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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

X: Acyl-CoA dehydrogenase middle domain-like
H: Acyl-CoA dehydrogenase middle domain-like
T: Acyl-CoA dehydrogenase middle domain-like
F: Acyl-CoA_dh_M

PF02770

Representatives:

e2uxwA2[A:210-327] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

VERY-LONG-CHAIN SPECIFIC ACYL-COA DEHYDROGENASE ; ligands: EDO,FAD,TH3 ; X-RAY DIFFRACTION 1.450Å

e2d29A1[A:121-234] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

ACYL-COA DEHYDROGENASE ; ligands: FAD ; X-RAY DIFFRACTION 1.65Å

e1rx0A1[A:132-240] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase family member 8, mitochondrial ; ligands: EDO,FAD ; X-RAY DIFFRACTION 1.76Å

e1w07A1[A:131-272] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACYL-COA OXIDASE ; ligands: CL,FAD,PT ; X-RAY DIFFRACTION 2.000Å

e5k3jA4[A:142-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase ; ligands: 6QA,FAD ; X-RAY DIFFRACTION 2.68Å

e5k3jB3[B:142-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase ; ligands: 6QA,FAD ; X-RAY DIFFRACTION 2.68Å

e7y0aB2[B:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD,FMT ; X-RAY DIFFRACTION 2.317Å

e7y0bB1[B:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: 7R3,FAD ; X-RAY DIFFRACTION 2.076Å

e7y0aA2[A:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD,FMT ; X-RAY DIFFRACTION 2.317Å

e7y0aD3[D:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD,FMT ; X-RAY DIFFRACTION 2.317Å

e7y0bA1[A:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD ; X-RAY DIFFRACTION 2.076Å

e7y0bC2[C:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD ; X-RAY DIFFRACTION 2.076Å

e7y0bD3[D:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD ; X-RAY DIFFRACTION 2.076Å

e8ciwB3[B:265-391] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: COA,FAD,FLC,ZKK ; X-RAY DIFFRACTION 1.93Å

e1w07B1[B:130-271] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACYL-COA OXIDASE ; ligands: CL,FAD,PT ; X-RAY DIFFRACTION 2.000Å

e3u33A9[A:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33C9[C:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33I6[I:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33J9[J:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33L9[L:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33B9[B:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33D9[D:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33F9[F:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33H9[H:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33K9[K:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33E2[E:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3u33G2[G:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative acyl-CoA dehydrogenase AidB ; ligands: CL,FAD ; X-RAY DIFFRACTION 2.80Å

e3djlA1[A:178-283] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN AIDB ; ligands: FAD ; X-RAY DIFFRACTION 1.7Å

e4xvxA3[A:113-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-[acyl-carrier-protein] dehydrogenase MbtN ; ligands: FDA,P33 ; X-RAY DIFFRACTION 2.300Å

e3x0yA1[A:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FMN ; X-RAY DIFFRACTION 2.30Å

e3x0xA2[A:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xB1[B:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xD1[D:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xC2[C:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xE2[E:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xF1[F:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xG2[G:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0xH1[H:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.11Å

e3x0yB2[B:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.30Å

e3x0yC3[C:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FMN ; X-RAY DIFFRACTION 2.30Å

e3x0yD2[D:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FMN ; X-RAY DIFFRACTION 2.30Å

e3x0yE2[E:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.30Å

e3x0yF2[F:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FMN ; X-RAY DIFFRACTION 2.30Å

e3x0yG2[G:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.30Å

e3x0yH3[H:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 2.30Å

e5xb8B3[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.795Å

e5xb8D3[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.795Å

e5xdbA3[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN ; X-RAY DIFFRACTION 1.811Å

e5xdbB3[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN,GOL ; X-RAY DIFFRACTION 1.811Å

e5xdbC2[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN ; X-RAY DIFFRACTION 1.811Å

e5xdbD1[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN,GOL ; X-RAY DIFFRACTION 1.811Å

e5xddB3[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN,GOL ; X-RAY DIFFRACTION 1.81Å

e5xddD1[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN,IND ; X-RAY DIFFRACTION 1.81Å

e5xdeA2[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN ; X-RAY DIFFRACTION 1.60Å

e5xdeB1[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83R,FMN,GOL ; X-RAY DIFFRACTION 1.60Å

e5xdeC3[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83R,FMN ; X-RAY DIFFRACTION 1.60Å

e5xdeD2[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83R,FMN,GOL ; X-RAY DIFFRACTION 1.60Å

e5xdgA2[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83U,FMN ; X-RAY DIFFRACTION 1.64Å

e5xdgB3[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83U,FMN,GOL ; X-RAY DIFFRACTION 1.64Å

e5xdgC2[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83U,FMN ; X-RAY DIFFRACTION 1.64Å

e5xdgD1[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: 83U,FMN,GOL ; X-RAY DIFFRACTION 1.64Å

e5xb8A2[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.795Å

e5xb8C2[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: SO4 ; X-RAY DIFFRACTION 1.795Å

e5xdcA1[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: IND ; X-RAY DIFFRACTION 1.5785Å

e5xdcC3[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: GOL,IND,SO4 ; X-RAY DIFFRACTION 1.5785Å

e5xdcD3[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: GOL,IND ; X-RAY DIFFRACTION 1.5785Å

e5xddA3[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN ; X-RAY DIFFRACTION 1.81Å

e5xddC1[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: FMN,IND ; X-RAY DIFFRACTION 1.81Å

e5xdcB3[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Thermophilic dibenzothiophene desulfurization enzyme C ; ligands: GOL,IND,SO4 ; X-RAY DIFFRACTION 1.5785Å

e5ol2C1[C:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COS,FAD ; X-RAY DIFFRACTION 3.1Å

e5y9dB1[B:141-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase 1 ; ligands: FAD ; X-RAY DIFFRACTION 2.500Å

e6es9A2[A:274-392] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 1.370Å

e6fahC3[C:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Caffeyl-CoA reductase-Etf complex subunit CarC ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 3.0Å

e5ol2F3[F:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COS,FAD ; X-RAY DIFFRACTION 3.1Å

e5y9dA2[A:141-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase 1 ; ligands: FAD ; X-RAY DIFFRACTION 2.500Å

e6es9B2[B:274-392] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 1.370Å

e6fahD2[D:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Caffeyl-CoA reductase-Etf complex subunit CarC ; ligands: FAD ; X-RAY DIFFRACTION 3.0Å

e5ys9A2[A:155-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase 3 ; ligands: FAD ; X-RAY DIFFRACTION 2.500Å

e5ys9B2[B:155-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-coenzyme A oxidase 3 ; ligands: FAD ; X-RAY DIFFRACTION 2.500Å

e5zw2A2[A:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; ligands: ACT,EDO,FAD ; X-RAY DIFFRACTION 1.8Å

e6af6A3[A:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; ligands: FAD,GLY,PRO ; X-RAY DIFFRACTION 1.62Å

e5zw0A2[A:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; X-RAY DIFFRACTION 2.54Å

e5zw0B2[B:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; X-RAY DIFFRACTION 2.54Å

e5zw7A1[A:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; ligands: FAD,GOL ; X-RAY DIFFRACTION 1.3Å

e5zw8A3[A:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

L-prolyl-[peptidyl-carrier protein] dehydrogenase ; ligands: FAD,MLA,PRO ; X-RAY DIFFRACTION 1.68Å

e6cxtB3[B:115-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Butyryl-CoA dehydrogenase ; ligands: EDO,FAD,FK4 ; X-RAY DIFFRACTION 1.900Å

e6cy8B2[B:115-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Butyryl-CoA dehydrogenase ; ligands: FAD,PNS ; X-RAY DIFFRACTION 2.7Å

