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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

X: Carbon-nitrogen hydrolase-like
H: Metallo-dependent phosphatases
T: Metallo-dependent phosphatases
F: Metallophos_3

PF14582 CL0163

Representatives:

e2yvtA1[A:4-260] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN AQ_1956 ; X-RAY DIFFRACTION 1.6Å

e1uf3A1[A:1-228] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3G1[G:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3F1[F:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3H1[H:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3C1[C:4-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3E1[E:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3B1[B:3-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

e1uf3D1[D:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TT1561 ; ligands: CA ; X-RAY DIFFRACTION 2.1Å

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 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