Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
alpha bundlesalpha-helix bundles with mainly parallel helices
Representatives:
e3nylA1[A:352-547] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta (A4) protein (Peptidase nexin-II, Alzheimer disease), isoform CRA_b ; X-RAY DIFFRACTION 2.8Å
e3qmkA3[A:292-486] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; X-RAY DIFFRACTION 2.2Å
e3umkA3[A:309-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; ligands: ACT,CD,CU ; X-RAY DIFFRACTION 2.60Å
e3umhA1[A:313-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; ligands: ACT,CD ; X-RAY DIFFRACTION 2.00Å
e3umiA3[A:310-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; ligands: ACT,CD,ZN ; X-RAY DIFFRACTION 2.40Å
e3pmrA4[A:354-548] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMYLOID-LIKE PROTEIN 1 ; ligands: PO4 ; X-RAY DIFFRACTION 2.1Å
e3q7lA3[A:292-486] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.2Å
e3qmkB3[B:292-487] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.2Å
e3q7gB3[B:292-486] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: SCR ; X-RAY DIFFRACTION 2.3Å
e3q7lB3[B:292-487] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.2Å
e3pmrB3[B:354-551] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMYLOID-LIKE PROTEIN 1 ; ligands: PO4 ; X-RAY DIFFRACTION 2.1Å
e3q7gA3[A:292-494] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: SCR ; X-RAY DIFFRACTION 2.3Å
e1tknA2[A:460-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; SOLUTION NMR
e3k66A3[A:234-451] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Beta-amyloid-like protein ; X-RAY DIFFRACTION 2.70Å
e3k6bA3[A:234-451] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Beta-amyloid-like protein ; ligands: NT2 ; X-RAY DIFFRACTION 2.80Å
e3nyjA3[A:360-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; X-RAY DIFFRACTION 3.2Å
e4rdaA1[A:292-494] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: UAP,ZN ; X-RAY DIFFRACTION 2.497Å
e4rd9A1[A:302-489] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; X-RAY DIFFRACTION 2.60Å
e4rd9B1[B:305-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; X-RAY DIFFRACTION 2.60Å
e4rdaB1[B:292-487] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 1 ; ligands: UAP ; X-RAY DIFFRACTION 2.497Å
e4yn0B1[B:306-507] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid beta A4 protein ; ligands: NAG ; X-RAY DIFFRACTION 2.2Å
e5buoA1[A:310-494] Image Pymol Jmol Links: PDB, SCOP, CATH
Amyloid beta A4 protein ; ligands: ACT,GOL,MG,SCN,SGN,SO4,ZN ; X-RAY DIFFRACTION 2.31Å
e5tptA1[A:373-569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 2 ; X-RAY DIFFRACTION 2.420Å
e5tptB1[B:387-567] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Amyloid-like protein 2 ; X-RAY DIFFRACTION 2.420Å
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