e6ijcB1[B:159-280] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase family protein ; X-RAY DIFFRACTION 2.30Å

e6ijcA3[A:159-280] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase family protein ; X-RAY DIFFRACTION 2.30Å

e6u1vA3[A:111-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain-containing protein ; ligands: FDA ; X-RAY DIFFRACTION 1.75Å

e6u1vB2[B:111-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain-containing protein ; ligands: FDA ; X-RAY DIFFRACTION 1.75Å

e6u1vC1[C:111-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain-containing protein ; ligands: FDA ; X-RAY DIFFRACTION 1.75Å

e6u1vD1[D:111-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain-containing protein ; ligands: FDA ; X-RAY DIFFRACTION 1.75Å

e6sd8A3[A:167-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.510Å

e6sdaA3[A:167-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.869Å

e6sdaB3[B:167-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable acyl-CoA dehydrogenase ; ligands: FAD,MFK ; X-RAY DIFFRACTION 1.869Å

e6kptA3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.940Å

e6kptB1[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.940Å

e6kriA3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.600Å

e6kriB1[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.600Å

e6ks9A1[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.000Å

e6ks9B1[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.000Å

e6ksaA3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD,ST9 ; X-RAY DIFFRACTION 1.768Å

e6ksbA4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,PLM ; X-RAY DIFFRACTION 1.970Å

e6ksbB3[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,PLM ; X-RAY DIFFRACTION 1.970Å

e6kseA4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase FadE5 ; ligands: FAD,ST9 ; X-RAY DIFFRACTION 1.998Å

e6kseB3[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase FadE5 ; ligands: FAD,ST9 ; X-RAY DIFFRACTION 1.998Å

e6lpyA2[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD ; X-RAY DIFFRACTION 1.900Å

e6lpyB4[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: BUA,COA,FAD ; X-RAY DIFFRACTION 1.900Å

e6lq0A3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: 6NA,COA,FAD ; X-RAY DIFFRACTION 2.200Å

e6lq0B4[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: 6NA,COA,FAD ; X-RAY DIFFRACTION 2.200Å

e6lq1A4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,OCA ; X-RAY DIFFRACTION 2.800Å

e6lq1B1[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,OCA ; X-RAY DIFFRACTION 2.800Å

e6lq2A3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DKA,FAD ; X-RAY DIFFRACTION 1.900Å

e6lq2B3[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DKA,FAD ; X-RAY DIFFRACTION 1.900Å

e6lq3A4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DAO,FAD ; X-RAY DIFFRACTION 2.500Å

e6lq3B3[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DAO,FAD ; X-RAY DIFFRACTION 2.500Å

e6lq4A4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,MYR ; X-RAY DIFFRACTION 2.400Å

e6lq4B3[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,MYR ; X-RAY DIFFRACTION 2.400Å

e6lq5A4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,PLM ; X-RAY DIFFRACTION 1.900Å

e6lq5B1[B:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,PLM ; X-RAY DIFFRACTION 1.900Å

e6lq6A4[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DCR,FAD ; X-RAY DIFFRACTION 2.000Å

e6lq7A3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,X90 ; X-RAY DIFFRACTION 1.900Å

e6ksaB1[B:156-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD,SO4,ST9 ; X-RAY DIFFRACTION 1.768Å

e6lq6B1[B:156-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,DCR,FAD ; X-RAY DIFFRACTION 2.000Å

e6lq7B1[B:156-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,FAD,X90 ; X-RAY DIFFRACTION 1.900Å

e6wy9A1[A:119-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3483 ; ligands: FDA,GOL ; X-RAY DIFFRACTION 2.0Å

e6wy9B3[B:116-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3481 ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e6lq8A3[A:160-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,EO3,FAD ; X-RAY DIFFRACTION 1.850Å

e6lq8B3[B:156-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: COA,EO3,FAD ; X-RAY DIFFRACTION 1.850Å

e6wy8B3[B:119-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3483 ; ligands: FAD,SO4 ; X-RAY DIFFRACTION 2.1Å

e6wy8C1[C:116-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3481 ; ligands: CL ; X-RAY DIFFRACTION 2.1Å

e6wy8D3[D:119-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3483 ; ligands: FAD ; X-RAY DIFFRACTION 2.1Å

e6wy8A1[A:116-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase domain protein Tcur3481 ; ligands: PGE ; X-RAY DIFFRACTION 2.1Å

e7q84A2[A:131-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 2 of Peroxisomal acyl-coenzyme A oxidase 1 ; ligands: EDO,PGE ; X-RAY DIFFRACTION 2.0Å

e7q84B1[B:131-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 2 of Peroxisomal acyl-coenzyme A oxidase 1 ; ligands: EDO,PEG,PGE ; X-RAY DIFFRACTION 2.0Å

e7q86A3[A:131-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 2 of Peroxisomal acyl-coenzyme A oxidase 1 ; ligands: FAD ; X-RAY DIFFRACTION 2.09Å

e7q86B3[B:131-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 2 of Peroxisomal acyl-coenzyme A oxidase 1 ; ligands: FAD ; X-RAY DIFFRACTION 2.09Å

e7p98A2[A:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.000Å

e7p98B2[B:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.000Å

e7p9aA3[A:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KX,FAD ; X-RAY DIFFRACTION 1.500Å

e7p9aB2[B:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KX,FAD ; X-RAY DIFFRACTION 1.500Å

e7p9xA2[A:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KW,FAD ; X-RAY DIFFRACTION 1.650Å

e7p9xB1[B:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KW,FAD ; X-RAY DIFFRACTION 1.650Å

e7p9xC1[C:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KW,FAD ; X-RAY DIFFRACTION 1.650Å

e7p9xD2[D:117-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Short-chain acyl-CoA dehydrogenase ; ligands: 4KW,FAD ; X-RAY DIFFRACTION 1.650Å

e7w0jA2[A:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; X-RAY DIFFRACTION 3.1Å

e7w0jD1[D:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; X-RAY DIFFRACTION 3.1Å

e7w0jG2[G:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; X-RAY DIFFRACTION 3.1Å

e7w0jF2[F:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; X-RAY DIFFRACTION 3.1Å

e7w0jB1[B:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; ligands: 875 ; X-RAY DIFFRACTION 3.1Å

e7w0jC1[C:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; ligands: 875 ; X-RAY DIFFRACTION 3.1Å

e7w0jE2[E:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; ligands: 875 ; X-RAY DIFFRACTION 3.1Å

e7w0jH2[H:122-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase ; X-RAY DIFFRACTION 3.1Å

e7xp7A3[A:150-255] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cyclohexanecarboxyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.95Å

e7xp7B1[B:150-255] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cyclohexanecarboxyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.95Å

e7xp7D1[D:150-255] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cyclohexanecarboxyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.95Å

e7xp7C2[C:150-255] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cyclohexanecarboxyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 1.95Å

e8hk0A1[A:121-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.29Å

e8hk0B1[B:121-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.29Å

e7y0aC2[C:144-255] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: FAD,FMT ; X-RAY DIFFRACTION 2.317Å

e8ciwA3[A:265-391] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FAD,ZKK ; X-RAY DIFFRACTION 1.93Å

e3m9vA1[A:136-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FAD-dependent oxidoreductase ; ligands: TYD ; X-RAY DIFFRACTION 2.05Å

e4kcfA3[A:136-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FAD-DEPENDENT OXIDOREDUCTASE ; ligands: AKM,FMN ; X-RAY DIFFRACTION 2.1Å

e4zxvB2[B:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; X-RAY DIFFRACTION 3.000Å

e4zxvC3[C:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; X-RAY DIFFRACTION 3.000Å

