Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices




Representatives:
e2w50A1[A:9-106]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
ARMET-LIKE PROTEIN 1 ; ligands: PO4 ; X-RAY DIFFRACTION 1.60Å
e2rqyA1[A:14-112]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Putative uncharacterized protein ; SOLUTION NMR
e4bitA2[A:1-104] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CEREBRAL DOPAMINE NEUROTROPHIC FACTOR ; SOLUTION NMR
e2lpnA1[A:1-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CEREBRAL DOPAMINE NEUROTROPHIC FACTOR ; SOLUTION NMR
e2kvdA1[A:-1-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MESENCEPHALIC ASTROCYTE-DERIVED NEUROTROPHIC FACTOR ; SOLUTION NMR
e2w51A2[A:1-99] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN ARMET ; X-RAY DIFFRACTION 2.80Å
e6ha7C2[C:23-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mesencephalic astrocyte-derived neurotrophic factor ; X-RAY DIFFRACTION 2.49Å
e6ha7D2[D:22-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mesencephalic astrocyte-derived neurotrophic factor ; X-RAY DIFFRACTION 2.49Å

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes