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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

X: Tautomerase/MIF-like
H: Tautomerase/MIF
T: Tautomerase/MIF
F: Tautomerase

PF01361 CL0082

Representatives:

Domain assembly:

e1gyxA1[A:1-76] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HYPOTHETICAL PROTEIN YDCE , X-RAY DIFFRACTION 1.350Å

e1gyxB1[B:1-76] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HYPOTHETICAL PROTEIN YDCE , X-RAY DIFFRACTION 1.350Å

Domain assembly:

e1gyxB1[B:1-76] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HYPOTHETICAL PROTEIN YDCE , X-RAY DIFFRACTION 1.350Å

e1gyxA1[A:1-76] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HYPOTHETICAL PROTEIN YDCE , X-RAY DIFFRACTION 1.350Å

Domain assembly:

e1s0yA1[A:2-63] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase , X-RAY DIFFRACTION 2.26Å

e1s0yD1[D:2-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase , X-RAY DIFFRACTION 2.26Å

e4otaI1[I:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otbE1[E:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e1otfB1[B:2-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION

e4otbL1[L:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e1bjpC1[C:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: OXP ; X-RAY DIFFRACTION 2.4Å

e4otaR1[R:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otbC1[C:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e1otfE1[E:2-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION

e4otbD1[D:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otbB1[B:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otbH1[H:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otbG1[G:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otbJ1[J:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e1otfF1[F:2-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION

e4otbI1[I:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otbK1[K:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e4otaN1[N:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e1otfC1[C:2-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION

e4otbF1[F:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

e1s0yC1[C:2-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yI1[I:2-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yG1[G:2-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yK1[K:2-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yE1[E:2-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e3mb2A1[A:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e2x4kA1[A:0-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: ACT,PO4,ZN ; X-RAY DIFFRACTION 1.1Å

e3m21A1[A:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3m20A1[A:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-oxalocrotonate tautomerase, putative ; X-RAY DIFFRACTION 2.29Å

e3abfA1[A:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3n4dA1[A:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3ry0A1[A:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative tautomerase ; X-RAY DIFFRACTION 1.4Å

e2fm7A1[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; X-RAY DIFFRACTION 2.80Å

e2op8A1[A:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable tautomerase ywhB ; X-RAY DIFFRACTION 2.500Å

e2ormA1[A:1-67] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e3ej3A1[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e1s0yB1[B:2-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yF1[F:2-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yH1[H:2-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yJ1[J:2-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e1s0yL1[L:2-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: MLA ; X-RAY DIFFRACTION 2.26Å

e2fm7B1[B:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; X-RAY DIFFRACTION 2.80Å

e2fm7C1[C:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; ligands: CL ; X-RAY DIFFRACTION 2.80Å

e2fm7D1[D:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; ligands: CL ; X-RAY DIFFRACTION 2.80Å

e2fm7E1[E:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; X-RAY DIFFRACTION 2.80Å

e2fm7F1[F:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-Oxalocrotonate Tautomerase ; X-RAY DIFFRACTION 2.80Å

e2op8B1[B:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable tautomerase ywhB ; X-RAY DIFFRACTION 2.500Å

e2opaA1[A:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable tautomerase ywhB ; ligands: FHC ; X-RAY DIFFRACTION 2.40Å

e2opaB1[B:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable tautomerase ywhB ; ligands: FHC ; X-RAY DIFFRACTION 2.40Å

e2ormB1[B:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e2ormC1[C:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e2ormD1[D:1-67] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e2ormE1[E:1-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e2ormF1[F:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROBABLE TAUTOMERASE HP0924 ; X-RAY DIFFRACTION 2.1Å

e3ej3C1[C:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3E1[E:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3G1[G:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3I1[I:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3K1[K:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALPHA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3D1[D:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3F1[F:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3H1[H:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3J1[J:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej3L1[L:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-SUBUNIT OF TRANS-3-CHLOROACRYLIC ACID DEHALOGENASE ; ligands: ACT,PO4 ; X-RAY DIFFRACTION 1.7Å

e3ej7A1[A:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; ligands: SO4 ; X-RAY DIFFRACTION 1.9Å

e3ej7C1[C:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7E1[E:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7G1[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7I1[I:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7K1[K:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7B1[B:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7D1[D:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7F1[F:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7H1[H:1-54] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7J1[J:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej7L1[L:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.9Å

e3ej9A1[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3ej9C1[C:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3ej9E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alpha-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3ej9B1[B:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3ej9D1[D:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3ej9F1[F:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Beta-subunit of trans-3-chloroacrylic acid dehalogenase ; X-RAY DIFFRACTION 1.5Å

e3mb2C1[C:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e3mb2E1[E:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e3mb2G1[G:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e3mb2I1[I:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e3mb2K1[K:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE FAMILY ENZYME - ALPHA SUBUNIT ; ligands: SO4 ; X-RAY DIFFRACTION 2.41Å

e2x4kB1[B:0-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: ACT,PO4,ZN ; X-RAY DIFFRACTION 1.1Å

e3m20B1[B:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-oxalocrotonate tautomerase, putative ; X-RAY DIFFRACTION 2.29Å

e3m20C1[C:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-oxalocrotonate tautomerase, putative ; X-RAY DIFFRACTION 2.29Å

e3m21B1[B:1-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3m21C1[C:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3m21D1[D:1-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3m21E1[E:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3m21F1[F:1-67] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable tautomerase HP_0924 ; X-RAY DIFFRACTION 1.850Å

e3abfB1[B:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3abfC1[C:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3abfD1[D:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3abfE1[E:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3abfF1[F:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH

4-oxalocrotonate tautomerase ; ligands: SO4 ; X-RAY DIFFRACTION 1.940Å

e3n4dB1[B:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dC1[C:1-146] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dD1[D:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dE1[E:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dF1[F:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dG1[G:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dH1[H:1-140] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4dI1[I:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3n4gA1[A:1-146] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.430Å

e3n4gB1[B:1-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.430Å

e3n4gC1[C:1-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.430Å

e3n4hA1[A:1-118] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative tautomerase ; X-RAY DIFFRACTION 2.02Å

e3ry0B1[B:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative tautomerase ; X-RAY DIFFRACTION 1.4Å

e4fazA1[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE ISOMERASE PROTEIN ; ligands: SO4 ; X-RAY DIFFRACTION 1.57Å

e4fazC1[C:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE ISOMERASE PROTEIN ; X-RAY DIFFRACTION 1.57Å

e4fazB1[B:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE ISOMERASE PROTEIN ; X-RAY DIFFRACTION 1.57Å

e4fdxA1[A:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-oxalocrotonase tautomerase isozyme ; X-RAY DIFFRACTION 1.64Å

e4fdxB1[B:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-oxalocrotonase tautomerase isozyme ; X-RAY DIFFRACTION 1.64Å

e4otaL2[L:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaE2[E:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaG2[G:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaH2[H:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaD2[D:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaK2[K:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otcF2[F:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otaJ2[J:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otcH2[H:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otaQ2[Q:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otcA2[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otaB2[B:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e1bjpA2[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: OXP ; X-RAY DIFFRACTION 2.4Å

e4otaC2[C:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otcB2[B:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e1bjpD2[D:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: OXP ; X-RAY DIFFRACTION 2.4Å

e4otcE2[E:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otcI2[I:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otcG2[G:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otcC2[C:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otaM2[M:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaP2[P:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otaF2[F:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e1bjpB2[B:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: OXP ; X-RAY DIFFRACTION 2.4Å

e4otaO2[O:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e4otcD2[D:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.28Å

e4otaA2[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.75Å

e1bjpE2[E:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; ligands: OXP ; X-RAY DIFFRACTION 2.4Å

e4x19L1[L:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19A1[A:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19B1[B:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19C1[C:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19D1[D:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19E1[E:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19F1[F:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; ligands: NCO ; X-RAY DIFFRACTION 1.9Å

e4x19G1[G:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19H1[H:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19I1[I:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19J1[J:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19K1[K:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19M1[M:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19N1[N:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19O1[O:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19P1[P:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19Q1[Q:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19R1[R:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19S1[S:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19T1[T:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19U1[U:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19V1[V:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19W1[W:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19X1[X:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19Y1[Y:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19Z1[Z:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19a1[a:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19b1[b:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19c1[c:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x19d1[d:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.9Å

e4x1cA1[A:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cB1[B:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; ligands: NCO ; X-RAY DIFFRACTION 1.7Å

e4x1cD1[D:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cE1[E:1-59] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cF1[F:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; ligands: NCO ; X-RAY DIFFRACTION 1.7Å

e4x1cI1[I:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cJ1[J:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cM1[M:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cN1[N:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cO1[O:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cC1[C:1-58] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cG1[G:1-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cH1[H:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cK1[K:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e4x1cL1[L:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 1.7Å

e5clnA1[A:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnB1[B:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnC1[C:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnD1[D:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnE1[E:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnF1[F:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnG1[G:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnH1[H:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnI1[I:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

e5clnJ1[J:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-hydroxymuconate tautomerase ; X-RAY DIFFRACTION 2.71Å

Next

Domain assembly:

e1s0yD1[D:2-57] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase , X-RAY DIFFRACTION 2.26Å

e1s0yA1[A:2-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

beta-subunit of trans-3-chloroacrylic acid dehalogenase , X-RAY DIFFRACTION 2.26Å

e4otbA1[A:1-59] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE ; X-RAY DIFFRACTION 2.5Å

Domain assembly:

e1otfA1[A:2-60] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE , X-RAY DIFFRACTION

e1otfD1[D:3-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE , X-RAY DIFFRACTION

Domain assembly:

e1otfD1[D:3-61] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE , X-RAY DIFFRACTION

e1otfA1[A:2-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-OXALOCROTONATE TAUTOMERASE , X-RAY DIFFRACTION

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

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

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