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
Representatives:
e5wylC1[C:29-446] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Putative uncharacterized protein ; X-RAY DIFFRACTION 2.640Å
e6lqtAE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e6zqaUJ1[UJ:2-424,UJ:488-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e6rxxUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
UTP10 ; ELECTRON MICROSCOPY
e6rxzUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
UTP10 ; ELECTRON MICROSCOPY
e7d5tAE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e7sukLM1[LM:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e5wykAE1[AE:3-421] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e5wlcLM1[LM:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Utp10 ; ELECTRON MICROSCOPY
e6nd4M1[M:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Utp10 ; ELECTRON MICROSCOPY
e6ke6AE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH
U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY
e5wylA1[A:27-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Putative uncharacterized protein ; X-RAY DIFFRACTION 2.640Å
e5oqlG1[G:3-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Utp10 ; ELECTRON MICROSCOPY
e5wy4A1[A:31-363] Image Pymol Jmol Links: PDB, SCOP, CATH
Putative uncharacterized protein ; X-RAY DIFFRACTION 2.500Å
e6rxtUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
UTP10 ; ELECTRON MICROSCOPY
e6rxyUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Utp10 ; ELECTRON MICROSCOPY
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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