Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
alpha bundlesalpha-helix bundles with mainly parallel helices
alpha superhelicesrepeating alpha-helix hairpins form a superhelix
alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain
alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix
beta barrelssingle beta-sheet folded upon itself to form a barrel
beta meanderssingle beta-sheet with mainly meander topology
beta sandwichestwo beta-sheets stacked together to form a sandwich
beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain
beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander
a+b two layersone alpha-helix layer and one beta-sheet layer
looks like an elaborated ferredoxin
contains a HTH motif
Representatives:
e1fm4A1[A:1-159] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MAJOR POLLEN ALLERGEN BET V 1-L ; ligands: DXC ; X-RAY DIFFRACTION 1.97Å
e6awyB1[B:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: NA,SO4 ; X-RAY DIFFRACTION 2.1Å
e6awzA1[A:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: NA ; X-RAY DIFFRACTION 1.90Å
e6awzB1[B:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: NA,PG4 ; X-RAY DIFFRACTION 1.90Å
e6ax0A1[A:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: 28E,NA ; X-RAY DIFFRACTION 2.50Å
e6ax0B1[B:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: 28E,NA ; X-RAY DIFFRACTION 2.50Å
e6b1dB1[B:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; X-RAY DIFFRACTION 2.50Å
e6b1dC1[C:2-157] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen ; ligands: BGC,QUE ; X-RAY DIFFRACTION 2.50Å
e6gq9A1[A:1-161] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen Cor a 1.0401 ; SOLUTION NMR
e6r3cA1[A:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major pollen allergen Bet v 1-A ; SOLUTION NMR
e6rp3A1[A:37-196] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
S-norcoclaurine synthase ; ligands: EDO,KCZ ; X-RAY DIFFRACTION 1.81Å
e6st8A1[A:-2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.04Å
e6st8B1[B:-2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.04Å
e6st9A1[A:-2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; ligands: CL ; X-RAY DIFFRACTION 1.97Å
e6st9B1[B:-2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 1.97Å
e6staA1[A:-1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.195Å
e6staB1[B:-1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.195Å
e6stbA1[A:-1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.267Å
e6stbB1[B:-2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major strawberry allergen Fra a 1-2 ; X-RAY DIFFRACTION 2.267Å
e6sjjB1[B:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjP1[P:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,EPE ; X-RAY DIFFRACTION 2.30Å
e6sjjL1[L:0-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjH1[H:0-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjF1[F:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjD1[D:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjc1[c:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjja1[a:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,FLC ; X-RAY DIFFRACTION 2.30Å
e6sjjZ1[Z:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjY1[Y:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjX1[X:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjW1[W:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjV1[V:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,DMS ; X-RAY DIFFRACTION 2.30Å
e6sjjU1[U:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjS1[S:0-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjj1[j:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,FLC ; X-RAY DIFFRACTION 2.30Å
e6sjjg1[g:0-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjA1[A:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjR1[R:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjQ1[Q:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjO1[O:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjN1[N:-3-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,DMS ; X-RAY DIFFRACTION 2.30Å
e6sjjM1[M:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjK1[K:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjJ1[J:-3-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjI1[I:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjG1[G:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjE1[E:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjC1[C:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjf1[f:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjje1[e:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,FLC ; X-RAY DIFFRACTION 2.30Å
e6sjjd1[d:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjjb1[b:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,FLC ; X-RAY DIFFRACTION 2.30Å
e6sjjT1[T:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6sjji1[i:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN,FLC,SO4 ; X-RAY DIFFRACTION 2.30Å
e6sjjh1[h:-2-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PR-10 protein ; ligands: 2AN ; X-RAY DIFFRACTION 2.30Å
e6v8hA1[A:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8hC1[C:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å
e6v8hG1[G:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8hJ1[J:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å
e6v8hL1[L:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8hM1[M:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8hN1[N:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8hO1[O:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; X-RAY DIFFRACTION 2.30Å
e6v8jA1[A:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: NA,SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8jB1[B:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: NA,SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8jC1[C:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: NA,SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8jD1[D:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: NA,SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8lA1[A:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8lB1[B:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8lC1[C:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: SO4 ; X-RAY DIFFRACTION 1.95Å
e6v8lD1[D:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: DCR ; X-RAY DIFFRACTION 1.95Å
e6v8mA1[A:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 1.75Å
e6v8mB1[B:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 1.75Å
e6v8sA1[A:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sB1[B:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sC1[C:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sD1[D:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sE1[E:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sF1[F:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sG1[G:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sH1[H:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN,SO4 ; X-RAY DIFFRACTION 2.10Å
e6v8sI1[I:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sJ1[J:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sK1[K:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sL1[L:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sM1[M:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sN1[N:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sO1[O:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6v8sP1[P:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH
Ara h 8 allergen isoform ; ligands: 2AN ; X-RAY DIFFRACTION 2.10Å
e6z82A1[A:38-196] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
S-norcoclaurine synthase ; ligands: QBW ; X-RAY DIFFRACTION 2.3Å
e6y3hA1[A:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen Cor a 1.0401 ; SOLUTION NMR
e6y3iA1[A:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen variant Cor a 1.0402 ; SOLUTION NMR
e6y3kA1[A:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen variant Cor a 1.0403 ; SOLUTION NMR
e6y3lA1[A:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen variant Cor a 1.0404 ; SOLUTION NMR
e6z98A1[A:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major allergen Pru p 1 ; SOLUTION NMR
e7mxlC1[C:2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major pollen allergen Bet v 1-A ; ELECTRON MICROSCOPY
e7n0uC1[C:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Recombinant Bet v 1 ; ligands: NAG ; X-RAY DIFFRACTION 2.99Å
e7n0vC1[C:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Major pollen allergen Bet v 1-A ; X-RAY DIFFRACTION 3.7Å
e7qb6A1[A:-4-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Nodulin-13 ; ligands: A8I ; X-RAY DIFFRACTION 2.52Å
e7qb6B1[B:-4-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Nodulin-13 ; ligands: MLI ; X-RAY DIFFRACTION 2.52Å
e8h3iA1[A:0-161] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
PR10 ; X-RAY DIFFRACTION 1.90Å
e8h3jA1[A:0-161] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
PR10 ; ligands: Q3V ; X-RAY DIFFRACTION 1.75Å
Previouse1vjhA1[A:1-120] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bet v I allergen family ; X-RAY DIFFRACTION 2.10Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers
a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers
a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers
a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain
a/b barrelsrepeating beta-alpha units form a barrel
a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers
mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions
few secondary structure elementsstabilized by cofactors or disulfides
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes