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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

X: Immunoglobulin-like beta-sandwich
H: Immunoglobulin-related
T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like
F: Zona_pellucida

PF00100 CL0159

Representatives:

e3nk3A1[A:51-157] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zona pellucida 3 ; X-RAY DIFFRACTION 2.60Å

e3d4cA2[A:372-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; ligands: CD ; X-RAY DIFFRACTION 2.900Å

e3d4gA2[A:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gB2[B:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gC2[C:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gD2[D:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gE2[E:372-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gF2[F:372-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gG2[G:372-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3d4gH2[H:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; X-RAY DIFFRACTION 2.300Å

e3nk4A2[A:51-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zona pellucida 3 ; X-RAY DIFFRACTION 2.00Å

e3nk3B1[B:51-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zona pellucida 3 ; ligands: FLC ; X-RAY DIFFRACTION 2.60Å

e3nk4B3[B:52-157] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zona pellucida 3 ; ligands: FLC ; X-RAY DIFFRACTION 2.00Å

e3ef7A4[A:372-480] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; ligands: ZN ; X-RAY DIFFRACTION 3.100Å

e3ef7B4[B:372-480] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein, LINKER, Zona pellucida protein 3 ; ligands: ZN ; X-RAY DIFFRACTION 3.100Å

e4wrnA3[A:429-530] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein,Uromodulin ; ligands: NAG ; X-RAY DIFFRACTION 3.20Å

e4wrnB3[B:423-530] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein,Uromodulin ; ligands: NAG ; X-RAY DIFFRACTION 3.20Å

e5osqA3[A:372-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein,Zona pellucida sperm-binding protein 3 ; ligands: CA ; X-RAY DIFFRACTION 2.050Å

e5osqB2[B:372-473] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein,Zona pellucida sperm-binding protein 3 ; X-RAY DIFFRACTION 2.050Å

e6zs5A1[A:328-443] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e6zyaA2[A:328-430] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e6tqkA2[A:323-430] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e6tqlA2[A:323-430] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e6tqkC1[C:328-444] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e6tqlC1[C:328-444] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uromodulin ; ELECTRON MICROSCOPY

e5hzvA3[A:749-843] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Maltose-binding periplasmic protein,Endoglin ; ligands: GOL ; X-RAY DIFFRACTION 2.69Å

e3nk3A2[A:167-343] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zona pellucida 3 ; ligands: FLC ; 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.

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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