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
X: Thioesterase/thiol ester dehydrase-isomerase-like
H: Thioesterase/thiol ester dehydrase-isomerase
T: Thioesterase/thiol ester dehydrase-isomerase
F: 4HBT
Representatives:
e1vh5A1[A:0-137]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Hypothetical protein ydiI ; X-RAY DIFFRACTION 1.280Å
e1wluA1[A:2-117]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
phenylacetic acid degradation protein PaaI ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.45Å
e1q4uA1[A:11-150]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Thioesterase ; ligands: 4CA,EDO ; X-RAY DIFFRACTION 1.60Å
e1vpmA1[A:2-156]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
acyl-CoA hydrolase ; ligands: COA ; X-RAY DIFFRACTION 1.660Å
e1s5uA1[A:4-132]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
Protein ybgC ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 1.7Å
e1zkiA1[A:4-129]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
hypothetical protein PA5202 ; X-RAY DIFFRACTION 1.7Å
e2hboA1[A:12-153]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
Hypothetical protein (np_422103.1) ; ligands: EDO,PE4 ; X-RAY DIFFRACTION 1.850Å
e1yliA1[A:11-152]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
Putative acyl-CoA thioester hydrolase HI0827 ; ligands: CA,COA ; X-RAY DIFFRACTION 1.9Å
e2ov9A3[A:75-209]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
HYPOTHETICAL PROTEIN ; X-RAY DIFFRACTION 1.9Å
e1ixlA1[A:1-130]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
HYPOTHETICAL PROTEIN PH1136 ; X-RAY DIFFRACTION 1.94Å
e2fs2A1[A:1-131]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Phenylacetic acid degradation protein paaI ; ligands: SO4 ; X-RAY DIFFRACTION 2.000Å
e2f0xA1[A:3-138]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Thioesterase superfamily member 2 ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å
e2f41A1[A:73-183]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Transcription factor fapR ; X-RAY DIFFRACTION 2.50Å
e2gvhA1[A:9-143]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
AGR_L_2016p ; X-RAY DIFFRACTION 2.500Å
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.
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