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
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
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Refs: Structure 14, 1489-1498; Current opinion in structural biology 18, 358-365
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125436, 2-crossover-3, 5-crossover-6
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Representatives:
e3cmmA4[A:175-260]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.700Å
e8se9A4[A:169-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8sebA4[A:169-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8sv8A3[A:169-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e2v31A1[A:201-312] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
UBIQUITIN-ACTIVATING ENZYME E1 X ; SOLUTION NMR
e2lzjA1[A:201-312] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
UBIQUITIN-LIKE MODIFIER-ACTIVATING ENZYME 1 ; SOLUTION NMR
e4p22A2[A:209-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.748Å
e4p22B2[B:209-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.748Å
e3cmmC2[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.700Å
e4nnjA3[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: GOL ; X-RAY DIFFRACTION 2.4Å
e4nnjC3[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.4Å
e4ii2A3[A:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.200Å
e5knlA3[A:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.5Å
e5knlD1[D:171-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.5Å
e5l6jA4[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: CL,GOL ; X-RAY DIFFRACTION 2.68Å
e5l6hA2[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.3Å
e5l6hC2[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.3Å
e5l6iA6[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: CL ; X-RAY DIFFRACTION 2.76Å
e5l6iC4[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: CL,GOL ; X-RAY DIFFRACTION 2.76Å
e5l6jC5[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: GOL ; X-RAY DIFFRACTION 2.68Å
e5um6A2[A:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.794Å
e5tr4A1[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.200Å
e5tr4C2[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.200Å
e6dc6A4[A:209-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 1 ; X-RAY DIFFRACTION 3.150Å
e6dc6C2[C:209-297] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 1 ; X-RAY DIFFRACTION 3.150Å
e6o82A3[A:173-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.60Å
e6o82C3[C:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.60Å
e6o83A3[A:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: MPD ; X-RAY DIFFRACTION 3.15Å
e6o83C3[C:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.15Å
e6nyaA5[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 2.07Å
e6nyaD1[D:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 2.07Å
e4ii3C1[C:174-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.900Å
e6zqhA6[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 2.026Å
e6zqhC6[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: PG4 ; X-RAY DIFFRACTION 2.026Å
e7k5jD6[D:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jA6[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jC2[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jG1[G:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jI6[I:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jK1[K:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jS5[S:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e7k5jU3[U:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.42Å
e6zhtC3[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; ligands: CL ; X-RAY DIFFRACTION 2.300Å
e6zhsA5[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; ligands: GOL ; X-RAY DIFFRACTION 2.350Å
e6zhuA6[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.18Å
e6zhuE5[E:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.18Å
e6zhuC3[C:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.18Å
e6zhuG1[G:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Ubiquitin-activating enzyme E1 1 ; X-RAY DIFFRACTION 3.18Å
e7zh9A5[A:175-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-activating enzyme E1 1 ; ligands: GOL,MG,SO4 ; X-RAY DIFFRACTION 1.705Å
e7pvnA4[A:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6 ; ligands: GOL ; X-RAY DIFFRACTION 2.71Å
e7pvnB2[B:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6 ; ligands: GOL ; X-RAY DIFFRACTION 2.71Å
e7pyvA3[A:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6,Ubiquitin-like modifier-activating enzyme 1,Ubiquitin-like modifier-activating enzyme 6 ; X-RAY DIFFRACTION 3.268Å
e7pyvB3[B:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6,Ubiquitin-like modifier-activating enzyme 1,Ubiquitin-like modifier-activating enzyme 6 ; X-RAY DIFFRACTION 3.268Å
e7solA4[A:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6 ; X-RAY DIFFRACTION 2.25Å
e7solC4[C:206-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ubiquitin-like modifier-activating enzyme 6 ; X-RAY DIFFRACTION 2.25Å
e8seaA3[A:169-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
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Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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