e4zxvD3[D:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; X-RAY DIFFRACTION 3.000Å

e4zyjA2[A:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; ligands: TYD ; X-RAY DIFFRACTION 2.736Å

e4zyjB3[B:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; ligands: TYD ; X-RAY DIFFRACTION 2.736Å

e4zyjC3[C:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; ligands: TYD ; X-RAY DIFFRACTION 2.736Å

e4zyjD1[D:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; ligands: TYD ; X-RAY DIFFRACTION 2.736Å

e4zxvA1[A:140-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DnmZ ; X-RAY DIFFRACTION 3.000Å

e5gj7A3[A:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase type 2 domain protein ; X-RAY DIFFRACTION 1.950Å

e5gj7B2[B:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase type 2 domain protein ; X-RAY DIFFRACTION 1.950Å

e5gj8A2[A:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

e5gj8B3[B:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

e5gj8C2[C:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

e4doyA2[A:125-239] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.789Å

e3mxlD1[D:121-234] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Nitrososynthase ; X-RAY DIFFRACTION 3.150Å

e3mxlB5[B:129-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Nitrososynthase ; X-RAY DIFFRACTION 3.150Å

e4doyD11[D:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.789Å

e3mxlC6[C:129-234] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Nitrososynthase ; X-RAY DIFFRACTION 3.150Å

e4jekA14[A:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekC14[C:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekE14[E:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekH14[H:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekB14[B:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekD14[D:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekF14[F:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4jekG14[G:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 2.4Å

e4doyF17[F:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.789Å

e4doyC17[C:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; X-RAY DIFFRACTION 1.789Å

e4doyB17[B:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; ligands: GOL ; X-RAY DIFFRACTION 1.789Å

e4doyE17[E:125-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; ligands: GOL ; X-RAY DIFFRACTION 1.789Å

e4doyG17[G:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; ligands: GOL ; X-RAY DIFFRACTION 1.789Å

e4doyH17[H:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dibenzothiophene desulfurization enzyme C ; ligands: GOL ; X-RAY DIFFRACTION 1.789Å

e4nxlB3[B:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DszC ; X-RAY DIFFRACTION 2.26Å

e4nxlC3[C:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DszC ; X-RAY DIFFRACTION 2.26Å

e4nxlD3[D:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DszC ; X-RAY DIFFRACTION 2.26Å

e4nxlA3[A:125-236] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DszC ; X-RAY DIFFRACTION 2.26Å

e5z8tA1[A:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase type 2 domain protein ; ligands: FAD ; X-RAY DIFFRACTION 2.33Å

e5z8tB2[B:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase type 2 domain protein ; ligands: FAD ; X-RAY DIFFRACTION 2.33Å

e5z8tC1[C:113-234] Image Pymol Jmol Links: PDB, SCOP, CATH

Acyl-CoA dehydrogenase type 2 domain protein ; ligands: FAD ; X-RAY DIFFRACTION 2.33Å

e8cdaI1[I:128-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable monooxygenase ; ligands: PO4 ; X-RAY DIFFRACTION 2.1Å

Next

e1jqiA1[A:124-234] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

short chain acyl-CoA dehydrogenase ; ligands: CAA,FAD ; X-RAY DIFFRACTION 2.1Å

e1siqA1[A:129-238] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glutaryl-CoA dehydrogenase ; ligands: FAD ; X-RAY DIFFRACTION 2.1Å

e1r2jA1[A:106-212] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

protein FkbI ; ligands: FAD ; X-RAY DIFFRACTION 2.100Å

e1ukwA1[A:149-258] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

ACYL-COA DEHYDROGENASE ; ligands: FAD ; X-RAY DIFFRACTION 2.4Å

e1ivhA1[A:129-241] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ISOVALERYL-COA DEHYDROGENASE ; ligands: COS,FAD ; X-RAY DIFFRACTION 2.60Å

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.

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