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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

X: Repetitive alpha hairpins
H: Helical domain in TOPLESS related protein 2 (TPR2)
T: Helical domain in TOPLESS related protein 2 (TPR2)
F: TPR1-like_2nd

PF21889

Representatives:

e5c6qA2[A:35-163] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.25Å

e5en7A1[A:40-180] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.936Å

e5c6vA2[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en6A1[A:40-180] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 3.0920Å

e5c6vB1[B:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en6B2[B:40-175] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 3.0920Å

e5c6vC3[C:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5c6vD2[D:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en7C2[C:40-180] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.936Å

e5en7E2[E:40-181] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.936Å

e5c7eA3[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en7G2[G:40-179] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.936Å

e5c7eB2[B:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en8A2[A:40-177] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.22Å

e5c7eC1[C:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5en8B2[B:40-178] Image Pymol Jmol Links: PDB, SCOP, CATH

SMU-1 ; X-RAY DIFFRACTION 2.22Å

e5c7eD3[D:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e6q8fA1[A:39-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; ligands: BTB ; X-RAY DIFFRACTION 1.9Å

e5c7eE3[E:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e5c7eF3[F:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 3.1Å

e6q8fB1[B:39-180,B:184-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; ligands: CL ; X-RAY DIFFRACTION 1.9Å

e6q8iA1[A:39-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e5c7fA3[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.7Å

e5c7fB3[B:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.7Å

e6q8iB1[B:39-180,B:182-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e6q8iE2[E:39-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e5c7fC1[C:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.7Å

e5c7fD1[D:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.7Å

e6q8iF1[F:39-180,F:184-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e6q8iI1[I:39-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e4zheA1[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.44Å

e6q8iJ1[J:39-180,J:184-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e4zheB2[B:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.44Å

e4zheC1[C:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.44Å

e6q8iM2[M:39-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e6q8iN1[N:39-180,N:182-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; X-RAY DIFFRACTION 3.17Å

e4zheD2[D:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ASPR2 protein ; X-RAY DIFFRACTION 2.44Å

e5jhpA1[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 3.15Å

e6q8jA2[A:39-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

WD40 repeat-containing protein SMU1 ; ligands: XS4 ; X-RAY DIFFRACTION 1.8Å

e5jhpC2[C:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 3.15Å

e5j9kA2[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 2.55Å

e5j9kB1[B:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 2.55Å

e5ja5A1[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 2.0Å

e5jgcA2[A:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 2.08Å

e5jhpD3[D:35-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 3.15Å

e5jhpB2[B:35-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TPR1 ; X-RAY DIFFRACTION 3.15Å

e5nqsA2[A:35-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; X-RAY DIFFRACTION 2.61Å

e5nqsB2[B:35-179] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; X-RAY DIFFRACTION 2.61Å

e5nqvA3[A:35-179] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; ligands: GOL,TLA ; X-RAY DIFFRACTION 1.95Å

e5nqvB3[B:35-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; ligands: GOL ; X-RAY DIFFRACTION 1.95Å

e5nqvC2[C:35-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; ligands: GOL,TLA ; X-RAY DIFFRACTION 1.95Å

e5nqvD3[D:35-178] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein TOPLESS ; ligands: TLA ; X-RAY DIFFRACTION 1.95Å

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.

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