Home Help

X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

Keyword search

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: Nicotinic receptor ligand binding domain-like
T: Nicotinic receptor ligand binding domain-like
F: Neur_chan_LBD

PF02931

Representatives:

e1uw6A1[A:0-207] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ACETYLCHOLINE-BINDING PROTEIN ; ligands: NCT ; X-RAY DIFFRACTION 2.2Å

e4bog21[2:1-209] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acetylcholine receptor subunit alpha ; ELECTRON MICROSCOPY

e4qh1B1[B:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: BR,BXA ; X-RAY DIFFRACTION 3.39Å

e4qh1C1[C:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: BR,BXA ; X-RAY DIFFRACTION 3.39Å

e4qh1D1[D:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: BR,BXA ; X-RAY DIFFRACTION 3.39Å

e4qh1E1[E:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: BR,BXA ; X-RAY DIFFRACTION 3.39Å

e4qh5A1[A:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: CL ; X-RAY DIFFRACTION 3Å

e4qh5B1[B:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: CL,NA ; X-RAY DIFFRACTION 3Å

e4qh5C1[C:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: CL,NA,PLC ; X-RAY DIFFRACTION 3Å

e4qh5D1[D:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: CL,NA ; X-RAY DIFFRACTION 3Å

e4qh5E1[E:5-192] Image Pymol Jmol Links: PDB, SCOP, CATH

Proton-gated ion channel ; ligands: CL,PLC ; X-RAY DIFFRACTION 3Å

e5lg3A1[A:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3B1[B:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3C1[C:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3D1[D:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3E1[E:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3F1[F:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3G1[G:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3H1[H:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3I1[I:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lg3J1[J:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gamma-aminobutyric-acid receptor subunit beta-1 ; ligands: Z80 ; X-RAY DIFFRACTION 3.4Å

e5lidA1[A:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidB1[B:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidC1[C:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidD1[D:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidE1[E:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidF1[F:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidG1[G:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidH1[H:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidI1[I:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5lidJ1[J:11-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cys-loop ligand-gated ion channel ; ligands: 6XY ; X-RAY DIFFRACTION 3.7Å

e5tinB1[B:6-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 2.61Å

e5tinD1[D:5-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 2.61Å

e5tioB1[B:6-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 3.25Å

e5tioD1[D:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 3.25Å

e5tinA1[A:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 2.61Å

e5tinC1[C:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 2.61Å

e5tinE1[E:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 2.61Å

e5tioC1[C:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,NAG,ZN ; X-RAY DIFFRACTION 3.25Å

e5tioA1[A:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 3.25Å

e5tioE1[E:8-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Glycine receptor subunit alpha-3 ; ligands: 7C6,GLY,ZN ; X-RAY DIFFRACTION 3.25Å

e7kuyE1[E:21-243] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit beta, Green fluorescent protein chimera ; ligands: NAG,SY9 ; ELECTRON MICROSCOPY

e5bkfA1[A:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkfB1[B:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkfC1[C:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkfD1[D:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkfE1[E:29-243] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit beta,Green fluorescent protein ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkgA1[A:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkgB1[B:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkgC1[C:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkgD1[D:15-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit alpha-2 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e5bkgE1[E:29-243] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit beta,Green fluorescent protein ; ligands: GLY,NAG ; ELECTRON MICROSCOPY

e7l31E1[E:29-243] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Glycine receptor subunit beta,Green fluorescent protein ; ligands: NAG,SY9 ; ELECTRON MICROSCOPY

e7mluA1[A:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mluE1[E:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mluD1[D:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mluB1[B:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mluC1[C:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mlvD1[D:9-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: NAG ; ELECTRON MICROSCOPY

e7mlvA1[A:10-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ELECTRON MICROSCOPY

e7mlvB1[B:8-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ELECTRON MICROSCOPY

e7mlvC1[C:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ELECTRON MICROSCOPY

e7mlyD1[D:9-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: GLY ; ELECTRON MICROSCOPY

e7mlyA1[A:8-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: GLY ; ELECTRON MICROSCOPY

e7mlyB1[B:8-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: GLY ; ELECTRON MICROSCOPY

e7mlyC1[C:9-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor alpha 1 ; ligands: GLY ; ELECTRON MICROSCOPY

e7mlyE1[E:33-243] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glycine receptor beta ; ligands: GLY ; ELECTRON MICROSCOPY

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