Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
Representatives:
e2b9sA2[A:60-145] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
topoisomerase I-like protein ; X-RAY DIFFRACTION 2.27Å
e1oisA2[A:159-251] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION
e1rrjA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 2.3Å
e1k4sA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION 3.2Å
e1seuA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 3Å
e1r49A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 3.13Å
e1t8iA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 3Å
e1tl8A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION 3.1Å
e1lpqA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 3.14Å
e1a36A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TOPOISOMERASE I ; X-RAY DIFFRACTION 2.800Å
e1a35A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (DNA TOPOISOMERASE I) ; X-RAY DIFFRACTION 2.500Å
e1ej9A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION 2.6Å
e1k4tA4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION 2.1Å
e1nh3A4[A:230-318] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 3.1Å
e1rr8C7[C:231-319] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 2.6Å
e1a31A7[A:215-319] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (TOPOISOMERASE I) ; X-RAY DIFFRACTION 2.1Å
e1sc7A1[A:230-319] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA TOPOISOMERASE I ; X-RAY DIFFRACTION 3.0Å
e6z03A4[A:17-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 2.197Å
e6z01A4[A:17-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 1.9Å
e6z01B2[B:17-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; ligands: CL ; X-RAY DIFFRACTION 1.9Å
e6z03B5[B:17-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DNA topoisomerase I ; X-RAY DIFFRACTION 2.197Å
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