84. 215714a.86: Di-copper centre-containing domain [48055] (1 superfamily)
    multihelical
  85. 215745a.87: DBL homology domain (DH-domain) [48064] (1 superfamily)
    multihelical; core: 5-helical bundle
  86. 215777a.88: LigA subunit of an aromatic-ring-opening dioxygenase LigAB [48075] (1 superfamily)
    multihelical; contains compact array of 6 short helices
  87. 215786a.89: Methyl-coenzyme M reductase alpha and beta chain C-terminal domain [48080] (1 superfamily)
    multihelical bundle; contains buried central helix
  88. 215825a.90: Transcription factor STAT-4 N-domain [48091] (1 superfamily)
    multihelical; can be divided into two subdomains
  89. 215831a.91: Regulator of G-protein signalling, RGS [48096] (1 superfamily)
    multihelical; consists of two all-alpha subdomains
    contains a 4-helical bundle with left-handed twist and up-and-down topology
  90. 215860a.92: Carbamoyl phosphate synthetase, large subunit connection domain [48107] (1 superfamily)
    multihelical; consists of two all-alpha subdomains
    possible duplication: subdomains have similar topologies
  91. 215901a.93: Heme-dependent peroxidases [48112] (1 superfamily)
    multihelical; consists of two all-alpha domains
  92. 216156a.94: Ribosomal protein L19 (L19e) [48139] (1 superfamily)
    multihelical; consists of two different 3-helical domains connected by a long, partly helical linker
  93. 216169a.95: Influenza virus matrix protein M1 [48144] (1 superfamily)
    multihelical; consists of two different all-alpha subdomains, 4 helices each
  94. 216178a.96: DNA-glycosylase [48149] (1 superfamily)
    multihelical; consists of two all-alpha domains
  95. 216220a.97: An anticodon-binding domain of class I aminoacyl-tRNA synthetases [48162] (1 superfamily)
    multihelical; consists of two all-alpha domains
  96. 216239a.98: R1 subunit of ribonucleotide reductase, N-terminal domain [48167] (1 superfamily)
    multihelical consists of two all-alpha subdomains
    subdomain 1 (residues 10-100) is a 4-helical bundle
  97. 216266a.99: Cryptochrome/photolyase FAD-binding domain [48172] (1 superfamily)
    multihelical; consists of two all-alpha subdomains
  98. 216282a.100: 6-phosphogluconate dehydrogenase C-terminal domain-like [48178] (1 superfamily)
    multihelical; common core is formed around two long antiparallel helices related by (pseudo) twofold symmetry
  99. 216359a.101: Uteroglobin-like [48200] (1 superfamily)
    multihelical
  100. 216372a.102: alpha/alpha toroid [48207] (5 superfamilies)
    multihelical; up to seven alpha-hairpins are arranged in closed circular array
  101. 216592a.103: Citrate synthase [48255] (1 superfamily)
    multihelical; consists of two all-alpha domains
  102. 216631a.104: Cytochrome P450 [48263] (1 superfamily)
    multihelical
  103. 216772a.105: FIS-like [48282] (1 superfamily)
    multihelical; intertwined dimer of identical 4-helical subunits
  104. 216807a.108: Ribosomal protein L7/12, oligomerisation (N-terminal) domain [48299] (1 superfamily)
    multihelical; intertwined tetramer
  105. 216820a.109: MHC class II-associated invariant chain ectoplasmic trimerization domain [48304] (1 superfamily)
    multihelical; intertwined trimer of identical 3-helical subunits
  106. 216828a.110: Aldehyde ferredoxin oxidoreductase, C-terminal domains [48309] (1 superfamily)
    multihelical; consists of two all-alpha domains
  107. 216845a.111: Acid phosphatase/Vanadium-dependent haloperoxidase [48316] (1 superfamily)
    multihelical; core: 5-helical bundle; binds cofactor at the beginning of third helix
  108. 216884a.112: RNA polymerase sigma subunit [48328] (1 superfamily)
    multihelical; consists of several all-alpha subdomains
  109. 216907a.113: DNA repair protein MutS, domain III [48333] (1 superfamily)
    multihelical; consists of 2 all-alpha subdomains
  110. 216923a.114: Interferon-induced guanylate-binding protein 1 (GBP1), C-terminal domain [48339] (1 superfamily)
    multihelical; bundle of longer and shorter helices
  111. 216930a.115: A virus capsid protein alpha-helical domain [48344] (1 superfamily)
    multihelical; three-helical bundle in the core is surrounded by non-conserved helices
  112. 216958a.116: GTPase activation domain, GAP [48349] (1 superfamily)
    multihelical
  113. 216987a.117: Ras GEF [48365] (1 superfamily)
    multihelical
  114. 216993a.118: alpha-alpha superhelix [48370] (17 superfamilies)
    multihelical; 2 (curved) layers: alpha/alpha; right-handed superhelix
  115. 217368a.119: Lipoxigenase [48483] (1 superfamily)
    multihelical
    large nearly all-alpha domain
  116. 217389a.120: gene 59 helicase assembly protein [48492] (1 superfamily)
    multihelical; consists of two all-alpha subdomains
  117. 217395a.121: Tetracyclin repressor-like, C-terminal domain [48497] (1 superfamily)
    multihelical; interlocked (homo)dimer
  118. 217440a.123: Nuclear receptor ligand-binding domain [48507] (1 superfamily)
    multihelical; 3 layers or orthogonally packed helices
  119. 217615a.124: Phospholipase C/P1 nuclease [48536] (1 superfamily)
    multihelical
  120. 217636a.125: Catalytic domain of cyclic nucleotide phosphodiesterase 4b2b [48546] (1 superfamily)
    multihelical; can be divided into three subdomains
  121. 217643a.126: Serum albumin-like [48551] (1 superfamily)
    multihelical; one domain consists of two similar disulphide-linked subdomains
  122. 217746a.127: L-aspartase-like [48556] (1 superfamily)
    multihelical, consists of three all-alpha domains
  123. 217826a.128: Terpenoid synthases [48575] (1 superfamily)
    multihelical; core: 8 helices (C-J) are arranged in 2 parallel layers
  124. 217889a.129: GroEL equatorial domain-like chaperone equatorial domain [48591] (1 superfamily)
    multihelical; 8 helices arranged in 2 parallel layers
  125. 217945a.130: Chorismate mutase II [48599] (1 superfamily)
    multihelical; core: 6 helices, bundle
  126. 217963a.131: Peridinin-chlorophyll protein [48607] (1 superfamily)
    multihelical: forms a boat-shaped protein shell around cofactors
  127. 217974a.132: Heme oxygenase [48612] (1 superfamily)
    multihelical; bundle
  128. 217995a.133: Phospholipase A2, PLA2 [48618] (1 superfamily)
    common core: 2 helices, disulphide-linked, and a calcium-binding loop
  129. 218180a.134: Fungal elicitin [48646] (1 superfamily)
    5 helices: irregular disulfide-linked array; also contains a small beta-hairpin
  130. 218193a.135: Tetraspanin [48651] (1 superfamily)
    5 helices: irregular disulfide-linked array; form homodimer
  131. 218202a.136: Repressor of bacterial conjugation FinO [48656] (1 superfamily)
    6 helices: irregular non-globular array; also contains two small b-hairpins
  132. 218208a.137: Non-globular all-alpha subunits of globular proteins [48661] (9 superfamilies)
  133. 218289a.138: Multiheme cytochromes [48694] (1 superfamily)
    variable number of helices and little beta structure; not a true fold
  134. 218425a.139: Type I dockerin domain [63445] (1 superfamily)
    tandem repeat of two calcium-binding loop-helix motifs, distinct from the EF-hand
  135. 218432a.140: LEM/SAP HeH motif [63450] (4 superfamilies)
    helix-extended loop-helix; parallel helices
  136. 218476a.141: Frizzled cystein-rich domain [63500] (1 superfamily)
    Core: 3 helices; irregular array; disulfide-rich
  137. 218491a.142: PTS-regulatory domain, PRD [63519] (1 superfamily)
    core: 4 helices; bundle, closed, right-handed twist; 1 crossover connection
  138. 218498a.143: RNA polymerase omega subunit [63561] (1 superfamily)
    4 helices; irregular array
  139. 218507a.144: PABP domain-like [63569] (2 superfamilies)
    4 helices; an orthogonal array
  140. 218523a.145: Flagellar transcriptional activator FlhD [63591] (1 superfamily)
    multihelical; forms intertwined dimer of identical 5-helical subunits
  141. 218530a.146: Telomeric repeat binding factor (TRF) dimerisation domain [63599] (1 superfamily)
    multihelical; can be divided into an alpha-alpha superhelix domain and a long alpha-haipin dimerisation domain
  142. 218540a.147: Bcr-Abl oncoprotein oligomerization domain [69035] (1 superfamily)
    core: 4 long helices; bundle
  143. 218553a.148: Arp2/3 complex 21 kDa subunit ARPC3 [69059] (1 superfamily)
    5 helices; one helix is surrounded by the others
  144. 218559a.149: RNase III endonuclease catalytic domain [69064] (1 superfamily)
    core: 5 helices; one helix is surrounded by the others
  145. 218573a.150: Anti-sigma factor AsiA [69069] (1 superfamily)
    core: 5 helices: orthogonal array
  146. 218582a.151: Glutamyl tRNA-reductase dimerization domain [69074] (1 superfamily)
    6 helices, homodimer of 3-helical domains
  147. 218588a.152: Antioxidant defence protein AhpD [69117] (1 superfamily)
    multihelical; bundle
  148. 218614a.153: Nuclear receptor coactivator interlocking domain [69124] (1 superfamily)
    3 helices, non-globular array; forms interlocked heterodimers with its targets
  149. 218624a.154: Variable surface antigen VlsE [74747] (1 superfamily)
    multihelical; consists of two all-alpha subdomains; contains a 4-helical bundle with left-handed twist and up-and-down topology
  150. 218633a.155: H-NS histone-like proteins [81274] (1 superfamily)
    multihelical oligomeric protein; structure of whole subunit is not known yet but are probably composed of three different domains
  151. 218644a.156: S13-like H2TH domain [81297] (1 superfamily)
    core: 3-4 helices
  152. 218697a.157: Skp1 dimerisation domain-like [81384] (1 superfamily)
    multihelical; interlocked heterodimer with F-box proteins
  153. 218719a.158: F-box domain [81385] (1 superfamily)
    multihelical; interlocked heterodimer with the Skp1 dimerisation domain
  154. 218741a.159: Another 3-helical bundle [81602] (2 superfamilies)
    topologically similar to the DNA/RNA-binding bundles; distinct packing
  155. 218752a.160: Poly(A) polymerase, middle domain [81632] (1 superfamily)
    core: 5-helical bundle; up-and-down; right-handed twist
  156. 218761a.161: beta-catenin-interacting protein ICAT [81729] (1 superfamily)
    core: 3 helices; irregular array
  157. 218768a.162: Pre-protein croslinking domain of SecA [81766] (1 superfamily)
    core: 4 helices: bundle; flanked by two short beta-hairpins
    duplication: consists of two structural repeats
  158. 218775a.163: Crustacean CHH/MIH/GIH neurohormone [81777] (1 superfamily)
    4 helices; irregular array, disulphide-linked
  159. 218781a.164: C-terminal domain of DFF45/ICAD (DFF-C domain) [81782] (1 superfamily)
    4 helices; folded leaf; right-handed superhelix
  160. 218788a.165: Myosin phosphatase inhibitor 17kDa protein, CPI-17 [81789] (1 superfamily)
    4 helices; open up-and-down bundle; the N-terminus is trapped within the bundle core
  161. 218794a.166: RuBisCo LSMT C-terminal, substrate-binding domain [81821] (1 superfamily)
    multihelical; irregular array of long and short helices
  162. 218802a.167: Porin chaperone SurA, peptide-binding domain [81826] (1 superfamily)
    multihelical; irregular array of long and short helices
  163. 218811a.168: GEF domain of SopE toxin [81831] (1 superfamily)
    multihelical; consists of two all-alpha subdomains each containing a 3-helical bundle with right-handed twist
  164. 218818a.169: BEACH domain [81836] (1 superfamily)
    multihelical, complex architecture
  165. 218825a.170: BRCA2 helical domain [81871] (1 superfamily)
    multihelical; contains a 3-helical bundle surrounded by several shorter helices
  166. 218835a.171: BRCA2 tower domain [81877] (1 superfamily)
    multihelical; contains a 3-helical Hin recombinase-like subdomain and two long dimerisation helices
  167. 218845a.172: Helical scaffold and wing domains of SecA [81885] (1 superfamily)
    multihelical; consists of 2 all-alpha subdomains
  168. 218852a.173: tRNA CCA-adding enzyme, C-terminal domains [81890] (1 superfamily)
    multihelical; can be divided into three subdomains (neck, body and tail)
  169. 218863a.174: Double Clp-N motif [81922] (1 superfamily)
    multihelical; array
  170. 218883a.175: Orange carotenoid protein, N-terminal domain [81929] (1 superfamily)
    multihelical; array
  171. 218890a.176: N-terminal domain of bifunctional PutA protein [81934] (1 superfamily)
    multihelical; array

More info for Class a: All alpha proteins

Timeline for Class a: All alpha proteins: