Home Help

X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

Keyword search

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: EGF-like
H: EGF-related
T: EGF/Laminin
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.

Representatives:

e6maaA2[A:1-34] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WAP, Kazal, immunoglobulin, Kunitz and NTR domain-containing protein 2 ; ligands: NO3 ; X-RAY DIFFRACTION 1.39Å

e2i9aA2[A:10-49] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Urokinase-type plasminogen activator ; X-RAY DIFFRACTION 1.90Å

e2p28B2[B:467-513] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN BETA-2 ; X-RAY DIFFRACTION 2.2Å

e2p28B3[B:514-556] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTEGRIN BETA-2 ; X-RAY DIFFRACTION 2.2Å

e1dx5I1[I:345-387] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thrombomodulin ; ligands: FMT,NA ; X-RAY DIFFRACTION 2.290Å

e3gisZ1[Z:350-387] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thrombomodulin ; X-RAY DIFFRACTION 2.40Å

e3b4vD6[D:138-163] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

follistatin-like 3 ; ligands: NAG ; X-RAY DIFFRACTION 2.475Å

e1moxC1[C:2-50] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSFORMING GROWTH FACTOR ALPHA ; ligands: CD ; X-RAY DIFFRACTION 2.5Å

e3fl7A5[A:200-275] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EPHRIN RECEPTOR ; X-RAY DIFFRACTION 2.5Å

e3nsjA2[A:374-410] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERFORIN-1 ; ligands: GOL,IOD ; X-RAY DIFFRACTION 2.75Å

e3t5oA11[A:833-860] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

COMPLEMENT COMPONENT C6 ; X-RAY DIFFRACTION 2.87Å

e3t5oA9[A:750-764] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

COMPLEMENT COMPONENT C6 ; X-RAY DIFFRACTION 2.87Å

e2gy5A5[A:254-300] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ANGIOPOIETIN-1 RECEPTOR ; X-RAY DIFFRACTION 2.9Å

e5j67C2[C:985-1012] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Astrotactin-2 ; ligands: I3P,MAN ; X-RAY DIFFRACTION 3.16Å

e2p6aD4[D:137-162] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FOLLISTATIN ; X-RAY DIFFRACTION 3.4Å

e2p6aD6[D:213-240] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FOLLISTATIN ; X-RAY DIFFRACTION 3.4Å

e3mx0A4[A:200-290] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ephrin type-A receptor 2 ; X-RAY DIFFRACTION 3.500Å

e2juyA1[A:1-28] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Neopetrosiamide A ; SOLUTION NMR

e2k2sB1[B:7-61] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MICRONEMAL PROTEIN 6 ; SOLUTION NMR

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