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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative


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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

X: beta-Trefoil
H: beta-Trefoil
T: beta-Trefoil
F: Ricin_B_lectin

PF00652 CL0066

Representatives:

e1knmA1[A:2-130] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ENDO-1,4-BETA-XYLANASE A ; ligands: GOL,LAT ; X-RAY DIFFRACTION 1.2Å

e1dqgA1[A:2-135] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MANNOSE RECEPTOR ; ligands: SO4 ; X-RAY DIFFRACTION 1.7Å

e1vclA1[A:1-150] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

hemolytic lectin CEL-III ; ligands: BTB,CA,MG ; X-RAY DIFFRACTION 1.7Å

e1m2tB1[B:249-384] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mistletoe lectin I B chain ; ligands: GOL,NAG ; X-RAY DIFFRACTION 1.89Å

e1m2tB2[B:385-510] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mistletoe lectin I B chain ; ligands: GOL,NAG ; X-RAY DIFFRACTION 1.89Å

e2zqnA1[A:131-260] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

29-KDA GALACTOSE-BINDING LECTIN ; ligands: IMD,PO4 ; X-RAY DIFFRACTION 1.9Å

e1xhbA1[A:423-553] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 1 ; ligands: CA ; X-RAY DIFFRACTION 2.5Å

e1ggpB1[B:141-267] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN (LECTIN 1 B CHAIN) ; X-RAY DIFFRACTION 2.7Å

e4zfyB1[B:134-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

rRNA N-glycosidase ; X-RAY DIFFRACTION 2.420Å

e4zgrB1[B:134-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

rRNA N-glycosidase ; X-RAY DIFFRACTION 1.97Å

e4zlbB1[B:134-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

rRNA N-glycosidase ; X-RAY DIFFRACTION 2.550Å

e6egsB2[B:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 2.70Å

e6elyB1[B:1-137] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mistletoe Lectin I ; ligands: CL,GLY,GOL,NAG ; X-RAY DIFFRACTION 2.84Å

e6elyB2[B:138-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mistletoe Lectin I ; ligands: CL,GLY,GOL,NAG ; X-RAY DIFFRACTION 2.84Å

e5ndfE1[E:430-566] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 2.3Å

e5ndfA2[A:424-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; ligands: EDO,LU2 ; X-RAY DIFFRACTION 2.3Å

e5ndfB2[B:424-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; ligands: LU2 ; X-RAY DIFFRACTION 2.3Å

e5ndfC1[C:424-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 2.3Å

e5ndfD1[D:424-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 2.3Å

e5ndfF1[F:424-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; ligands: EDO ; X-RAY DIFFRACTION 2.3Å

e5nqaA2[A:440-578] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 4 ; ligands: EDO,NGA ; X-RAY DIFFRACTION 1.90Å

e5xtwC4[C:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtsA3[A:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 2.00Å

e5nqaB2[B:440-578] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 4 ; ligands: EDO,NGA ; X-RAY DIFFRACTION 1.90Å

e5xtwA3[A:23-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwB3[B:23-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwD4[D:23-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwE2[E:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwF1[F:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwG4[G:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e5xtwH4[H:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; ligands: MES ; X-RAY DIFFRACTION 3.2Å

e6egsA1[A:438-570] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 2.70Å

e5y42C2[C:1-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; ligands: NAG ; X-RAY DIFFRACTION 2.90Å

e5y97C2[C:1-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; ligands: LAT,NAG ; X-RAY DIFFRACTION 3.05Å

e5y42C1[C:135-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; X-RAY DIFFRACTION 2.90Å

e5y97C1[C:135-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; ligands: LAT ; X-RAY DIFFRACTION 3.05Å

e6h0bA1[A:440-578] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 4 ; X-RAY DIFFRACTION 1.8Å

e6h0bB1[B:440-578] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 4 ; ligands: EDO,NGA ; X-RAY DIFFRACTION 1.8Å

e6e4qB1[B:514-650] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

polypeptide N-acetylgalactosaminyltransferase 9 ; ligands: GOL ; X-RAY DIFFRACTION 2.800Å

