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
Representatives:
e3d0rB2[B:-6-199] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein CalG3 ; X-RAY DIFFRACTION 1.680Å
e4g2tA2[A:0-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SsfS6 ; ligands: TYD ; X-RAY DIFFRACTION 2.400Å
e2p6pB2[B:1-198] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase ; ligands: GOL ; X-RAY DIFFRACTION 1.88Å
e4rifA2[A:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog ; ligands: 3R2 ; X-RAY DIFFRACTION 1.85Å
e4riiA2[A:1-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog,Glycosyl transferase ; ligands: MG,TYD ; X-RAY DIFFRACTION 2.0Å
e3wadB2[B:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH
Glycosyltransferase ; X-RAY DIFFRACTION 2.000Å
e2yjnA2[A:19-255] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLYCOSYLTRANSFERASE ; X-RAY DIFFRACTION 3.10Å
e3d0qA3[A:-2-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein CalG3 ; ligands: MPO ; X-RAY DIFFRACTION 2.79Å
e3d0qB2[B:-2-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein CalG3 ; ligands: MPO ; X-RAY DIFFRACTION 2.79Å
e3d0rA2[A:-2-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein CalG3 ; ligands: PE4 ; X-RAY DIFFRACTION 1.680Å
e3otiA3[A:-3-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CalG3 ; ligands: C0T,CL,TYD ; X-RAY DIFFRACTION 1.597Å
e3otiB2[B:-3-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CalG3 ; ligands: C0T,CL,TYD ; X-RAY DIFFRACTION 1.597Å
e4ambA3[A:12-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SNOGD ; X-RAY DIFFRACTION 2.62Å
e4ambB2[B:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SNOGD ; ligands: DUD ; X-RAY DIFFRACTION 2.62Å
e4amgA2[A:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SNOGD ; X-RAY DIFFRACTION 2.59Å
e4amgB3[B:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SNOGD ; X-RAY DIFFRACTION 2.59Å
e4an4A3[A:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLYCOSYL TRANSFERASE ; X-RAY DIFFRACTION 2.70Å
e4an4B2[B:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLYCOSYL TRANSFERASE ; ligands: DUD ; X-RAY DIFFRACTION 2.70Å
e4an4C3[C:11-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLYCOSYL TRANSFERASE ; X-RAY DIFFRACTION 2.70Å
e4an4D2[D:12-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GLYCOSYL TRANSFERASE ; ligands: DUD ; X-RAY DIFFRACTION 2.70Å
e4fzrA2[A:0-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SsfS6 ; X-RAY DIFFRACTION 2.400Å
e2p6pA3[A:1-198] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase ; ligands: GOL ; X-RAY DIFFRACTION 1.88Å
e4rieA2[A:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog ; X-RAY DIFFRACTION 2.16Å
e4rieB3[B:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog ; X-RAY DIFFRACTION 2.16Å
e4rifB2[B:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog ; ligands: 3R2 ; X-RAY DIFFRACTION 1.85Å
e4rigA2[A:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase ; X-RAY DIFFRACTION 1.9Å
e4rigB3[B:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase ; ligands: MG ; X-RAY DIFFRACTION 1.9Å
e4rihA2[A:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog,Glycosyl transferase ; ligands: 3R2 ; X-RAY DIFFRACTION 2.22Å
e4rihB3[B:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog,Glycosyl transferase ; ligands: 3R2,MG ; X-RAY DIFFRACTION 2.22Å
e4riiB2[B:1-199] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyl transferase homolog,Glycosyl transferase ; ligands: TYD ; X-RAY DIFFRACTION 2.0Å
e3wadA3[A:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH
Glycosyltransferase ; X-RAY DIFFRACTION 2.000Å
e3wagA3[A:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH
GLYCOSYLTRANSFERASE ; ligands: PO4,TYD ; X-RAY DIFFRACTION 2.1Å
e3wagB3[B:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH
GLYCOSYLTRANSFERASE ; ligands: PO4,TYD ; X-RAY DIFFRACTION 2.1Å
e7yp3A1[A:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp3B2[B:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,ELO,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp3C1[C:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ELO,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp3D1[D:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,ELO ; X-RAY DIFFRACTION 2.100Å
e7yp3E2[E:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,ELO,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp3F1[F:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,ELO,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp3G2[G:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: ACT,GOL ; X-RAY DIFFRACTION 2.100Å
e7yp4A1[A:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR ; X-RAY DIFFRACTION 3.100Å
e7yp4B1[B:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR ; X-RAY DIFFRACTION 3.100Å
e7yp4C1[C:0-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; X-RAY DIFFRACTION 3.100Å
e7yp5A2[A:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR,TYD ; X-RAY DIFFRACTION 2.330Å
e7yp5B2[B:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR,TYD ; X-RAY DIFFRACTION 2.330Å
e7yp6A1[A:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR,UDP ; X-RAY DIFFRACTION 2.600Å
e7yp6B1[B:-1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; ligands: PGR,UDP ; X-RAY DIFFRACTION 2.600Å
e7yp6C2[C:0-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Glycosyltransferase ; X-RAY DIFFRACTION 2.600Å
e4ldpA2[A:-1-62,A:99-234] Image Pymol Jmol Links: PDB, SCOP, CATH
NDP-forosamyltransferase ; X-RAY DIFFRACTION 2.5Å
e4ldpB2[B:-1-59,B:99-234] Image Pymol Jmol Links: PDB, SCOP, CATH
NDP-forosamyltransferase ; X-RAY DIFFRACTION 2.5Å
e3otgA2[A:-2-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CalG1 ; ligands: CL,TYD ; X-RAY DIFFRACTION 2.080Å
e3othA2[A:-6-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CalG1 ; ligands: CLJ,TYD ; X-RAY DIFFRACTION 2.300Å
e3othB2[B:1-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CalG1 ; ligands: CLJ,TYD ; X-RAY DIFFRACTION 2.300Å
e3uykA2[A:0-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; X-RAY DIFFRACTION 1.70Å
e4leiA2[A:-1-62,A:99-234] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-forosamyltransferase ; ligands: TYD ; X-RAY DIFFRACTION 3.15Å
e4leiB2[B:-1-59,B:98-234] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-forosamyltransferase ; ligands: TYD ; X-RAY DIFFRACTION 3.15Å
e3tsaA3[A:0-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; X-RAY DIFFRACTION 1.70Å
e3tsaB2[B:1-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; ligands: GLC ; X-RAY DIFFRACTION 1.70Å
e3uykB2[B:1-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; ligands: 0CX,BGC ; X-RAY DIFFRACTION 1.70Å
e3uylA3[A:0-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; ligands: TYD ; X-RAY DIFFRACTION 1.85Å
e3uylB2[B:1-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NDP-rhamnosyltransferase ; ligands: GLC,TYD ; X-RAY DIFFRACTION 1.85Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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