Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices



members vary in structures

Representatives:
e1vpdA1[A:164-296]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
TARTRONATE SEMIALDEHYDE REDUCTASE ; ligands: CL,TLA ; X-RAY DIFFRACTION 1.65Å
e3ckyA3[A:166-300] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2-hydroxymethyl glutarate dehydrogenase ; X-RAY DIFFRACTION 2.300Å
e3ckyB3[B:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2-hydroxymethyl glutarate dehydrogenase ; X-RAY DIFFRACTION 2.300Å
e3ckyC1[C:166-300] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2-hydroxymethyl glutarate dehydrogenase ; X-RAY DIFFRACTION 2.300Å
e3ckyD3[D:166-300] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2-hydroxymethyl glutarate dehydrogenase ; X-RAY DIFFRACTION 2.300Å
e4dllA2[A:191-316] Image Pymol Jmol Links: PDB, SCOP, CATH
2-HYDROXY-3-OXOPROPIONATE REDUCTASE ; X-RAY DIFFRACTION 2.11Å
e4dllB2[B:191-318] Image Pymol Jmol Links: PDB, SCOP, CATH
2-HYDROXY-3-OXOPROPIONATE REDUCTASE ; X-RAY DIFFRACTION 2.11Å
e3dojA2[A:162-288] Image Pymol Jmol Links: PDB, SCOP, CATH
Dehydrogenase-like protein ; X-RAY DIFFRACTION 2.100Å
e3g0oA2[A:169-292] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; ligands: TLA ; X-RAY DIFFRACTION 1.80Å
e4gbjA2[A:162-293] Image Pymol Jmol Links: PDB, SCOP, CATH
6-PHOSPHOGLUCONATE DEHYDROGENASE NAD-BINDING ; X-RAY DIFFRACTION 2.05Å
e4gbjB3[B:162-293] Image Pymol Jmol Links: PDB, SCOP, CATH
6-PHOSPHOGLUCONATE DEHYDROGENASE NAD-BINDING ; X-RAY DIFFRACTION 2.05Å
e4gbjC1[C:162-294] Image Pymol Jmol Links: PDB, SCOP, CATH
6-PHOSPHOGLUCONATE DEHYDROGENASE NAD-BINDING ; X-RAY DIFFRACTION 2.05Å
e4gbjD1[D:162-293] Image Pymol Jmol Links: PDB, SCOP, CATH
6-PHOSPHOGLUCONATE DEHYDROGENASE NAD-BINDING ; X-RAY DIFFRACTION 2.05Å
e2gf2A1[A:201-335] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; X-RAY DIFFRACTION 2.38Å
e2gf2B1[B:201-332] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; X-RAY DIFFRACTION 2.38Å
e2gf2C3[C:201-331] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; X-RAY DIFFRACTION 2.38Å
e2gf2D1[D:201-333] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; X-RAY DIFFRACTION 2.38Å
e2i9pA2[A:201-332] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; ligands: NAD ; X-RAY DIFFRACTION 2.55Å
e2i9pB3[B:201-335] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; ligands: NAD ; X-RAY DIFFRACTION 2.55Å
e2i9pC1[C:201-332] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; ligands: NAD ; X-RAY DIFFRACTION 2.55Å
e2i9pD3[D:201-332] Image Pymol Jmol Links: PDB, SCOP, CATH
3-hydroxyisobutyrate dehydrogenase ; ligands: NAD ; X-RAY DIFFRACTION 2.55Å
e3pduA3[A:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduB3[B:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduC1[C:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduD1[D:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduE1[E:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduF1[F:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduG3[G:163-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: GOL,NAP ; X-RAY DIFFRACTION 1.89Å
e3pduH3[H:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase family protein ; ligands: NAP ; X-RAY DIFFRACTION 1.89Å
e3pefA1[A:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: EDO,GOL,NAP,PEG ; X-RAY DIFFRACTION 2.07Å
e3pefB1[B:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: NAP ; X-RAY DIFFRACTION 2.07Å
e3pefC1[C:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: GOL,NAP ; X-RAY DIFFRACTION 2.07Å
e3pefD3[D:163-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: NAP,PEG ; X-RAY DIFFRACTION 2.07Å
e3pefE1[E:163-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: GOL,NAP,PEG ; X-RAY DIFFRACTION 2.07Å
e3pefF3[F:163-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: NAP ; X-RAY DIFFRACTION 2.07Å
e3pefG1[G:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: NAP,PEG ; X-RAY DIFFRACTION 2.07Å
e3pefH3[H:163-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding ; ligands: NAP,PEG ; X-RAY DIFFRACTION 2.07Å
e3q3cA1[A:163-296] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROBABLE 3-HYDROXYISOBUTYRATE DEHYDROGENASE ; ligands: NAD ; X-RAY DIFFRACTION 2.3Å
e3qhaA2[A:169-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Putative oxidoreductase ; X-RAY DIFFRACTION 2.250Å
e3qhaB2[B:169-288] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Putative oxidoreductase ; X-RAY DIFFRACTION 2.250Å
e2uyyA3[A:429-553] Image Pymol Jmol Links: PDB, SCOP, CATH
N-PAC PROTEIN ; ligands: NA7 ; X-RAY DIFFRACTION 2.500Å
e2uyyB1[B:429-553] Image Pymol Jmol Links: PDB, SCOP, CATH
N-PAC PROTEIN ; X-RAY DIFFRACTION 2.500Å
e2uyyC3[C:429-553] Image Pymol Jmol Links: PDB, SCOP, CATH
N-PAC PROTEIN ; X-RAY DIFFRACTION 2.500Å
e2uyyD3[D:429-553] Image Pymol Jmol Links: PDB, SCOP, CATH
N-PAC PROTEIN ; ligands: NA7 ; X-RAY DIFFRACTION 2.500Å
e3w6uA1[A:162-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding protein ; ligands: NAP ; X-RAY DIFFRACTION 2.00Å
e3w6zA1[A:162-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding protein ; ligands: NAP ; X-RAY DIFFRACTION 1.44Å
e3ws7A1[A:162-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
6-phosphogluconate dehydrogenase, NAD-binding protein ; ligands: ACY,NAP,SO4 ; X-RAY DIFFRACTION 1.18Å
e1yb4A3[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TARTRONIC SEMIALDEHYDE REDUCTASE ; X-RAY DIFFRACTION 2.4Å
e1yb4B3[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TARTRONIC SEMIALDEHYDE REDUCTASE ; X-RAY DIFFRACTION 2.4Å
e5je8A1[A:163-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase ; ligands: EPE,NAD ; X-RAY DIFFRACTION 2.10Å
e5je8B2[B:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase ; ligands: EPE,GOL,NAD ; X-RAY DIFFRACTION 2.10Å
e5je8C2[C:163-290] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase ; ligands: NAD ; X-RAY DIFFRACTION 2.10Å
e5je8D2[D:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-hydroxyisobutyrate dehydrogenase ; ligands: GOL,NAD ; X-RAY DIFFRACTION 2.10Å
e6sm7B2[B:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: BO3 ; X-RAY DIFFRACTION 1.880Å
e6sm7A2[A:163-295] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: BO3 ; X-RAY DIFFRACTION 1.880Å
e6sm7D2[D:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: BO3 ; X-RAY DIFFRACTION 1.880Å
e6sm7C2[C:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: BO3 ; X-RAY DIFFRACTION 1.880Å
e6smyA1[A:163-295] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: LLQ ; X-RAY DIFFRACTION 2.450Å
e6smyB2[B:163-294] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: LLQ ; X-RAY DIFFRACTION 2.450Å
e6smyC2[C:163-295] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: LLQ,NAD ; X-RAY DIFFRACTION 2.450Å
e6smyD1[D:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: LLQ,NAD ; X-RAY DIFFRACTION 2.450Å
e6smzA2[A:163-295] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: NAD ; X-RAY DIFFRACTION 1.750Å
e6smzC2[C:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; X-RAY DIFFRACTION 1.750Å
e6smzB1[B:163-295] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: NAD ; X-RAY DIFFRACTION 1.750Å
e6smzD2[D:163-296] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
3-sulfolactaldehyde reductase ; ligands: NAD ; X-RAY DIFFRACTION 1.750Å

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes