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: Rossmann-like

X: C-terminal domain in CAC2185-like proteins

X: P-loop domains-like

X: EreA/ChaN-like

X: HUP domain-like

X: HAD domain-like

X: Flavodoxin-like

X: Nucleic acid-binding domain of nonstructural protein 3

X: EDD domain

X: Phosphorylase/hydrolase-like

X: LigB-like

X: Other Rossmann-like structures with the crossover

X: N-terminal domain in NTD biosynthesis operon protein NtdA

X: Flavivirus non-structural protein 1 (NS1) a/b domain

X: STT3/PglB/AglB core domain

X: C-terminal domain in arabinosyltransferase C

X: Nqo1 FMN-binding domain-like

X: beta-carbonic anhydrase-like

X: a/b domain in QueA-like proteins (Pfam 02547)

X: a/b domain in AF0625-like proteins

X: CbiG linker domain

X: CobE/CbiG C-terminal domain-like

X: a/b domain in CV3147-like proteins

X: alpha/beta knot

X: Peptidyl-tRNA hydrolase II

X: Subtilisin-like

X: Insert domain in hypothetical protein PF0380

X: a/b domain in flagellar biosynthesis protein flhA

X: a/b domain in family 98 glycoside hydrolases

X: UPF0302 protein BA_1542/GBAA1542/BAS1430

X: Cellulose Synthase Subunit B a/b domain

X: Core protein P7

X: Type III R-M system modification subunit C-terminal domain

X: Restriction endonuclease-like

X: ClpP/crotonase

X: The "swivelling" beta/beta/alpha domains

X: Barstar (barnase inhibitor)

X: Ribosomal protein L13/L15p/L18e/L32e

X: C-terminal subdomain in Lon-related proteases catalytic domains

X: Atg7 N-terminal domain-like

X: MurF and HprK N-domain-like

X: DTD-like

X: Cell-division inhibitor MinC, N-terminal domain

X: CRISPR-associated Csx3

X: SpoIIaa-like

X: Small protrusion domain in cytoplasmic polyhedrosis virus capsid shell protein

X: Polycomb protein Eed insertion domain

X: HSP90 C-terminal a/b domain

X: STING C-terminal domain

X: C-terminal domain of poxin

X: Glycerate kinase I (Pfam 02595) domain II

X: Dihydrofolate reductases

X: Anticodon-binding domain of Class II aaRS

X: TolB, N-terminal domain

X: ITPase-like

X: Kinesin-like protein KIF23 C-terminal domain

X: N-terminal domain of GerK3 germinant receptor

X: Glutaminase/Asparaginase C-terminal domain

X: O-glucosyltransferase rumi N-terminal domain

X: NIF3 (NGG1p interacting factor 3)-like

X: Isocitrate/Isopropylmalate dehydrogenase-like

X: Single-stranded-DNA-specific exonuclease RecJ C-terminal domain

X: UDP-Glycosyltransferase/glycogen phosphorylase

X: CofD-like

X: Ferredoxin reductase-like, C-terminal NADP-linked domain

X: Alkaline phosphatase-like

X: Nucleotide-diphospho-sugar transferases

X: Nucleoside hydrolase

X: PK C-terminal domain-like

X: ATP synthase (F1-ATPase), gamma subunit

X: CinA-like

X: B12-dependent dehydratase associated subunit

X: TK C-terminal domain-like

H: TK C-terminal domain-like

T: TK C-terminal domain-like

F: Transketolase_C

F: PFOR_II

F: OxoGdeHyase_C

F: XFP_C

Representatives:

e3ahcA3[A:615-806] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose 5-phosphate/fructose 6-phosphate phosphoketolase ; ligands: EDO,NA ; X-RAY DIFFRACTION 1.7Å

e8io6B2[B:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6C1[C:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6D3[D:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6E3[E:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6F3[F:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6G1[G:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io6H2[H:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io7A1[A:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io7B1[B:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8io8B1[B:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9A2[A:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9B3[B:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9C3[C:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9D1[D:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9E3[E:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9F1[F:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9G2[G:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9H1[H:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9I2[I:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9J3[J:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9K2[K:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8io9L2[L:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ANP ; ELECTRON MICROSCOPY

e8ioaA3[A:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioaB2[B:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeA1[A:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeB3[B:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeC1[C:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeD2[D:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeE1[E:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeF3[F:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeG2[G:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeH2[H:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeI3[I:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeJ3[J:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeK2[K:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ioeL2[L:603-796] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e3ahdA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO,NA ; X-RAY DIFFRACTION 1.9Å

e3aheA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO,NA ; X-RAY DIFFRACTION 2.1Å

e3ahfA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: GOL ; X-RAY DIFFRACTION 2.3Å

e3ahgA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO,NA ; X-RAY DIFFRACTION 1.9Å

e3ahhA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO,NA ; X-RAY DIFFRACTION 2.1Å

e3ahiA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO,NA ; X-RAY DIFFRACTION 2.1Å

e3ahjA3[A:615-806] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

XYLULOSE 5-PHOSPHATE/FRUCTOSE 6-PHOSPHATE PHOSPHOKETOLASE ; ligands: EDO ; X-RAY DIFFRACTION 2.1Å

e3ai7A3[A:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7B3[B:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7C3[C:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7D3[D:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7E3[E:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7F3[F:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7G3[G:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e3ai7H3[H:615-814] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylulose-5-phosphate/fructose-6-phosphate phosphoketolase ; X-RAY DIFFRACTION 2.200Å

e6guaA3[A:618-822] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaB3[B:618-821] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaC3[C:618-822] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaD3[D:618-822] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaE3[E:618-821] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaF3[F:618-822] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaG3[G:618-822] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6guaH3[H:618-821] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable phosphoketolase ; SOLUTION SCATTERING 1.95Å

e6lxvA2[A:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvB1[B:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvC3[C:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvD3[D:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvE3[E:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvF1[F:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvG2[G:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e6lxvH1[H:615-807] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Phosphoketolase ; ELECTRON MICROSCOPY

e7c8iB3[B:615-812] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI