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
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




Representatives:
e6mx4A1[A:384-437]
* nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
E1 ; ELECTRON MICROSCOPY
e6xo4A2[A:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xo4D1[D:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xo4G3[G:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xo4J3[J:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xobA1[A:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xobD1[D:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xobG3[G:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e6xobJ3[J:384-441] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Togavirin ; ELECTRON MICROSCOPY
e7fd2A3[A:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Envelope glycoprotein 1 ; ligands: CLR,PCW,PLM,STE ; ELECTRON MICROSCOPY
e7fd2E3[E:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Envelope glycoprotein 1 ; ligands: CLR,PCW,PLM,STE ; ELECTRON MICROSCOPY
e7fd2I3[I:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Envelope glycoprotein 1 ; ligands: CLR,PCW,PLM,STE ; ELECTRON MICROSCOPY
e7fd2M3[M:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Envelope glycoprotein 1 ; ligands: CLR,PCW,PLM,STE ; ELECTRON MICROSCOPY
e7v4tA3[A:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 glycoprotein ; ELECTRON MICROSCOPY
e7v4tE3[E:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 glycoprotein ; ELECTRON MICROSCOPY
e7v4tI3[I:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 glycoprotein ; ELECTRON MICROSCOPY
e7v4tM3[M:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 glycoprotein ; ELECTRON MICROSCOPY
e7wc2A3[A:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e7wc2D3[D:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e7wc2G3[G:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e7wc2J3[J:384-438] Image Pymol Jmol Links: PDB, SCOP, CATH
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e8dwwB1[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwwA1[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwwC2[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwwD3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwxA1[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwxB1[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwxC3[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwxD1[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwyA2[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwyB2[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwyC1[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8dwyD3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ewfG1[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8ewfK3[K:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8ewfO3[O:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e3j2wE1[E:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycoprotein E1 ; ELECTRON MICROSCOPY
e3j2wF1[F:1394-1439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycoprotein E1 ; ELECTRON MICROSCOPY
e3j2wG1[G:2394-2439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycoprotein E1 ; ELECTRON MICROSCOPY
e3j2wH1[H:3394-3439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycoprotein E1 ; ELECTRON MICROSCOPY
e5vu2E1[E:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 envelope glycoprotein ; ELECTRON MICROSCOPY
e5vu2F1[F:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 envelope glycoprotein ; ELECTRON MICROSCOPY
e5vu2G1[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 envelope glycoprotein ; ELECTRON MICROSCOPY
e5vu2H1[H:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 envelope glycoprotein ; ELECTRON MICROSCOPY
e6nk5A3[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk5B3[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk5C3[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk5D3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk6A3[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk6B3[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk6C3[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk6D3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk7A3[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk7B3[B:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk7C3[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e6nk7D3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7ko8B3[B:390-433] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7ko8E3[E:383-433] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7ko8H3[H:387-433] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7ko8L3[L:383-433] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvyF1[F:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvyA2[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvyP1[P:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvyK1[K:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvzD2[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvzG2[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvzJ3[J:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cvzA2[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw0D1[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw0G1[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw0J3[J:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw0A3[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2G3[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2A1[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2D3[D:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2g2[g:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2a2[a:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2d1[d:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2J3[J:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2M1[M:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2P3[P:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2j1[j:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2m3[m:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2p2[p:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2s1[s:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2v3[v:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw2y2[y:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3A1[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3C3[C:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3G3[G:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3E3[E:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3K1[K:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3I1[I:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3i1[i:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3g3[g:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3e2[e:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3W3[W:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3U3[U:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3Y2[Y:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3S3[S:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3c1[c:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3a3[a:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3Q1[Q:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3O2[O:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7cw3M2[M:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 glycoprotein ; ELECTRON MICROSCOPY
e7lihT3[T:382-435] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 protein ; ELECTRON MICROSCOPY
e7lihH3[H:382-435] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 protein ; ELECTRON MICROSCOPY
e7lihI3[I:382-435] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 protein ; ELECTRON MICROSCOPY
e7lihJ3[J:382-435] Image Pymol Jmol Links: PDB, SCOP, CATH
E1 protein ; ELECTRON MICROSCOPY
e8ihpB3[B:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e8ihpE3[E:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e8ihpH3[H:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e8ihpK3[K:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Spike glycoprotein E1 ; ELECTRON MICROSCOPY
e8ewfA3[A:394-439] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e6mx4D2[D:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6mx4G2[G:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6mx4J1[J:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6odfA1[A:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6odfC1[C:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6odfE3[E:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY
e6odfG1[G:384-437] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
E1 ; ELECTRON MICROSCOPY

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.