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

X: jelly-roll
H: Double-stranded beta-helix
T: Double-stranded beta-helix
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:

e1juhA2[A:220-350] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

quercetin 2,3-dioxygenase ; ligands: EDO,NAG ; X-RAY DIFFRACTION 1.5Å

e1juhA3[A:3-219] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

quercetin 2,3-dioxygenase ; ligands: CU,EDO,NAG ; X-RAY DIFFRACTION 1.5Å

e3d0jA1[A:0-137] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

UNCHARACTERIZED PROTEIN CA_C3497 ; ligands: FMT,GOL ; X-RAY DIFFRACTION 1.53Å

e2qnkA2[A:177-286] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

3-hydroxyanthranilate 3,4-dioxygenase ; X-RAY DIFFRACTION 1.600Å

e3o14A4[A:116-221] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Anti-ECFsigma factor, ChrR ; ligands: EDO ; X-RAY DIFFRACTION 1.70Å

e3g7dA1[A:1-228] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHPD ; ligands: CD ; X-RAY DIFFRACTION 1.8Å

e5m21A1[A:3-168] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Hydroquinone dioxygenase small subunit ; X-RAY DIFFRACTION 1.990Å

e2bgcA1[A:7-137] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PRFA ; ligands: DTU ; X-RAY DIFFRACTION 2.3Å

e6euoC1[C:13-371] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-lysine 4-hydroxylase ; ligands: FE,GOL,MLT,SO4 ; X-RAY DIFFRACTION 2.3Å

e6b9sH1[H:71-239] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Methylphosphonate synthase ; X-RAY DIFFRACTION 2.37Å

e6b9sH3[H:307-439] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Methylphosphonate synthase ; X-RAY DIFFRACTION 2.37Å

e2d40A2[A:218-342] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

putative gentisate 1,2-dioxygenase ; X-RAY DIFFRACTION 2.4Å

e4zxaA1[A:2-164] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Hydroquinone dioxygenase small subunit ; X-RAY DIFFRACTION 2.488Å

e4zxaW2[W:171-339] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Hydroquinone dioxygenase large subunit ; ligands: CD,H8N ; X-RAY DIFFRACTION 2.488Å

e3fe5A2[A:177-284] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3-hydroxyanthranilate 3,4-dioxygenase ; X-RAY DIFFRACTION 2.51Å

e1ft9A1[A:2-133] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CARBON MONOXIDE OXIDATION SYSTEM TRANSCRIPTION REGULATOR ; ligands: HEM ; X-RAY DIFFRACTION 2.6Å

e3nnjB1[B:-11-39,B:67-318] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CurA ; X-RAY DIFFRACTION 2.600Å

e6o2kB1[B:1270-1411] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Centromeric protein-C, isoform A ; X-RAY DIFFRACTION 2.63Å

e5me9A1[A:12-298] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division cycle protein CDT1 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.7Å

e5me9B1[B:12-157,B:185-298] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division cycle protein CDT1 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.7Å

e5nlaA2[A:47-250] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative transcriptional regulator TRANSCRIPTION REGULATOR protein ; X-RAY DIFFRACTION 2.70Å

e3esgA3[A:117-186] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FMT

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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

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