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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

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

X: Rubredoxin-like

binds one zinc with two CxxC motifs on two beta-hairpins

X: RING/U-box-like

binds two zincs. one in the same way as rubredoxin, probably related to rubredoxin. the other in a similar way as glucocorticoid receptor

X: Glucocorticoid receptor-like

binds zinc with one beta-hairpin and one helix, the helix binds DNA

X: Snake toxin-like
H: Snake toxin-like
T: Snake toxin-like
F: UPAR_LY6

PF00021 CL0117

Representatives:

e2j8bA1[A:1-77] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 1.10Å

e7bprA2[A:52-126] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Testis-expressed protein 101 ; ligands: PT ; X-RAY DIFFRACTION 1.950Å

e7bprB2[B:52-124] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Testis-expressed protein 101 ; ligands: PT ; X-RAY DIFFRACTION 1.950Å

e7bpsA2[A:51-124] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Testis-expressed protein 101 ; ligands: SO4 ; X-RAY DIFFRACTION 2.350Å

e7bpsB2[B:51-124] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Testis-expressed protein 101 ; X-RAY DIFFRACTION 2.350Å

e2ux2A1[A:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 1.8Å

e2ux2B1[B:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 1.8Å

e2uwrA1[A:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 1.34Å

e1ergA1[A:1-70] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 ; SOLUTION NMR

e1cdsA1[A:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 ; SOLUTION NMR

e1cdrA1[A:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 ; SOLUTION NMR

e1cdqA1[A:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 ; SOLUTION NMR

e2ux2C1[C:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 1.8Å

e2i9bG1[G:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; X-RAY DIFFRACTION 2.8Å

e1ywhM1[M:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e1ywhO1[O:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e3bt1U1[U:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG ; X-RAY DIFFRACTION 2.800Å

e1ywhE1[E:1-79] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e2i9bH1[H:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; X-RAY DIFFRACTION 2.8Å

e2i9bE1[E:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: SO4 ; X-RAY DIFFRACTION 2.8Å

e1ywhC1[C:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e2i9bF1[F:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: SO4 ; X-RAY DIFFRACTION 2.8Å

e1ywhI1[I:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e1ywhK1[K:1-78] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e1ywhA1[A:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e1ywhG1[G:1-79] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.7Å

e3bt2U1[U:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 2.5Å

e2ofsA1[A:0-74] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; X-RAY DIFFRACTION 2.12Å

e1erhA1[A:1-70] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 ; SOLUTION NMR

e4bikB1[B:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 3.49Å

e4bikD1[D:0-76] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 GLYCOPROTEIN ; X-RAY DIFFRACTION 3.49Å

e3u73U7[U:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 3.19Å

e3u74U4[U:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 2.39Å

e4k24U4[U:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase plasminogen activator surface receptor ; ligands: NAG ; X-RAY DIFFRACTION 4.500Å

e3laqV7[V:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 3.2Å

e3laqU7[U:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 3.2Å

e4qtiU2[U:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 3.00Å

e5imtD1[D:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ligands: SO4,ZN ; X-RAY DIFFRACTION 2.7Å

e5imyC1[C:0-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; X-RAY DIFFRACTION 2.4Å

e5imyD1[D:0-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; X-RAY DIFFRACTION 2.4Å

e6zd0B1[B:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e6zd0D1[D:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e6zd0F1[F:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e7v63B2[B:0-81] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Urokinase plasminogen activator surface receptor ; ligands: NAG ; X-RAY DIFFRACTION 2.900Å

e7v63A2[A:1-79] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Urokinase plasminogen activator surface receptor ; ligands: NAG ; X-RAY DIFFRACTION 2.900Å

e8b0fG1[G:1-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e8b0gG1[G:0-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e8b0hG1[G:0-77] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CD59 glycoprotein ; ELECTRON MICROSCOPY

e2muoA1[A:100-181] Image Pymol Jmol Links: PDB, SCOP, CATH

e2mupA1[A:100-181] Image Pymol Jmol Links: PDB, SCOP, CATH

e2n99A1[A:100-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ly-6/neurotoxin-like protein 1 ; SOLUTION NMR

e6e7kD1[D:62-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.8Å

e6oauC1[C:63-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.480Å

e6oauD1[D:63-144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.480Å

e6oazE1[E:61-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; ligands: CA ; X-RAY DIFFRACTION 3.040Å

e6oazF1[F:65-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; ligands: CA ; X-RAY DIFFRACTION 3.040Å

e6oazG1[G:63-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; ligands: CA ; X-RAY DIFFRACTION 3.040Å

e6oazH1[H:63-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; ligands: CA ; X-RAY DIFFRACTION 3.040Å

e6ob0E1[E:61-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.81Å

e6ob0F1[F:63-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.81Å

e6ob0G1[G:63-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.81Å

e6ob0H1[H:63-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 ; X-RAY DIFFRACTION 2.81Å

e6zzeA1[A:100-181] Image Pymol Jmol Links: PDB, SCOP, CATH

e6zzfA1[A:100-181] Image Pymol Jmol Links: PDB, SCOP, CATH

e2fd6U1[U:1-80] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: NAG ; X-RAY DIFFRACTION 1.9Å

e2fd6U2[U:189-275] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UROKINASE PLASMINOGEN ACTIVATOR SURFACE RECEPTOR ; ligands: ETX,NDG,PG4,PGE ; X-RAY DIFFRACTION 1.9Å

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.

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes