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
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
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Representatives:
e5gyqA1[A:3-171]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
Spike glycoprotein ; ligands: NAG ; X-RAY DIFFRACTION 2.10Å
e2ghvC1[C:320-502]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
SPIKE GLYCOPROTEIN ; X-RAY DIFFRACTION 2.2Å
e8fu9C2[C:309-509] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8gjmB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h00A1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h00B4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h00C1[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h01A2[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h01B3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e8h01C3[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h3nC2[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hebA4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hebB4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hebC1[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hecA1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hecB2[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8hecC3[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iotA3[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iotB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iotC2[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iouA2[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iouB4[B:329-469,B:490-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e8iouC3[C:329-470,C:490-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e8ituA2[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8ituB2[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e8ituC3[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7uowA1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7uowB1[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7uowC3[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xdlA3[A:312-512] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e7xdlB2[B:312-512] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e7xdlC3[C:312-512] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e7xj6A4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xj6B4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xj6C4[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xj8B3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xj8C1[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7zjlA2[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ELECTRON MICROSCOPY
e7zjlB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ELECTRON MICROSCOPY
e7zjlC2[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ELECTRON MICROSCOPY
e8csjA1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8csjB2[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8csjC2[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8fu8C4[C:313-513] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8gjmA2[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ELECTRON MICROSCOPY
e8gjmC4[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8h3dA3[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ELECTRON MICROSCOPY
e8h3dB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ligands: NAG ; ELECTRON MICROSCOPY
e8h3dC2[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ligands: NAG ; ELECTRON MICROSCOPY
e8h3eA1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ligands: NAG,Q83 ; ELECTRON MICROSCOPY
e8h3eB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ligands: NAG,Q83 ; ELECTRON MICROSCOPY
e8h3eC3[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein,Fibritin ; ligands: NAG,Q83 ; ELECTRON MICROSCOPY
e8h3nA4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iosA3[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iosB3[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8iosC1[C:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8cwkC1[C:333-531] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike protein S1 ; ligands: GOL,NAG ; X-RAY DIFFRACTION 2.3680Å
e7yv8B1[B:332-528] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8sphF1[F:331-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.706Å
e8gf2A1[A:334-528] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; X-RAY DIFFRACTION 2.850Å
e7yr4D1[D:334-528] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8edfA1[A:334-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; X-RAY DIFFRACTION 3.4Å
e8fxcE1[E:334-527] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8eqfA1[A:326-519] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike protein S1 ; ELECTRON MICROSCOPY
e8h5uC1[C:334-532] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; X-RAY DIFFRACTION 2.40Å
e8gsbA1[A:338-517] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8dt8A4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8epqA4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8bonB4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8eljA4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e7y71A1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e7y20B2[B:329-454,B:491-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8a95A4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e7ybkB4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e7xy3A4[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e7uklB4[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8d55A1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e7yc5A1[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8cimA1[A:326-526] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ligands: NAG ; ELECTRON MICROSCOPY
e7ybjA3[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e7ybmA3[A:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8ajaA2[A:321-503] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8ajlA2[A:323-522] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8gnhB2[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY
e8p9yB2[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8tazB1[B:329-529] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ohnA4[A:307-611] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e7ymtA3[A:353-591] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8sakA4[A:357-595] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NAG ; ELECTRON MICROSCOPY
e8hc6C1[C:322-588] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike protein S1 ; ligands: NAG ; ELECTRON MICROSCOPY
e8hc7A1[A:322-588] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike protein S1 ; ligands: NAG ; 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.
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