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
X: Rossmann-like
H: Rossmann-related
T: FAD/NAD(P)-binding domain
F: Pyr_redox_2
Representatives:
e1mo9A2[A:2-192,A:314-383]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
ORF3 ; ligands: FAD,KPC ; X-RAY DIFFRACTION 1.65Å
e1fecA2[A:1-169,A:287-357]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
TRYPANOTHIONE REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION 1.7Å
e1fecA3[A:170-286]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
TRYPANOTHIONE REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION 1.7Å
e5jciA1[A:4-127,A:262-344]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Os09g0567300 protein ; ligands: FAD ; X-RAY DIFFRACTION 1.700Å
e5jciA2[A:128-261]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Os09g0567300 protein ; ligands: FAD ; X-RAY DIFFRACTION 1.700Å
e1m6iA2[A:128-263,A:401-477]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Programmed cell death protein 8 ; ligands: FAD ; X-RAY DIFFRACTION 1.8Å
e1m6iA3[A:264-400]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Programmed cell death protein 8 ; ligands: FAD ; X-RAY DIFFRACTION 1.8Å
e1fl2A1[A:212-325,A:452-521]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
ALKYL HYDROPEROXIDE REDUCTASE SUBUNIT F ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 1.9Å
e1fl2A2[A:326-451]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
ALKYL HYDROPEROXIDE REDUCTASE SUBUNIT F ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 1.9Å
e1q1rA2[A:2-114,A:248-319]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
PUTIDAREDOXIN REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION 1.91Å
e1q1rA3[A:115-247]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
PUTIDAREDOXIN REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION 1.91Å
e1d7yA2[A:5-115,A:237-308]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
FERREDOXIN REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION 2.1Å
e1xhcA2[A:1-103,A:226-289]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
NADH oxidase /nitrite reductase ; ligands: FAD ; X-RAY DIFFRACTION 2.15Å
e1xhcA3[A:104-225]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
NADH oxidase /nitrite reductase ; ligands: FAD ; X-RAY DIFFRACTION 2.15Å
e5jwaA1[A:39-152,A:311-359,A:431-467]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
NADH dehydrogenase, putative ; ligands: ACT,FAD,MG ; X-RAY DIFFRACTION 2.160Å
e5jwaA2[A:153-310]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
NADH dehydrogenase, putative ; ligands: ACT,FAD,MG ; X-RAY DIFFRACTION 2.160Å
e1ps9A2[A:466-627]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
2,4-dienoyl-CoA reductase ; ligands: FAD,MDE,NAP ; X-RAY DIFFRACTION 2.2Å
e1v59A2[A:1-160,A:283-355]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD,NAD,PO4 ; X-RAY DIFFRACTION 2.2Å
e1v59A3[A:161-282]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD,NAD ; X-RAY DIFFRACTION 2.2Å
e3ladA2[A:159-277]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD ; X-RAY DIFFRACTION 2.2Å
e3t2zA1[A:1-115,A:264-427]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Sulfide-quinone reductase, putative ; ligands: BU2,FAD,H2S,S3H,SO4 ; X-RAY DIFFRACTION 2.299Å
e1lvlA2[A:1-150,A:266-335]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD,NAD ; X-RAY DIFFRACTION 2.45Å
e1lvlA3[A:151-265]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD,NAD ; X-RAY DIFFRACTION 2.45Å
e4nwzD1[D:1-111,D:262-396]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
FAD-dependent pyridine nucleotide-disulfide oxidoreductase ; ligands: FAD ; X-RAY DIFFRACTION 2.5Å
e4nwzD2[D:112-261]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
FAD-dependent pyridine nucleotide-disulfide oxidoreductase ; ligands: FAD ; X-RAY DIFFRACTION 2.5Å
e1ebdA2[A:155-271]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DIHYDROLIPOAMIDE DEHYDROGENASE ; ligands: FAD ; X-RAY DIFFRACTION 2.6Å
e1ojtA2[A:117-275,A:401-470]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
SURFACE PROTEIN ; ligands: FAD ; X-RAY DIFFRACTION 2.75Å
e1ojtA3[A:276-400]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
SURFACE PROTEIN ; ligands: FAD ; X-RAY DIFFRACTION 2.75Å
e1xdiA2[A:2-161,A:276-348]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Rv3303c-lpdA ; ligands: FAD ; X-RAY DIFFRACTION 2.8Å
e4gavB2[B:181-340]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Rotenone-insensitive NADH-ubiquinone oxidoreductase ; ligands: FAD,UQ2 ; X-RAY DIFFRACTION 3.0Å
e1h6vA2[A:10-170,A:293-366]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
THIOREDOXIN REDUCTASE ; ligands: FAD,NDP ; X-RAY DIFFRACTION 3.000Å
e1fcdA2[A:1-114,A:256-327]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
FLAVOCYTOCHROME C SULFIDE DEHYDROGENASE (FLAVIN-BINDING SUBUNIT) ; ligands: FAD,HEM ; X-RAY DIFFRACTION
e1gesA2[A:3-146,A:263-335]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
GLUTATHIONE REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION
e1gesA3[A:147-262]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
GLUTATHIONE REDUCTASE ; ligands: FAD ; X-RAY DIFFRACTION
e1nhpA2[A:1-119,A:243-321]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
NADH PEROXIDASE ; ligands: FAD ; X-RAY DIFFRACTION
e1nhpA3[A:120-242]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
NADH PEROXIDASE ; ligands: FAD,SO4 ; X-RAY DIFFRACTION
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.
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