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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

X: TIM beta/alpha-barrel
H: TIM barrels
T: TIM barrels
F: Ribul_P_3_epim

PF00834 CL0036

Representatives:

e1tqjA1[A:3-223] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e2fliG1[G:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e7osvA1[A:8-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DeNovoTIM6-SB ; ligands: ACT,PEG,SO4 ; X-RAY DIFFRACTION 1.66Å

e7ot8A1[A:4-185] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DeNovoTIM6-SB ; X-RAY DIFFRACTION 2.22Å

e2fliI1[I:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e7ot8B1[B:7-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DeNovoTIM6-SB ; ligands: SO4 ; X-RAY DIFFRACTION 2.22Å

e2fliB1[B:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e1tqjF1[F:3-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e2fliE1[E:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliF1[F:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliK1[K:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliL1[L:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliD1[D:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliH1[H:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e1tqjC1[C:3-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e2fliA1[A:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e1rpxC1[C:9-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (RIBULOSE-PHOSPHATE 3-EPIMERASE) ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å

e2fliJ1[J:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e2fliC1[C:3-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: DX5,ZN ; X-RAY DIFFRACTION 1.8Å

e1tqjB1[B:3-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e1tqjE1[E:3-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e1rpxB1[B:9-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (RIBULOSE-PHOSPHATE 3-EPIMERASE) ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å

e1rpxA1[A:9-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (RIBULOSE-PHOSPHATE 3-EPIMERASE) ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å

e1tqjD1[D:3-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; X-RAY DIFFRACTION 1.60Å

e1tqxB1[B:4-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE, PUTATIVE ; ligands: SO4,ZN ; X-RAY DIFFRACTION 2.0Å

e1h1yB1[B:5-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 1.870Å

e1h1zB1[B:5-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE ; ligands: SO4,ZN ; X-RAY DIFFRACTION 3.4Å

e1h1zA1[A:5-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE ; ligands: SO4,ZN ; X-RAY DIFFRACTION 3.4Å

e1h1yA1[A:5-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 1.870Å

e3inpA1[A:3-222] Image Pymol Jmol Links: PDB, SCOP, CATH

D-ribulose-phosphate 3-epimerase ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2.05Å

e3ctlA1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3ovpA1[A:4-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: FE2,XPE ; X-RAY DIFFRACTION 1.7Å

e3ct7A1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e3cu2A1[A:1-235] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-5-phosphate 3-epimerase ; ligands: CA,MRD,NI ; X-RAY DIFFRACTION 1.91Å

e3ctlB1[B:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3ctlC1[C:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3ctlD1[D:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3ctlE1[E:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3ctlF1[F:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,S6P ; X-RAY DIFFRACTION 2.2Å

e3cu2B1[B:1-236] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-5-phosphate 3-epimerase ; ligands: CA,MRD,NI ; X-RAY DIFFRACTION 1.91Å

e3ovpB1[B:4-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBULOSE-PHOSPHATE 3-EPIMERASE ; ligands: FE2,XPE ; X-RAY DIFFRACTION 1.7Å

e3ovqA1[A:4-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: 5RP,FE2,XPE ; X-RAY DIFFRACTION 1.8Å

e3ovqB1[B:5-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: 5RP,FE2,XPE ; X-RAY DIFFRACTION 1.8Å

e3ovrA1[A:4-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: 5SP,FE2,XPE ; X-RAY DIFFRACTION 1.76Å

e3ovrB1[B:4-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: 5SP,FE2,XPE ; X-RAY DIFFRACTION 1.76Å

e3qc3A1[A:0-224] Image Pymol Jmol Links: PDB, SCOP, CATH

D-ribulose-5-phosphate-3-epimerase ; ligands: FE,GOL,NI,ZN ; X-RAY DIFFRACTION 2.20Å

e3qc3B1[B:0-224] Image Pymol Jmol Links: PDB, SCOP, CATH

D-ribulose-5-phosphate-3-epimerase ; ligands: FE,GOL,NI,ZN ; X-RAY DIFFRACTION 2.20Å

e3ct7B1[B:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e3ct7C1[C:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e3ct7D1[D:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e3ct7E1[E:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e3ct7F1[F:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-ALLULOSE-6-PHOSPHATE 3-EPIMERASE ; ligands: MG,SO4 ; X-RAY DIFFRACTION 2.5Å

e4nu7C1[C:4-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: CL,SO4,ZN ; X-RAY DIFFRACTION 2.05Å

e4nu7A1[A:4-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: CL,SO4,ZN ; X-RAY DIFFRACTION 2.05Å

e4nu7B1[B:4-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: CL,SO4,ZN ; X-RAY DIFFRACTION 2.05Å

e4nu7D1[D:3-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribulose-phosphate 3-epimerase ; ligands: SO4,ZN ; X-RAY DIFFRACTION 2.05Å

e5umfA1[A:3-225] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: GOL,PO4,ZN ; X-RAY DIFFRACTION 1.400Å

e5umfB1[B:3-225] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: GOL,PO4,ZN ; X-RAY DIFFRACTION 1.400Å

e5umfC1[C:3-226] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: GOL,PO4,ZN ; X-RAY DIFFRACTION 1.400Å

e7u5yA1[A:-4-224] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e7u5yB1[B:0-223] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e7u5yC1[C:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e7u5yD1[D:-1-223] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e7u5yE1[E:-1-223] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e7u5yF1[F:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribulose-phosphate 3-epimerase ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e1tqxA1[A:4-224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

D-RIBULOSE-5-PHOSPHATE 3-EPIMERASE, PUTATIVE ; ligands: SO4,ZN ; X-RAY DIFFRACTION 2.0Å

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 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