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
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
binds one zinc with two CxxC motifs on two beta-hairpins
binds two zincs. one in the same way as rubredoxin, probably related to rubredoxin. the other in a similar way as glucocorticoid receptor
binds zinc with one beta-hairpin and one helix, the helix binds DNA
Representatives:
e2h62A1[A:12-114] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 2 ; X-RAY DIFFRACTION 1.85Å
e1agqA1[A:39-135] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLIAL CELL-DERIVED NEUROTROPHIC FACTOR ; X-RAY DIFFRACTION 1.9Å
e3rjrA2[A:250-361] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-1 ; X-RAY DIFFRACTION 3.05Å
e2tgiA1[A:1-112] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,
TRANSFORMING GROWTH FACTOR ,BETA 2 ; X-RAY DIFFRACTION
e6macA1[A:2-109] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 11 ; X-RAY DIFFRACTION 2.34Å
e6gl7B1[B:98-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6gl7A1[A:98-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2nA1[A:117-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glial cell line-derived neurotrophic factor ; ELECTRON MICROSCOPY
e6q2sA1[A:122-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like protein SMT3,Artemin ; ELECTRON MICROSCOPY
e6q2jA1[A:201-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 15 ; ELECTRON MICROSCOPY
e6q2oA1[A:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2nB1[B:117-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glial cell line-derived neurotrophic factor ; ELECTRON MICROSCOPY
e6q2sB1[B:122-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like protein SMT3,Artemin ; ELECTRON MICROSCOPY
e6q2jB1[B:201-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 15 ; ELECTRON MICROSCOPY
e6q2oB1[B:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2rA1[A:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2rB1[B:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2rU1[U:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6q2rV1[V:100-197] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Neurturin ; ELECTRON MICROSCOPY
e6umxA1[A:261-310,A:338-375] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 8 ; X-RAY DIFFRACTION 2.790Å
e6umxB1[B:261-310,B:339-375] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 8 ; X-RAY DIFFRACTION 2.790Å
e6sf1B1[B:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; ligands: NI ; X-RAY DIFFRACTION 2.8Å
e6sf2B1[B:325-429] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 2 ; X-RAY DIFFRACTION 3.30Å
e6sf2E1[E:325-429] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 2 ; X-RAY DIFFRACTION 3.30Å
e6sf3B1[B:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 2.3Å
e6z3gA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; ligands: CIT ; X-RAY DIFFRACTION 2.78Å
e6z3hA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 3.13Å
e6z3jA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; ligands: EDO,GOL,SO4 ; X-RAY DIFFRACTION 1.65Å
e6z3jB1[B:396-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; ligands: CL,EDO,GOL,SO4 ; X-RAY DIFFRACTION 1.65Å
e6z3lA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 2.50Å
e6z3mA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e6z3mB1[B:396-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e6z3mG1[G:396-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e6z3mH1[H:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e6z3mM1[M:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e6z3mN1[N:396-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 5.50Å
e7ab8B1[B:138-235] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glial cell line-derived neurotrophic factor ; X-RAY DIFFRACTION 2.20Å
e7amlC1[C:138-235] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glial cell line-derived neurotrophic factor ; ligands: NAG ; ELECTRON MICROSCOPY
e7amlF1[F:138-235] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glial cell line-derived neurotrophic factor ; ligands: NAG ; ELECTRON MICROSCOPY
e6y6nA1[A:311-426] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Inhibin beta A chain ; ligands: ODQ,SO4 ; X-RAY DIFFRACTION 2.030Å
e6y6nB1[B:311-426] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Inhibin beta A chain ; ligands: ODQ,SO4 ; X-RAY DIFFRACTION 2.030Å
e6y6oA1[A:311-426] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Inhibin beta A chain ; ligands: OCK,SO4 ; X-RAY DIFFRACTION 2.040Å
e6y6oB1[B:311-426] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Inhibin beta A chain ; ligands: OCK,SO4 ; X-RAY DIFFRACTION 2.040Å
e7l0jA1[A:459-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Muellerian-inhibiting factor ; ligands: NAG ; X-RAY DIFFRACTION 2.6Å
e6xm2I1[I:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 1.91Å
e6xm2J1[J:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 1.91Å
e6xm2K1[K:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 1.91Å
e6xm2L1[L:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 1.91Å
e7rcoA1[A:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 2.900Å
e7rcoB1[B:303-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-2 ; X-RAY DIFFRACTION 2.900Å
e7mrzA1[A:300-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 11 ; X-RAY DIFFRACTION 3.000Å
e7olyA1[A:311-426] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta A chain ; X-RAY DIFFRACTION 3.26Å
e7u5oA1[A:293-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta B chain ; X-RAY DIFFRACTION 3.45Å
e7u5oB1[B:293-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta B chain ; X-RAY DIFFRACTION 3.45Å
e7u5oC1[C:293-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta B chain ; X-RAY DIFFRACTION 3.45Å
e7u5pB1[B:311-426] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta A chain ; X-RAY DIFFRACTION 3.14Å
e7u5pD1[D:311-426] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta A chain ; X-RAY DIFFRACTION 3.14Å
e7u5pF1[F:311-426] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta A chain ; X-RAY DIFFRACTION 3.14Å
e7u5pH1[H:311-426] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Inhibin beta A chain ; X-RAY DIFFRACTION 3.14Å
e7poiA1[A:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; ligands: NAG,TAR ; X-RAY DIFFRACTION 2.90Å
e7poiB1[B:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; ligands: TAR ; X-RAY DIFFRACTION 2.90Å
e7pojA1[A:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 3.5Å
e7pojB1[B:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; ligands: NAG ; X-RAY DIFFRACTION 3.5Å
e7ppaA1[A:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 1.48Å
e7ppaB1[B:320-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 1.48Å
e7ppbA1[A:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 2.40Å
e7ppcA1[A:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 3.60Å
e7ppcB1[B:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 3.60Å
e7ppcC1[C:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 3.60Å
e7ppcD1[D:321-424] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 10 ; X-RAY DIFFRACTION 3.60Å
e7y1rA2[A:243-361] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-1 proprotein ; ELECTRON MICROSCOPY
e7y1rB1[B:243-361] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-1 proprotein ; ELECTRON MICROSCOPY
e7ag0B1[B:10-114] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 2 ; ligands: GOL ; X-RAY DIFFRACTION 3.1Å
e7zjfB1[B:383-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 1.3Å
e7zjfA1[A:397-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; X-RAY DIFFRACTION 1.3Å
e8e3gB1[B:16-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å
e8e3gD1[D:16-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth/differentiation factor 5 ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å
e8c7hB1[B:279-329,B:353-390] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-1 ; ELECTRON MICROSCOPY
e8c7hD1[D:280-390] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transforming growth factor beta-1 ; ELECTRON MICROSCOPY
e8e3gA1[A:11-114] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 2 ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å
e8e3gC1[C:11-114] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bone morphogenetic protein 2 ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å
e8fxsB1[B:294-349,B:371-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 3.15Å
e8dc0B1[B:1-50,B:75-112] Image Pymol Jmol Links: PDB, SCOP, CATH
; X-RAY DIFFRACTION 1.93Å
e8fxvA2[A:293-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.2Å
PreviousPseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes