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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

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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: Formate dehydrogenase/DMSO reductase, domains 2 and 3
T: Formate dehydrogenase/DMSO reductase, domains 2 and 3
F: Molybdopterin

PF00384

Representatives:

e1eu1A4[A:147-366] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DIMETHYL SULFOXIDE REDUCTASE ; ligands: 6MO,EPE,MGD,O,SO4 ; X-RAY DIFFRACTION 1.3Å

e1eu1A5[A:54-146,A:367-625] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DIMETHYL SULFOXIDE REDUCTASE ; ligands: 6MO,CD,EPE,GLC,MGD,O,SO4 ; X-RAY DIFFRACTION 1.3Å

e1kqfA4[A:106-195,A:447-850] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMATE DEHYDROGENASE, NITRATE-INDUCIBLE, MAJOR SUBUNIT ; ligands: MGD ; X-RAY DIFFRACTION 1.60Å

e1kqfA5[A:196-446] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMATE DEHYDROGENASE, NITRATE-INDUCIBLE, MAJOR SUBUNIT ; ligands: 6MO,MGD,SF4 ; X-RAY DIFFRACTION 1.60Å

e1g8kA3[A:119-201,A:423-682] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: 4MO,CA,EDO,MGD,O ; X-RAY DIFFRACTION 1.64Å

e1g8kA4[A:202-422] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: 4MO,EDO,F3S,HG,MGD,O ; X-RAY DIFFRACTION 1.64Å

e1y5iA4[A:106-220,A:582-1074] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Respiratory nitrate reductase 1 alpha chain ; ligands: MD1 ; X-RAY DIFFRACTION 1.9Å

e1y5iA5[A:221-581] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Respiratory nitrate reductase 1 alpha chain ; ligands: 6MO,MD1,SF4 ; X-RAY DIFFRACTION 1.9Å

e4v4eM3[M:74-172,M:396-728] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eM4[M:173-395] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4cI1[I:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cM1[M:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cO3[O:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cQ1[Q:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4dA1[A:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dC1[C:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dG1[G:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dI1[I:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dM2[M:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dO3[O:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4eA4[A:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eG2[G:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eI4[I:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4cC4[C:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cK4[K:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cS4[S:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cU4[U:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4cW4[W:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,ACT,CA,MGD ; X-RAY DIFFRACTION 2.35Å

e4v4dK4[K:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dQ4[Q:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dS4[S:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dU4[U:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4dW4[W:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,CA,MGD,PYG ; X-RAY DIFFRACTION 2.20Å

e4v4eC4[C:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eK4[K:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eO4[O:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eQ4[Q:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eS4[S:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eU4[U:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e4v4eW4[W:173-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pyrogallol hydroxytransferase large subunit ; ligands: 4MO,BTT,CA,MGD ; X-RAY DIFFRACTION 2.00Å

e2jioA4[A:140-345] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC NITRATE REDUCTASE ; ligands: MGD,MO,SF4,UNX ; X-RAY DIFFRACTION 2.2Å

e2jioA5[A:63-139,A:346-600] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC NITRATE REDUCTASE ; ligands: MGD,UNX ; X-RAY DIFFRACTION 2.2Å

e1ogyA4[A:153-383] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC NITRATE REDUCTASE ; ligands: MGD,MO,SF4 ; X-RAY DIFFRACTION 3.200Å

e1ogyA5[A:68-152,A:384-681] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC NITRATE REDUCTASE ; ligands: MGD,MO ; X-RAY DIFFRACTION 3.200Å

e2fug37[3:305-374,3:537-685] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NADH-quinone oxidoreductase chain 3 ; X-RAY DIFFRACTION 3.300Å

e2iv2X4[X:140-334] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formate dehydrogenase H ; ligands: 2MD,MGD,SF4,UNX ; X-RAY DIFFRACTION

e2iv2X5[X:58-139,X:335-564] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formate dehydrogenase H ; ligands: 2MD,MGD,UNX ; X-RAY DIFFRACTION

e5lnk36[3:348-495] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial complex I, 75 kDa subunit ; ELECTRON MICROSCOPY

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