e6e4qC1[C:514-650] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

polypeptide N-acetylgalactosaminyltransferase 9 ; X-RAY DIFFRACTION 2.800Å

e6e4qD1[D:514-650] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

polypeptide N-acetylgalactosaminyltransferase 9 ; ligands: EDO ; X-RAY DIFFRACTION 2.800Å

e6e4rA1[A:514-647] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

polypeptide N-acetylgalactosaminyltransferase 9 ; ligands: GOL ; X-RAY DIFFRACTION 2.060Å

e6e4rB2[B:514-647] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

polypeptide N-acetylgalactosaminyltransferase 9 ; ligands: EDO,GOL ; X-RAY DIFFRACTION 2.060Å

e5y42F2[F:1-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; X-RAY DIFFRACTION 2.90Å

e5y42F1[F:135-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Seed lectin ; X-RAY DIFFRACTION 2.90Å

e6iwqA2[A:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwqB1[B:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwqC2[C:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwqD1[D:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwqE1[E:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwqF2[F:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.95Å

e6iwrA2[A:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.604Å

e6iwrB2[B:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.604Å

e6iwrC1[C:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.604Å

e6iwrD2[D:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; ligands: UD2 ; X-RAY DIFFRACTION 2.604Å

e6iwrE2[E:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.604Å

e6iwrF1[F:528-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

N-acetylgalactosaminyltransferase 7 ; X-RAY DIFFRACTION 2.604Å

e6pxuB2[B:441-581] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 12 ; ligands: A2G,EDO,GOL ; X-RAY DIFFRACTION 2.007Å

e6inoA3[A:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.05Å

e6inoB3[B:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.05Å

e6inuA1[A:23-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 2.65Å

e6inuB3[B:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 2.65Å

e6invA2[A:24-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.30Å

e6ioeA1[A:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 2.9Å

e6ioeB1[B:22-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 2.9Å

e6innB3[B:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.00Å

e6innC3[C:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.00Å

e6innD3[D:22-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Macrophage mannose receptor 1 ; X-RAY DIFFRACTION 3.00Å

e6pxuA2[A:441-581] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 12 ; ligands: A2G ; X-RAY DIFFRACTION 2.007Å

e6s22A2[A:499-630] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase ; ligands: EDO,NGA ; X-RAY DIFFRACTION 1.96Å

e6s24A1[A:499-630] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase ; ligands: NGA,PO4 ; X-RAY DIFFRACTION 2.12Å

e6nqtA1[A:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e6e7iA2[A:438-568] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 1.8Å

e6nqtB2[B:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e6nqtC1[C:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e6nqtD2[D:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e6nqtE1[E:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e6nqtF1[F:438-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Polypeptide N-acetylgalactosaminyltransferase 2 ; X-RAY DIFFRACTION 3.05Å

e7kd0B2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; ligands: CL ; X-RAY DIFFRACTION 2.7680Å

e7kbiB2[B:137-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; X-RAY DIFFRACTION 3.049Å

e7kbkB2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin ; ligands: EDO ; X-RAY DIFFRACTION 2.090Å

e7kc9B2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; X-RAY DIFFRACTION 2.300Å

e7kc9E2[E:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; X-RAY DIFFRACTION 2.300Å

e7kd2B2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; ligands: CL,ZN ; X-RAY DIFFRACTION 2.5460Å

e7kdmB2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; X-RAY DIFFRACTION 2.300Å

e7kdmE2[E:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; X-RAY DIFFRACTION 2.300Å

e7kduB2[B:136-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ricin chain B ; ligands: EDO ; X-RAY DIFFRACTION 2.800Å

e7yl9H1[H:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9I1[I:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9J3[J:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9K2[K:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9L2[L:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9M3[M:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e7yl9N1[N:460-582] Image Pymol Jmol Links: PDB, SCOP, CATH

Hemolysin ; ELECTRON MICROSCOPY

e8jbqA2[A:456-578] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 2.0Å

Previous

e1hwmB2[B:136-266] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EBULIN ; X-RAY DIFFRACTION 2.8Å

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

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

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