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
Representatives:
e3j9mAR1[AR:67-308] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
mS22 ; ELECTRON MICROSCOPY
e8oisAR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e5aj3a1[a:65-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MITORIBOSOMAL PROTEIN MS22, MRPS22 ; ELECTRON MICROSCOPY
e5aj4Aa1[Aa:65-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MITORIBOSOMAL PROTEIN MS22, MRPS22 ; ELECTRON MICROSCOPY
e3jd5a1[a:65-353] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6gazAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e6gawAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e6neqa1[a:65-353] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6nf8a1[a:65-353] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6nu2AR1[AR:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6nu3AR1[AR:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6rw4R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6rw5R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6ydpAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e6ydwAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e6vlzAR1[AR:66-357] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6vmiAR1[AR:66-357] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zs9AR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zsaAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zsbAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zscAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zsdAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zseAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zsgAR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zm5AR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e6zm6AR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7a5fR61[R6:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7a5gR61[R6:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7a5iR61[R6:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7a5kR61[R6:67-308] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7nqhAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e7nqlAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e6zsfAR1[AR:67-315] Image Pymol Jmol Links: PDB, SCOP, CATH
e7l08AR1[AR:66-357] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7nsiAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e7og4AR1[AR:67-316] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7nsjAa1[Aa:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e7p2eR1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnxR1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnyR1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnzR1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7po0R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7po1R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7po2R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7po3R1[R:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7qi4AR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pntR1[R:63-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnuR1[R:63-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnvR1[R:63-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7pnwR1[R:63-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8cspR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8csqR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8csrR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8cssR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8cstR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8csuR1[R:66-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8oipAR1[AR:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e7qi6AR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8oinAR1[AR:88-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S22 ; ELECTRON MICROSCOPY
e8oirAR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e7qi5AR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
e8anyAR1[AR:64-358] Image Pymol Jmol Links: PDB, SCOP, CATH
28S ribosomal protein S22, mitochondrial ; ELECTRON MICROSCOPY
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