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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

X: F-box domain
H: F-box domain
T: F-box domain
F: F-box-like

PF12937 CL0271

Representatives:

e1fs1A1[A:109-149] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYCLIN A/CDK2-ASSOCIATED P19 ; X-RAY DIFFRACTION 1.8Å

e7sa1B1[B:5-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat MAX2 homolog ; ligands: CIT ; X-RAY DIFFRACTION 3.21Å

e7sa1D1[D:5-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat MAX2 homolog ; ligands: CIT ; X-RAY DIFFRACTION 3.21Å

e8byaE1[E:2095-2135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8or0E2[E:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e2e31A2[A:47-114] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-BOX ONLY PROTEIN 2 ; X-RAY DIFFRACTION 2.4Å

e3l2oB2[B:55-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box only protein 4 ; X-RAY DIFFRACTION 2.8Å

e2e32A2[A:49-113] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-BOX ONLY PROTEIN 2 ; X-RAY DIFFRACTION 3.52Å

e2e32C2[C:49-113] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-BOX ONLY PROTEIN 2 ; X-RAY DIFFRACTION 3.52Å

e5jh5A2[A:1065-1098] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2B ; X-RAY DIFFRACTION 2.55Å

e6bvaE1[E:1064-1103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2B ; X-RAY DIFFRACTION 2.660Å

e6byhE1[E:0-931] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2A ; X-RAY DIFFRACTION 2.610Å

e6bvaF1[F:1064-1103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2B ; X-RAY DIFFRACTION 2.660Å

e6byhF1[F:0-931] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2A ; X-RAY DIFFRACTION 2.610Å

e6byhI1[I:889-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2A ; X-RAY DIFFRACTION 2.610Å

e6c16C1[C:892-926] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2A ; X-RAY DIFFRACTION 3.27Å

e6c16F1[F:890-929] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lysine-specific demethylase 2A ; X-RAY DIFFRACTION 3.27Å

e1fqvO1[O:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fqvE1[E:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fqvA1[A:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fs1C1[C:109-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CYCLIN A/CDK2-ASSOCIATED P19 ; X-RAY DIFFRACTION 1.8Å

e1fqvG1[G:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e2assB1[B:2097-2135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; X-RAY DIFFRACTION 3.0Å

e1fqvM1[M:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fqvC1[C:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fqvK1[K:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1fqvI1[I:109-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.8Å

e1ldkE1[E:3109-3149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2-like protein type gamma ; X-RAY DIFFRACTION 3.1Å

e2astB1[B:2097-2135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; X-RAY DIFFRACTION 2.3Å

e2ovpB2[B:2263-2364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat protein 7 ; X-RAY DIFFRACTION 2.90Å

e1nexD2[D:270-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CDC4 protein ; X-RAY DIFFRACTION 2.7Å

e3mksB2[B:270-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division control protein 4 ; ligands: SO4 ; X-RAY DIFFRACTION 2.6Å

e2ovqB2[B:2263-2364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat protein 7 ; ligands: SO4 ; X-RAY DIFFRACTION 2.6Å

e1fs2A3[A:105-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.9Å

e1fs2C3[C:105-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SKP2 ; X-RAY DIFFRACTION 2.9Å

e3v7dD4[D:270-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division control protein 4 ; X-RAY DIFFRACTION 2.31Å

e3v7dB4[B:269-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division control protein 4 ; X-RAY DIFFRACTION 2.31Å

e3mksD4[D:269-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cell division control protein 4 ; ligands: SO4 ; X-RAY DIFFRACTION 2.6Å

e3wsoA2[A:2-68] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box only protein 44 ; X-RAY DIFFRACTION 2.6Å

e5ibkE1[E:275-322] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 7 ; X-RAY DIFFRACTION 2.500Å

e5ibkB1[B:281-321] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 7 ; X-RAY DIFFRACTION 2.500Å

e5v4bB2[B:2263-2364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 7 ; ligands: SO4 ; X-RAY DIFFRACTION 2.600Å

e6o60C3[C:9-52] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat protein 2 ; X-RAY DIFFRACTION 2.50Å

e6ttuT2[T:179-288] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 1A ; ELECTRON MICROSCOPY

e6wnxA1[A:1-112] Image Pymol Jmol Links: PDB, SCOP, CATH

F-box/WD repeat-containing protein 11 ; X-RAY DIFFRACTION 2.5000Å

e6wnxD1[D:2-112] Image Pymol Jmol Links: PDB, SCOP, CATH

F-box/WD repeat-containing protein 11 ; X-RAY DIFFRACTION 2.5000Å

e6wnxG1[G:1-112] Image Pymol Jmol Links: PDB, SCOP, CATH

F-box/WD repeat-containing protein 11 ; X-RAY DIFFRACTION 2.5000Å

e7b5lT2[T:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7b5mT1[T:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7b5rT2[T:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e6w66B3[B:319-362] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat protein 17 ; X-RAY DIFFRACTION 3.21Å

e6wcqB3[B:319-362] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat protein 17 ; ELECTRON MICROSCOPY

e6vcdB2[B:205-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat protein 5 ; ELECTRON MICROSCOPY

e7t1yB2[B:263-364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 7 ; X-RAY DIFFRACTION 2.55Å

e7t1zB2[B:263-364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 7 ; X-RAY DIFFRACTION 2.77Å

e7z8bF2[F:121-194] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat-containing protein 8 ; ELECTRON MICROSCOPY

e8cdjF2[F:96-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e8cdkF1[F:96-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7z8tF1[F:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7z8vF1[F:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7zbwF2[F:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e7zbzF2[F:95-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S-phase kinase-associated protein 2 ; ELECTRON MICROSCOPY

e8bylB1[B:2093-2135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e2ovrB2[B:2263-2364] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/WD repeat protein 7 ; ligands: SO4 ; X-RAY DIFFRACTION 2.50Å

e1nexB2[B:270-369] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CDC4 protein ; X-RAY DIFFRACTION 2.7Å

e5vztB1[B:63-141] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box only protein 31 ; X-RAY DIFFRACTION 2.700Å

e1p22A2[A:135-252] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-BOX/WD-REPEAT PROTEIN 1A ; X-RAY DIFFRACTION 2.95Å

e5hzgF1[F:17-57] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

F-box/LRR-repeat MAX2 homolog ; X-RAY DIFFRACTION 3.3Å

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

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