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:
e1vqoL1[L:1-150] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L15P ; ligands: CL,NA,SR ; X-RAY DIFFRACTION 2.2Å
e8agwN1[N:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: SPD ; ELECTRON MICROSCOPY
e8agxN1[N:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: SPD ; ELECTRON MICROSCOPY
e8agzN1[N:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: SPD ; ELECTRON MICROSCOPY
e8bipLa1[La:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: MG ; ELECTRON MICROSCOPY
e8bjqLa1[La:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: MG ; ELECTRON MICROSCOPY
e7zpqBZ1[BZ:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7zrsBZ1[BZ:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7zs5Bb1[Bb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7zuwBZ1[BZ:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7zuxEZ1[EZ:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e8euga1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e8euia1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e7qcaLAA1[LAA:1-147] Image Pymol Jmol Links: PDB, SCOP, CATH
uL15 LAA ; ligands: K ; ELECTRON MICROSCOPY
e7qjhLAA1[LAA:1-147] Image Pymol Jmol Links: PDB, SCOP, CATH
e7qjhKAA1[KAA:1-147] Image Pymol Jmol Links: PDB, SCOP, CATH
e8b5la1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG ; ELECTRON MICROSCOPY
e8b6ca1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG ; ELECTRON MICROSCOPY
e7qggb1[b:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG ; ELECTRON MICROSCOPY
e7tm3a1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL15 ; ligands: MG ; ELECTRON MICROSCOPY
e7tuta1[a:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL15 ; ligands: MG ; ELECTRON MICROSCOPY
e7zjwLd1[Ld:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG,SER ; ELECTRON MICROSCOPY
e8esqa1[a:69-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e8etca1[a:2-15,a:69-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e8etga1[a:2-15,a:69-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e8etja1[a:2-15,a:69-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-A ; ELECTRON MICROSCOPY
e7u0ha1[a:58-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e8a3dU1[U:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: K,MG ; ELECTRON MICROSCOPY
e8bqdAR1[AR:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e8bqxAR1[AR:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e8hfraw1[aw:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH
60S ribosomal protein L28 ; ligands: MG ; ELECTRON MICROSCOPY
e7z3nLa1[La:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-like protein ; ligands: MG ; ELECTRON MICROSCOPY
e7z3oLa1[La:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28-like protein ; ELECTRON MICROSCOPY
e8br3LAA1[LAA:1-147] Image Pymol Jmol Links: PDB, SCOP, CATH
e8btkBa1[Ba:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG,SPD ; ELECTRON MICROSCOPY
e7uooa1[a:58-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7uqba1[a:58-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7uqza1[a:58-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e7v08a1[a:58-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ELECTRON MICROSCOPY
e8br8Lb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8brmLb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8bsiLb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8bsjLb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8btdLb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8btrLb1[Lb:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L27a ; ELECTRON MICROSCOPY
e8g5yLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: K,MET,SPD ; ELECTRON MICROSCOPY
e8g5zLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: K,MET,MG,PHE,SPD ; ELECTRON MICROSCOPY
e8g60La1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL15 ; ligands: MET,MG,PHE,SPD ; ELECTRON MICROSCOPY
e8g61La1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MET,MG,SPD ; ELECTRON MICROSCOPY
e8g6jLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: K,MET,MG,PHE,SPD ; ELECTRON MICROSCOPY
e8glpLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: K,MET,MG,SPD ; ELECTRON MICROSCOPY
e7xnxLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27 ; ligands: MG ; ELECTRON MICROSCOPY
e7xnyLa1[La:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG ; ELECTRON MICROSCOPY
e8hkuL15P1[L15P:39-144] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hkyL15P1[L15P:39-144] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hl2L15P1[L15P:39-144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L15 ; ELECTRON MICROSCOPY
e8hl5L15P1[L15P:39-144] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hkuL18E1[L18E:6-117] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hkyL18E1[L18E:6-117] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hl2L18E1[L18E:6-117] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L18e ; ELECTRON MICROSCOPY
e8hl5L18E1[L18E:6-117] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8eubAa1[Aa:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: MG ; ELECTRON MICROSCOPY
e8ccsM1[M:2-149] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L28 ; ligands: SPD ; ELECTRON MICROSCOPY
e8q5iAB1[AB:2-149] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ligands: MG,SPD ; ELECTRON MICROSCOPY
e8azwf1[f:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: K,SPD ; ELECTRON MICROSCOPY
e8b2lf31[f3:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL15 (60S ribosomal protein L27a) ; ligands: K,SPD ; ELECTRON MICROSCOPY
e8p5dLAA1[LAA:1-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8bpoZ21[Z2:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: MG ; ELECTRON MICROSCOPY
e8p2kBa1[Ba:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG,SPD,UNX ; ELECTRON MICROSCOPY
e8bhfN11[N1:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: MG ; ELECTRON MICROSCOPY
e8a98L1[L:2-145] Image Pymol Jmol Links: PDB, SCOP, CATH
Putative 60S ribosomal protein L27A/L29 ; ELECTRON MICROSCOPY
e8fkpLK1[LK:2-17,LK:57-148] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ligands: MG ; ELECTRON MICROSCOPY
e8fl2LK1[LK:2-25,LK:56-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8fl6LK1[LK:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8idtL1[L:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ir1L1[L:2-21,L:56-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e5aj0Aa1[Aa:2-148] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L27a ; ligands: MG ; ELECTRON MICROSCOPY
Previouse1vqoO1[O:1-115] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L18E ; ligands: CD,CL ; X-RAY DIFFRACTION 2.2Å
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