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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: Rossmann-like
H: Rossmann-related
T: FAD/NAD(P)-binding domain
F: Trp_halogenase

PF04820 CL0063

Representatives:

e3i3lA1[A:1-180,A:279-440] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALKYLHALIDASE CMLS ; ligands: FAD ; X-RAY DIFFRACTION 2.2Å

e8fovA2[A:0-240,A:334-513] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ACT,CL,FAD,GOL ; X-RAY DIFFRACTION 1.86Å

e8fovB2[B:0-240,B:334-512] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ACT,CL,FAD,GOL ; X-RAY DIFFRACTION 1.86Å

e8foxB1[B:0-240,B:334-514] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.89Å

e8foxC2[C:0-240,C:334-510] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.89Å

e8foxD2[D:0-240,D:334-509] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.89Å

e8ttiB2[B:2-242,B:336-528] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4,TRP ; X-RAY DIFFRACTION 1.98Å

e8ttiC1[C:2-242,C:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FAD,SO4,TRP ; X-RAY DIFFRACTION 1.98Å

e8ttiD1[D:2-242,D:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FAD,SO4,TRP ; X-RAY DIFFRACTION 1.98Å

e8ttjA1[A:2-242,A:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: 6CW,SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttjB2[B:2-242,B:336-528] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: 6CW,SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttjC2[C:2-242,C:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: 6CW,SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttjD2[D:3-242,D:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: 6CW,SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttkA1[A:2-242,A:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttkB1[B:2-242,B:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttkC1[C:2-242,C:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.98Å

e8ttkD1[D:2-242,D:336-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.98Å

e3nixB1[B:7-174,B:283-411] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixC1[C:4-174,C:283-412] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixD1[D:5-174,D:283-412] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixE1[E:3-174,E:283-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixF1[F:6-174,F:283-412] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixG1[G:3-174,G:283-413] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3nixH1[H:5-174,H:283-412] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e3e1tA1[A:5-180,A:291-381,A:460-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Halogenase ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.05Å

e3nixA1[A:4-174,A:283-414] Image Pymol Jmol Links: PDB, SCOP, CATH

Flavoprotein/dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.60Å

e5dbjE2[E:2-79,E:99-192,E:304-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase PltA ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.7Å

e5dbjA1[A:2-79,A:99-192,A:304-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase PltA ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.7Å

e5dbjB1[B:2-79,B:99-192,B:304-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase PltA ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.7Å

e5dbjC1[C:2-79,C:99-192,C:304-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase PltA ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.7Å

e5dbjD2[D:2-79,D:99-192,D:304-407,D:412-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase PltA ; ligands: FAD ; X-RAY DIFFRACTION 2.7Å

e5hy5A1[A:4-248,A:342-519] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophan 6-halogenase ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.68Å

e5bvaA1[A:5-171,A:279-403] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

flavin-dependent halogenase ; ligands: EDO,FAD ; X-RAY DIFFRACTION 1.87Å

e5bulA1[A:6-171,A:279-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

flavin-dependent halogenase triple mutant ; ligands: FAD ; X-RAY DIFFRACTION 1.978Å

e5uaoA2[A:21-246,A:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophane-5-halogenase ; ligands: CL,FAD ; X-RAY DIFFRACTION 1.88Å

e5uaoB2[B:26-246,B:334-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophane-5-halogenase ; X-RAY DIFFRACTION 1.88Å

e5uaoC2[C:26-246,C:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophane-5-halogenase ; X-RAY DIFFRACTION 1.88Å

e5uaoD1[D:26-246,D:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophane-5-halogenase ; ligands: CL,FAD ; X-RAY DIFFRACTION 1.88Å

e5bukA1[A:2-78,A:98-190,A:302-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase ; ligands: FAD,GOL ; X-RAY DIFFRACTION 1.95Å

e5bukB2[B:3-78,B:98-190,B:302-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FADH2-dependent halogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.95Å

e6frlB1[B:6-137,B:157-236,B:328-504] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophan halogenase superfamily ; ligands: GOL,MES,TLA ; X-RAY DIFFRACTION 2.5Å

e6frlA1[A:6-137,A:157-236,A:328-502] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tryptophan halogenase superfamily ; ligands: GOL,MES,TLA ; X-RAY DIFFRACTION 2.5Å

e6y1wA1[A:6-233,A:323-510] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative tryptophan halogenase ; ligands: BU9,BUD,MES,PO4,TLA ; X-RAY DIFFRACTION 1.6Å

e6y1wB2[B:11-233,B:323-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative tryptophan halogenase ; ligands: BUD,MES,TLA ; X-RAY DIFFRACTION 1.6Å

e7fcoA2[A:2-78,A:98-192,A:304-442] Image Pymol Jmol Links: PDB, SCOP, CATH

ChlB4 ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.51Å

e7fcoB2[B:2-78,B:98-192,B:304-442] Image Pymol Jmol Links: PDB, SCOP, CATH

ChlB4 ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.51Å

e8foxA2[A:0-240,A:334-514] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: SO4 ; X-RAY DIFFRACTION 1.89Å

e4z43A1[A:2-232,A:325-517] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Flavin-dependent tryptophan halogenase PrnA ; ligands: CL,FAD,SO4 ; X-RAY DIFFRACTION 2.290Å

e5wgrA1[A:3-222,A:383-585] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Flavin-dependent halogenase ; ligands: CD,CL,FAD,PM7,SO4 ; X-RAY DIFFRACTION 2.362Å

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