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
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
e5oscB2[B:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Proton-gated ion channel,Gamma-aminobutyric acid receptor subunit alpha-2,Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ACT,CL ; X-RAY DIFFRACTION 2.970Å
e5oscC3[C:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Proton-gated ion channel,Gamma-aminobutyric acid receptor subunit alpha-2,Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ACT,CL ; X-RAY DIFFRACTION 2.970Å
e5oscD3[D:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Proton-gated ion channel,Gamma-aminobutyric acid receptor subunit alpha-2,Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ACT,CL ; X-RAY DIFFRACTION 2.970Å
e5oscE2[E:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Proton-gated ion channel,Gamma-aminobutyric acid receptor subunit alpha-2,Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ACT,CL ; X-RAY DIFFRACTION 2.970Å
e6t9rBBB1[BBB:20-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6ssiB1[B:7-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: ABU,CA,GOL,MES,PG4,UMQ ; X-RAY DIFFRACTION 2.580Å
e6t9rCCC1[CCC:20-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rAAA1[AAA:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rDDD1[DDD:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rEEE1[EEE:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rFFF1[FFF:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rGGG1[GGG:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rHHH1[HHH:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rIII1[III:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6t9rJJJ1[JJJ:20-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine binding protein ; ligands: CL,GOL,K,MXQ,NAG,PO4 ; X-RAY DIFFRACTION 1.72Å
e6ssiC2[C:7-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: ABU,ACT,CA,GOL,MES,PG4,UMQ ; X-RAY DIFFRACTION 2.580Å
e6sspA2[A:9-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA ; X-RAY DIFFRACTION 3.250Å
e6sspB2[B:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6sspC1[C:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA ; X-RAY DIFFRACTION 3.250Å
e6sspE2[E:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6sspG2[G:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6sspH1[H:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6sspJ2[J:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6ssiA2[A:9-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: ABU,CA,GOL,MES,UMQ ; X-RAY DIFFRACTION 2.580Å
e6ssiD1[D:7-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: ABU,ACT,CA,GOL,MES,PG4,UMQ ; X-RAY DIFFRACTION 2.580Å
e6ssiE2[E:9-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: ABU,ACT,CA,GOL,MES,PG4,UMQ ; X-RAY DIFFRACTION 2.580Å
e6sspD2[D:9-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA ; X-RAY DIFFRACTION 3.250Å
e6sspF1[F:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA ; X-RAY DIFFRACTION 3.250Å
e6sspI2[I:10-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cys-loop ligand-gated ion channel ; ligands: CA,UMQ ; X-RAY DIFFRACTION 3.250Å
e6qkkB1[B:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,OXL,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkD1[D:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,NAG,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkG1[G:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkH1[H:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkJ1[J:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,NAG,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkC1[C:20-229] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkA1[A:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,NAG,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkE1[E:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkF1[F:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,PO4 ; X-RAY DIFFRACTION 2.20Å
e6qkkI1[I:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,H92,NAG,PO4 ; X-RAY DIFFRACTION 2.20Å
e6y1zA1[A:8-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
5-hydroxytryptamine receptor 3A ; ligands: HIS,NAG,O7B,TRP ; ELECTRON MICROSCOPY
e6y1zD1[D:8-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
5-hydroxytryptamine receptor 3A ; ligands: HIS,NAG,O7B,TRP ; ELECTRON MICROSCOPY
e6y1zB2[B:8-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
5-hydroxytryptamine receptor 3A ; ligands: HIS,NAG,O7B,TRP ; ELECTRON MICROSCOPY
e6y1zC2[C:8-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
5-hydroxytryptamine receptor 3A ; ligands: HIS,NAG,O7B,TRP ; ELECTRON MICROSCOPY
e6y1zE2[E:8-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
5-hydroxytryptamine receptor 3A ; ligands: HIS,NAG,O7B,TRP ; ELECTRON MICROSCOPY
e6qqpE1[E:20-228] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqoA1[A:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoB1[B:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoC1[C:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoF1[F:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoH1[H:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoI1[I:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoJ1[J:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqpA1[A:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpB1[B:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpC1[C:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpD1[D:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpF1[F:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpG1[G:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpH1[H:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpI1[I:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqpJ1[J:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JCW,NAG ; X-RAY DIFFRACTION 2.4Å
e6qqoD1[D:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoE1[E:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6qqoG1[G:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: EDO,JC8,NAG,PO4 ; X-RAY DIFFRACTION 2.5Å
e6uwzC2[C:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine receptor subunit beta ; ligands: NAG ; ELECTRON MICROSCOPY
e6uwzE1[E:1-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine receptor subunit gamma ; ligands: MAN,NAG ; ELECTRON MICROSCOPY
e6uwzB1[B:2-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine receptor subunit delta ; ligands: NAG ; ELECTRON MICROSCOPY
e6uwzA2[A:1-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine receptor subunit alpha ; ligands: BMA,MAN,NAG ; ELECTRON MICROSCOPY
e6uwzD2[D:1-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Acetylcholine receptor subunit alpha ; ligands: BMA,MAN,NAG ; ELECTRON MICROSCOPY
e6ur8B2[B:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6usfA1[A:5-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
chimera of soluble cytochrome b562 (BRIL) and neuronal acetylcholine receptor subunit alpha-4 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6ur8C2[C:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG ; ELECTRON MICROSCOPY
e6ur8E2[E:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6usfB1[B:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6usfC1[C:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG ; ELECTRON MICROSCOPY
e6usfE2[E:2-207] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neuronal acetylcholine receptor subunit beta-2 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6ur8A2[A:5-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Chimera of soluble cytochrome b562 (BRIL) and neuronal acetylcholine receptor subunit alpha-4 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6ur8D2[D:5-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Chimera of soluble cytochrome b562 (BRIL) and neuronal acetylcholine receptor subunit alpha-4 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6usfD1[D:5-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
chimera of soluble cytochrome b562 (BRIL) and neuronal acetylcholine receptor subunit alpha-4 ; ligands: NAG,QMR ; ELECTRON MICROSCOPY
e6ubsA2[A:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: PX4 ; ELECTRON MICROSCOPY
e6sgvA1[A:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ,NAG ; X-RAY DIFFRACTION 2.600Å
e6sgvB1[B:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sgvC1[C:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ,NAG ; X-RAY DIFFRACTION 2.600Å
e6sgvD1[D:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sgvE1[E:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ,NAG ; X-RAY DIFFRACTION 2.600Å
e6sgvF1[F:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sgvG1[G:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sgvI1[I:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: ACT,LDQ ; X-RAY DIFFRACTION 2.600Å
e6sgvJ1[J:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sh0A1[A:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0C1[C:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0D1[D:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0E1[E:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0F1[F:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0G1[G:20-224] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT ; X-RAY DIFFRACTION 2.50Å
e6ubsB1[B:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: PX4 ; ELECTRON MICROSCOPY
e6ubsC2[C:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: PX4 ; ELECTRON MICROSCOPY
e6ubsD1[D:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: PX4 ; ELECTRON MICROSCOPY
e6ubsE2[E:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: PX4 ; ELECTRON MICROSCOPY
e6ubtA1[A:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6ubtB2[B:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6ubtC2[C:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6ubtD1[D:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6ubtE1[E:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6ud3A1[A:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY
e6ud3C1[C:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY
e6ud3E1[E:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY
e6ud3D1[D:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY
e6ud3B2[B:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY,NAG ; ELECTRON MICROSCOPY
e6vm0A1[A:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm0E1[E:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm0C2[C:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm0B1[B:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm0D2[D:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm2A2[A:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm2E1[E:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm2C1[C:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm2B1[B:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm2D1[D:31-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm3A2[A:32-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm3E2[E:32-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm3C1[C:32-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm3B1[B:32-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6vm3D2[D:32-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6sgvH1[H:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Soluble acetylcholine receptor ; ligands: LDQ ; X-RAY DIFFRACTION 2.600Å
e6sh0B1[B:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0H1[H:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0J1[J:20-225] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6sh0I1[I:20-231] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Acetylcholine binding protein ; ligands: 4P0,ACT,GOL,NAG ; X-RAY DIFFRACTION 2.50Å
e6x3sB2[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: J94,NAG ; ELECTRON MICROSCOPY
e6x3sD1[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: J94,MAN,NAG ; ELECTRON MICROSCOPY
e6x3tB1[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3tD1[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3uB2[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3uD2[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,FYP,NAG ; ELECTRON MICROSCOPY
e6x3vB1[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3vD1[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3wB1[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3wD2[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3xB2[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3xD1[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,DZP,NAG ; ELECTRON MICROSCOPY
e6x3zB2[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3zD2[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x40B2[B:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x40D2[D:10-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit alpha-1 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3sE2[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid type A receptor subunit gamma-2 ; ligands: MAN,NAG ; ELECTRON MICROSCOPY
e6x3tE1[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid type A receptor subunit gamma-2 ; ELECTRON MICROSCOPY
e6x3uE1[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ligands: FYP,NAG ; ELECTRON MICROSCOPY
e6x3vE2[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ELECTRON MICROSCOPY
e6x3wE2[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ELECTRON MICROSCOPY
e6x3xE2[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ligands: DZP,NAG ; ELECTRON MICROSCOPY
e6x3zE2[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ELECTRON MICROSCOPY
e6x40E1[E:25-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit gamma-2 ; ELECTRON MICROSCOPY
e6x3sA2[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: J94,NAG ; ELECTRON MICROSCOPY
e6x3sC1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: J94,NAG ; ELECTRON MICROSCOPY
e6x3tA1[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3tC1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3uA2[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3uC1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3vA2[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3vC1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3wA1[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3wC2[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3xA1[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3xC2[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3zA2[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x3zC1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x40A1[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e6x40C1[C:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-2 ; ligands: ABU,NAG ; ELECTRON MICROSCOPY
e7a5vA2[A:7-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Gamma-aminobutyric acid receptor subunit beta-3,Gamma-aminobutyric acid receptor subunit beta-3 ; ligands: CL,HSM,NAG ; ELECTRON MICROSCOPY
e6ploA1[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6ploB1[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6ploC1[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6ploD2[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6ploE1[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plpA2[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plpB1[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plpC2[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plpD1[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plpE2[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plqA2[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plqB2[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plqC2[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plqD2[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plqE1[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: ABU ; ELECTRON MICROSCOPY
e6plrA2[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6plrB2[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6plrC1[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6plrD1[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6plrE1[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: GLY ; ELECTRON MICROSCOPY
e6plsA2[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6plsB2[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6plsC1[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6plsD2[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6plsE1[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6pltA1[A:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6pltE2[E:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6pltD1[D:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6pltC1[C:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
e6pltB1[B:23-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycine receptor subunit alphaZ1 ; ligands: TAU ; ELECTRON MICROSCOPY
Previous Nextsome 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