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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: Flavodoxin-like
H: Class I glutamine amidotransferase-like
T: L-fucose isomerase, N-terminal and second domains
F: Arabinose_Isome

PF02610

Representatives:

e2ajtA2[A:1-175] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-arabinose isomerase ; X-RAY DIFFRACTION 2.6Å

e2ajtB2[B:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-arabinose isomerase ; X-RAY DIFFRACTION 2.6Å

e2ajtC2[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-arabinose isomerase ; X-RAY DIFFRACTION 2.6Å

e4f2dA2[A:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.3Å

e4f2dB2[B:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.3Å

e4f2dC2[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.3Å

e2hxgA2[A:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.8Å

e2hxgB2[B:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.8Å

e2hxgC2[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.8Å

e4lqlA3[A:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4lqlB3[B:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4lqlC2[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4lqlD3[D:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4lqlE2[E:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4lqlF3[F:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-ARABINOSE ISOMERASE ; X-RAY DIFFRACTION 3.23Å

e4r1oA2[A:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1oB3[B:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1oC3[C:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1oD2[D:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1oE3[E:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1oF3[F:4-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.4Å

e4r1pA3[A:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1pB2[B:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1pC2[C:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1pD2[D:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1pE3[E:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1pF3[F:5-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.297Å

e4r1qA3[A:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e4r1qB3[B:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e4r1qC2[C:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e4r1qD3[D:1-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e4r1qE2[E:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e4r1qF2[F:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: SST ; X-RAY DIFFRACTION 2.248Å

e7cwvA1[A:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: GOL,MN ; X-RAY DIFFRACTION 3.530Å

e7cx7A1[A:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.49Å

e7cxoB1[B:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cyyA1[A:1-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD,RB0 ; X-RAY DIFFRACTION 2.5800Å

e7cwvB1[B:2-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvC1[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvD1[D:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvE1[E:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvF1[F:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvG1[G:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvH1[H:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvI1[I:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvJ1[J:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvK1[K:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cwvL1[L:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.530Å

e7cx7B1[B:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.49Å

e7cx7C1[C:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.49Å

e7cx7D1[D:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.49Å

e7cx7E1[E:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.49Å

e7cx7F1[F:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.49Å

e7cxoA1[A:3-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cxoC1[C:2-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cxoD1[D:3-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cxoE1[E:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cxoF1[F:2-174] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.20Å

e7cyyB1[B:1-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.5800Å

e7cyyC1[C:1-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MPD ; X-RAY DIFFRACTION 2.5800Å

e7cyyD1[D:2-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.5800Å

e7cyyE1[E:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 2.5800Å

e7cyyF1[F:3-176] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: RB0 ; X-RAY DIFFRACTION 2.5800Å

e7ch3A1[A:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3B1[B:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3C1[C:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3D1[D:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3E1[E:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3F1[F:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3G1[G:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3H1[H:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3I1[I:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3J1[J:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3K1[K:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; X-RAY DIFFRACTION 3.600Å

e7ch3L1[L:1-175] Image Pymol Jmol Links: PDB, SCOP, CATH

L-arabinose isomerase ; ligands: MN ; X-RAY DIFFRACTION 3.600Å

e7chlA1[A:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlB1[B:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlC1[C:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlD1[D:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlE1[E:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlF1[F:2-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlG1[G:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlH1[H:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlI1[I:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlJ1[J:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlK1[K:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e7chlL1[L:2-174] Image Pymol Jmol Links: PDB, SCOP, CATH

Hybrid Arabinose isomerase ; X-RAY DIFFRACTION 3.400Å

e2ajtA3[A:176-328] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-arabinose isomerase ; X-RAY DIFFRACTION 2.6Å

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