Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
Representatives:
e4xvnF1[F:1-53] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e4xvnA2[A:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e4xvnB1[B:6-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e4xvnC2[C:2-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e4xvnD2[D:2-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e4xvnE2[E:4-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Small terminase ; X-RAY DIFFRACTION 2.6Å
e6ejqB1[B:-2-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqG1[G:4-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqA2[A:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqC1[C:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqD1[D:4-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqF1[F:0-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6ejqH2[H:2-53] Image Pymol Jmol Links: PDB, SCOP, CATH
Terminase small subunit ; X-RAY DIFFRACTION 2.300Å
e6v1iA1[A:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iB1[B:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iC1[C:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iD1[D:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iE2[E:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iF2[F:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iG2[G:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iH1[H:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
e6v1iI1[I:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Small terminase protein ; ELECTRON MICROSCOPY
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