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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: Ribosomal protein S2/SIS domain
T: Ribosomal protein S2/SIS domain
F: SIS_2

PF13580 CL0067

Representatives:

e1tk9A1[A:1-188] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase 1 ; X-RAY DIFFRACTION 2.1Å

e1x92A1[A:2-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P ; X-RAY DIFFRACTION 2.3Å

e1x94B1[B:1-190] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

putative Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.5Å

e1x94A1[A:1-190] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

putative Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.5Å

e1tk9D1[D:1-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase 1 ; X-RAY DIFFRACTION 2.1Å

e1tk9B1[B:1-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase 1 ; X-RAY DIFFRACTION 2.1Å

e3bjzD1[D:2-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: CL,SO4 ; X-RAY DIFFRACTION 2.4Å

e1tk9C1[C:1-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase 1 ; X-RAY DIFFRACTION 2.1Å

e3bjzB1[B:2-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.4Å

e3bjzC1[C:2-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.4Å

e3bjzA1[A:2-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: SO4 ; X-RAY DIFFRACTION 2.4Å

e1x92B1[B:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P ; X-RAY DIFFRACTION 2.3Å

e2x3yA1[A:-6-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e3trjA1[A:1-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.700Å

e2i22A1[A:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; X-RAY DIFFRACTION 2.8Å

e3cvjA1[A:0-242] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative phosphoheptose isomerase ; ligands: ACT,EDO,MG ; X-RAY DIFFRACTION 2.00Å

e2i22B1[B:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: I22 ; X-RAY DIFFRACTION 2.8Å

e2i22C1[C:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: I22 ; X-RAY DIFFRACTION 2.8Å

e2i22D1[D:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; X-RAY DIFFRACTION 2.8Å

e2i2wA1[A:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; X-RAY DIFFRACTION 1.95Å

e2i2wB1[B:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; X-RAY DIFFRACTION 1.95Å

e2i2wC1[C:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; X-RAY DIFFRACTION 1.95Å

e2i2wD1[D:1-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: GOL ; X-RAY DIFFRACTION 1.95Å

e2yvaA1[A:1-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNAA INITIATOR-ASSOCIATING PROTEIN DIAA ; X-RAY DIFFRACTION 1.85Å

e2yvaB1[B:1-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNAA INITIATOR-ASSOCIATING PROTEIN DIAA ; X-RAY DIFFRACTION 1.85Å

e3cvjB1[B:0-242] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative phosphoheptose isomerase ; ligands: ACT,EDO,MG ; X-RAY DIFFRACTION 2.00Å

e3cvjC1[C:1-242] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative phosphoheptose isomerase ; ligands: ACT,EDO,MG ; X-RAY DIFFRACTION 2.00Å

e3cvjD1[D:1-242] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative phosphoheptose isomerase ; ligands: ACT,EDO,MG ; X-RAY DIFFRACTION 2.00Å

e2x3yB1[B:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yC1[C:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yD1[D:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yE1[E:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yF1[F:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yG1[G:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2x3yH1[H:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: ZN ; X-RAY DIFFRACTION 2.40Å

e2xblA1[A:3-196] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P,PG4,ZN ; X-RAY DIFFRACTION 1.62Å

e2xblB1[B:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P,ZN ; X-RAY DIFFRACTION 1.62Å

e2xblC1[C:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P,PGE,ZN ; X-RAY DIFFRACTION 1.62Å

e2xblD1[D:3-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PHOSPHOHEPTOSE ISOMERASE ; ligands: M7P,PEG,ZN ; X-RAY DIFFRACTION 1.62Å

e3trjB1[B:1-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.700Å

e3trjC1[C:1-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.700Å

e3trjD1[D:1-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.700Å

e4u6nA1[A:0-192] Image Pymol Jmol Links: PDB, SCOP, CATH

DnaA initiator-associating protein DiaA ; ligands: CL ; X-RAY DIFFRACTION 1.91Å

e5by2A1[A:0-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; X-RAY DIFFRACTION 2.800Å

e5i01C1[C:3-190] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: ZN ; X-RAY DIFFRACTION 2.370Å

e5i01A1[A:3-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: ZN ; X-RAY DIFFRACTION 2.370Å

e5i01B1[B:3-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: ZN ; X-RAY DIFFRACTION 2.370Å

e5i01D1[D:3-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: ZN ; X-RAY DIFFRACTION 2.370Å

e5lu7D1[D:1-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,ZN ; X-RAY DIFFRACTION 1.92Å

e5lu6B1[B:3-196] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: GOL,I22,PGE ; X-RAY DIFFRACTION 1.67Å

e5lu6C1[C:4-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: EDO,I22 ; X-RAY DIFFRACTION 1.67Å

e5lu6D1[D:3-196] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: EDO,GOL,I22 ; X-RAY DIFFRACTION 1.67Å

e5lu6A1[A:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: EDO,GOL,I22 ; X-RAY DIFFRACTION 1.67Å

e5ltzA1[A:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: I22,PG4,ZN ; X-RAY DIFFRACTION 1.67Å

e5ltzB1[B:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: EDO,I22,PG4,ZN ; X-RAY DIFFRACTION 1.67Å

e5ltzC1[C:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: I22,PGE,ZN ; X-RAY DIFFRACTION 1.67Å

e5ltzD1[D:3-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: GOL,I22,PEG,PG4,ZN ; X-RAY DIFFRACTION 1.67Å

e5lu5A1[A:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,PEG,PG4,PGE ; X-RAY DIFFRACTION 1.55Å

e5lu5B1[B:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: GOL,M7P,PG4 ; X-RAY DIFFRACTION 1.55Å

e5lu5C1[C:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,PG4,PGE ; X-RAY DIFFRACTION 1.55Å

e5lu5D1[D:4-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,PG4,PGE ; X-RAY DIFFRACTION 1.55Å

e5lu7A1[A:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,PG4,ZN ; X-RAY DIFFRACTION 1.92Å

e5lu7B1[B:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: M7P,ZN ; X-RAY DIFFRACTION 1.92Å

e5lu7C1[C:3-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoheptose isomerase ; ligands: EDO,M7P,PG4,ZN ; X-RAY DIFFRACTION 1.92Å

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