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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

X: Aldehyde ferredoxin oxidoreductase, N-terminal domain
H: Aldehyde ferredoxin oxidoreductase, N-terminal domain
T: Aldehyde ferredoxin oxidoreductase, N-terminal domain
F: AFOR_N

PF02730

Representatives:

e1b25A2[A:1-210] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE) ; ligands: PTT,SF4 ; X-RAY DIFFRACTION 1.85Å

e8c0zA2[A:1-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: MG,SF4,T7R ; ELECTRON MICROSCOPY

e8c0zB1[B:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: MG,SF4,T7R ; ELECTRON MICROSCOPY

e1b4nD2[D:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: CA,PTE,SF4 ; X-RAY DIFFRACTION 2.4Å

e1b4nC2[C:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: CA,PTE,SF4 ; X-RAY DIFFRACTION 2.4Å

e1b25D2[D:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE) ; ligands: PTT,SF4 ; X-RAY DIFFRACTION 1.85Å

e1aorB2[B:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

ALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: NA,PTE,SF4 ; X-RAY DIFFRACTION 2.3Å

e1b25C2[C:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE) ; ligands: PTT,SF4 ; X-RAY DIFFRACTION 1.85Å

e1b25B2[B:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE) ; ligands: PTT,SF4 ; X-RAY DIFFRACTION 1.85Å

e1aorA2[A:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

ALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: NA,PTE,SF4 ; X-RAY DIFFRACTION 2.3Å

e1b4nB2[B:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: CA,PTE,SF4 ; X-RAY DIFFRACTION 2.4Å

e1b4nA2[A:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE ; ligands: CA,PTE,SF4 ; X-RAY DIFFRACTION 2.4Å

e4z3wA1[A:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.208Å

e4z3wB1[B:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.208Å

e4z3wC1[C:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4 ; X-RAY DIFFRACTION 2.208Å

e4z3wD1[D:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.208Å

e4z3xA1[A:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,PGE,SF4 ; X-RAY DIFFRACTION 1.85Å

e4z3xB1[B:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 1.85Å

e4z3xC1[C:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,SF4 ; X-RAY DIFFRACTION 1.85Å

e4z3xD1[D:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: 4KX,MG,MTE,PG4,PGE,SF4,UNL ; X-RAY DIFFRACTION 1.85Å

e4z3zA1[A:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.666Å

e4z3zB1[B:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,ZN ; X-RAY DIFFRACTION 2.666Å

e4z3zC1[C:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.666Å

e4z3zD1[D:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.666Å

e4z40A1[A:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.35Å

e4z40B1[B:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,ZN ; X-RAY DIFFRACTION 2.35Å

e4z40C1[C:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.35Å

e4z40D1[D:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: MG,MTE,SF4,UNL,ZN ; X-RAY DIFFRACTION 2.35Å

e4z3yA1[A:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: BYC,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.35Å

e4z3yB2[B:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: BYC,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.35Å

e4z3yC1[C:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: BYC,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.35Å

e4z3yD1[D:1-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzoyl-CoA reductase, putative ; ligands: BYC,MG,MTE,SF4,UNL ; X-RAY DIFFRACTION 2.35Å

e6x1oA2[A:1-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formaldehyde:ferredoxin oxidoreductase wor5 ; ligands: CL,MG,PTE,SF4 ; X-RAY DIFFRACTION 2.094Å

e6x1oC2[C:1-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formaldehyde:ferredoxin oxidoreductase wor5 ; ligands: CL,MG,PTE,SF4 ; X-RAY DIFFRACTION 2.094Å

e6x6uA2[A:1-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formaldehyde:ferredoxin oxidoreductase wor5 ; ligands: CL,MG,PO4,PTE,SF4 ; X-RAY DIFFRACTION 1.944Å

e6x6uC2[C:1-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Formaldehyde:ferredoxin oxidoreductase wor5 ; ligands: CL,MG,PTE,SF4 ; X-RAY DIFFRACTION 1.944Å

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