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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

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

X: Rubredoxin-like

binds one zinc with two CxxC motifs on two beta-hairpins

X: Trm112p-like
H: Trm112p-like
T: Trm112p-like
F: Rieske

PF00355 CL0516

Representatives:

e1jm1A2[A:139-194] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN SOXF ; ligands: FES,MG ; X-RAY DIFFRACTION 1.11Å

e2bmoA3[A:78-133] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

OXYGENASE-ALPHA NBDO ; ligands: EDO,EOH,FES ; X-RAY DIFFRACTION 1.200Å

e1nykA2[A:131-174] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN ; ligands: FES,MG ; X-RAY DIFFRACTION 1.31Å

e5cxmA1[A:76-113] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6/f complex iron-sulfur subunit ; ligands: FES,NI ; X-RAY DIFFRACTION 1.7Å

e3azcA2[A:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 2.0Å

e1g8jB2[B:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES ; X-RAY DIFFRACTION 2.03Å

e1q90C2[C:132-172] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome B6-F complex iron-sulfur subunit ; ligands: FES,TDS ; X-RAY DIFFRACTION 3.1Å

e2zt9D3[D:98-136] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit 1 ; ligands: FES ; X-RAY DIFFRACTION 3.0Å

e2d2cD3[D:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.8Å

e2d2cQ3[Q:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.8Å

e2e74D3[D:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.0Å

e2e75D3[D:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.55Å

e2e76D3[D:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.41Å

e1g8jD2[D:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES ; X-RAY DIFFRACTION 2.03Å

e1g8kD2[D:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES,HG ; X-RAY DIFFRACTION 1.64Å

e1g8kF2[F:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES,HG ; X-RAY DIFFRACTION 1.64Å

e1g8kH2[H:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES,HG ; X-RAY DIFFRACTION 1.64Å

e1nykB2[B:130-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN ; ligands: FES ; X-RAY DIFFRACTION 1.31Å

e4h0lD3[D:107-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.25Å

e3fouA3[A:131-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

QUINOL-CYTOCHROME C REDUCTASE, RIESKE IRON-SULFUR SUBUNIT ; ligands: FES,PR ; X-RAY DIFFRACTION 2.1Å

e3fouB3[B:131-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

QUINOL-CYTOCHROME C REDUCTASE, RIESKE IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 2.1Å

e1vf5Q4[Q:107-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN ; ligands: FES ; X-RAY DIFFRACTION 3.0Å

e4h13D6[D:107-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 3.07Å

e1vf5D4[D:107-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN ; ligands: FES ; X-RAY DIFFRACTION 3.0Å

e4h44D4[D:107-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT 1 ; ligands: FES ; X-RAY DIFFRACTION 2.7Å

e4pv1D1[D:101-141] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit ; ligands: FES ; X-RAY DIFFRACTION 2.997Å

e4ogqD2[D:93-131] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit 1 ; ligands: FES ; X-RAY DIFFRACTION 2.50Å

e4aayD1[D:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AROB ; ligands: FES ; X-RAY DIFFRACTION 2.7Å

e4aayF1[F:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AROB ; ligands: FES ; X-RAY DIFFRACTION 2.7Å

e4aayH1[H:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AROB ; ligands: FES ; X-RAY DIFFRACTION 2.7Å

e5nqdB1[B:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Arsenite oxidase small subunit AioB Rieske [2Fe-2S] cluster ; ligands: FES ; X-RAY DIFFRACTION 2.20Å

e5nqdD2[D:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Arsenite oxidase small subunit AioB Rieske [2Fe-2S] cluster ; ligands: FES ; X-RAY DIFFRACTION 2.20Å

e5nqdF1[F:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Arsenite oxidase small subunit AioB Rieske [2Fe-2S] cluster ; ligands: FES ; X-RAY DIFFRACTION 2.20Å

e5nqdH2[H:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH

Arsenite oxidase small subunit AioB Rieske [2Fe-2S] cluster ; ligands: FES ; X-RAY DIFFRACTION 2.20Å

e6rqfL2[L:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit, chloroplastic ; ligands: FES ; ELECTRON MICROSCOPY

