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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

X: Protein kinase/SAICAR synthase/ATP-grasp
H: Protein kinase/SAICAR synthase/ATP-grasp
T: Protein kinase
F: ,TGF_beta_GS

PF00069 PF08515

Representatives:

e3faaA1[A:171-500] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: 55F,PO4 ; X-RAY DIFFRACTION 3.20Å

e3h9rA1[A:172-499] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACTIVIN RECEPTOR TYPE-1 ; ligands: PG4,SO4,TAK ; X-RAY DIFFRACTION 2.35Å

e2x7oA1[A:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: ZOP ; X-RAY DIFFRACTION 3.70Å

e3faaB1[B:171-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: 55F,PO4 ; X-RAY DIFFRACTION 3.20Å

e3faaC1[C:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: 55F,PO4 ; X-RAY DIFFRACTION 3.20Å

e3faaD1[D:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: 55F,PO4 ; X-RAY DIFFRACTION 3.20Å

e3faaE1[E:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: 55F,PO4 ; X-RAY DIFFRACTION 3.20Å

e3kcfA1[A:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: JZO,PO4 ; X-RAY DIFFRACTION 2.8Å

e3kcfB1[B:171-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: JZO,PO4 ; X-RAY DIFFRACTION 2.8Å

e3kcfC1[C:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: JZO,PO4 ; X-RAY DIFFRACTION 2.8Å

e3kcfD1[D:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: JZO,PO4 ; X-RAY DIFFRACTION 2.8Å

e3kcfE1[E:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-beta receptor type-1 ; ligands: JZO,PO4 ; X-RAY DIFFRACTION 2.8Å

e2x7oB1[B:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: ZOP ; X-RAY DIFFRACTION 3.70Å

e2x7oC1[C:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: ZOP ; X-RAY DIFFRACTION 3.70Å

e2x7oD1[D:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: ZOP ; X-RAY DIFFRACTION 3.70Å

e2x7oE1[E:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: ZOP ; X-RAY DIFFRACTION 3.70Å

e4c02A1[A:178-499] Image Pymol Jmol Links: PDB, SCOP, CATH

ACTIVIN RECEPTOR TYPE-1 ; ligands: EDO,FLC,TAK ; X-RAY DIFFRACTION 2.17Å

e1iasA1[A:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e1iasB1[B:171-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e1iasC1[C:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e1iasD1[D:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e1iasE1[E:171-500] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGF-BETA RECEPTOR TYPE I ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e6eixA1[A:192-503] Image Pymol Jmol Links: PDB, SCOP, CATH

Activin receptor type-1 ; ligands: A3F,EDO ; X-RAY DIFFRACTION 2.30Å

e6i1sA1[A:170-499] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Activin receptor type-1 ; ligands: E26,EDO,SO4 ; X-RAY DIFFRACTION 1.52Å

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 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