Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
![](/ecod/img/m.gif)
![](/ecod/img/m.gif)
![](/ecod/img/m.gif)
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Representatives:
e3ei1A4[A:1045-1140]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
DNA damage-binding protein 1 ; X-RAY DIFFRACTION 2.800Å
e7oopd3[d:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7opcd3[d:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7opdd3[d:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7onbA1[A:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7oo3d4[d:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7q3lC3[C:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7q4pC3[C:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e8cvpA3[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7uA3[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7vA4[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7wA4[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7xA3[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7yA4[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d7zA2[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d80A4[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7uknA4[A:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; X-RAY DIFFRACTION 2.87Å
e7v7bB2[B:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7v7bD4[D:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7v7cB2[B:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7v7cF4[F:1020-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8d81A2[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7q4oC2[C:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7evnA3[A:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7evo31[3:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e8ajmA2[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8ajnA2[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8ajoA1[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8g46A2[A:1045-1139] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e8e3iA1[A:1351-1443] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY
e8e3qA4[A:1351-1443] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY
e8h7gA2[A:1133-1216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e8hk131[3:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7zn7A1[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7znnA2[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ELECTRON MICROSCOPY
e7qttA4[A:1115-1197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e8ch6A4[A:1115-1197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e7vpx32[3:1133-1217] Image Pymol Jmol Links: PDB, SCOP, CATH
Splicing factor 3B subunit 3 ; ELECTRON MICROSCOPY
e8deyB1[B:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; X-RAY DIFFRACTION 3.700Å
e8deyE2[E:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; X-RAY DIFFRACTION 3.700Å
e7u8fB3[B:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; ligands: SO4 ; X-RAY DIFFRACTION 3.150Å
e7u8fE1[E:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA damage-binding protein 1 ; X-RAY DIFFRACTION 3.150Å
e8ov6A2[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DDB1deltaBPB ; ELECTRON MICROSCOPY
e8b3id1[d:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8oizA1[A:1022-1148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: EDO ; X-RAY DIFFRACTION 2.500Å
e8bu1A1[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.98Å
e8bumA1[A:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 3.359Å
e8b3dd2[d:1045-1140] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
Previous![](/ecod/img/p.gif)
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
![](/ecod/img/p.gif)
lacks the N-terminal helix, circularly permuted wing
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
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