e6rqfD1[D:106-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit, chloroplastic ; ligands: FES ; ELECTRON MICROSCOPY

e6klsA1[A:109-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske-I iron sulfur protein ; ligands: FES,HEC ; ELECTRON MICROSCOPY

e6klsD3[D:109-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske-I iron sulfur protein ; ligands: FES,HEC ; ELECTRON MICROSCOPY

e6klvA1[A:109-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske-I iron sulfur protein ; ligands: FES,HEC ; ELECTRON MICROSCOPY

e6klvD2[D:109-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske-I iron sulfur protein ; ligands: FES,HEC ; ELECTRON MICROSCOPY

e7r0wD3[D:118-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske domain, PetC ; ligands: FES ; ELECTRON MICROSCOPY

e7r0wL2[L:118-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Rieske domain, PetC ; ligands: FES ; ELECTRON MICROSCOPY

e7zxyD1[D:118-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit 2 ; ligands: FES ; ELECTRON MICROSCOPY

e7zxyL3[L:118-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cytochrome b6-f complex iron-sulfur subunit 2 ; ligands: FES ; ELECTRON MICROSCOPY

e8ed4B2[B:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AroB ; ligands: FES,HEM ; X-RAY DIFFRACTION 2.25Å

e8ed4D1[D:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AroB ; ligands: FES,HEM ; X-RAY DIFFRACTION 2.25Å

e8ed4F2[F:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AroB ; ligands: FES,HEC ; X-RAY DIFFRACTION 2.25Å

e8ed4H2[H:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AroB ; ligands: FES,PG4 ; X-RAY DIFFRACTION 2.25Å

e8cffB2[B:58-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: EDO,FES,PEG ; X-RAY DIFFRACTION 1.57Å

e8ccqB2[B:102-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FES ; X-RAY DIFFRACTION 1.89Å

e1vm9A2[A:44-85] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Toluene-4-monooxygenase system protein C ; ligands: EDO,FES,MG ; X-RAY DIFFRACTION 1.48Å

e1rieA2[A:138-179] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE IRON-SULFUR PROTEIN ; ligands: FES ; X-RAY DIFFRACTION 1.5Å

e1fqtA2[A:42-85] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE-TYPE FERREDOXIN OF BIPHENYL DIOXYGENASE ; ligands: FES,GOL ; X-RAY DIFFRACTION 1.6Å

e1g8kB2[B:59-100] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARSENITE OXIDASE ; ligands: FES,HG ; X-RAY DIFFRACTION 1.64Å

e3gkeC3[C:47-96] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DdmC ; ligands: ACT,FES ; X-RAY DIFFRACTION 1.75Å

e1z01A3[A:83-135] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-oxo-1,2-dihydroquinoline 8-monooxygenase, oxygenase component ; ligands: FES ; X-RAY DIFFRACTION 1.8Å

e2de6A3[A:68-121] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TERMINAL OXYGENASE COMPONENT OF CARBAZOLE ; ligands: FES ; X-RAY DIFFRACTION 1.8Å

e1rfsA2[A:106-146] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIESKE PROTEIN ; ligands: FES ; X-RAY DIFFRACTION 1.83Å

e2b1xA3[A:87-143] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NAPHTHALENE DIOXYGENASE LARGE SUBUNIT ; ligands: FES,MPD ; X-RAY DIFFRACTION 2.0Å

e1uliA3[A:97-151] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BIPHENYL DIOXYGENASE LARGE SUBUNIT ; ligands: FES ; X-RAY DIFFRACTION 2.2Å

e4aayB2[B:102-143] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AROB ; ligands: FES ; X-RAY DIFFRACTION 2.7Å

e3eqqA3[A:94-148] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Benzene 1,2-dioxygenase subunit alpha ; ligands: FES ; X-RAY DIFFRACTION 3.200Å

X: RING/U-box-like

binds two zincs. one in the same way as rubredoxin, probably related to rubredoxin. the other in a similar way as glucocorticoid receptor

X: Glucocorticoid receptor-like

binds zinc with one beta-hairpin and one helix, the helix binds DNA

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes