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
looks like an elaborated ferredoxin
contains a HTH motif
Representatives:
e1rl6A1[A:7-81] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (RIBOSOMAL PROTEIN L6) ; X-RAY DIFFRACTION 2.0Å
e8eugH2[H:4-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8euiH2[H:5-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8eupH1[H:4-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8euyH1[H:4-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8ev3H1[H:4-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8akng2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8am9g1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8anag2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8ap4g1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8ayeg1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8b0xg1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8b7yO2[O:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8eiug2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8ekcG1[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7q4kBG1[BG:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7qq3O1[O:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7ylaO2[O:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8a57K1[K:9-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8a5iK2[K:9-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8a63K2[K:9-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8cvj1H1[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.400Å
e8cvj2H2[2H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.400Å
e8cvk1H1[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.500Å
e8cvk2H2[2H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.500Å
e8cvl1H2[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.300Å
e8cvl2H1[2H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.300Å
e8ekb1H2[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.700Å
e8ekb2H2[2H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 2.700Å
e8b5lH2[H:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8b6cH1[H:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7tm3H2[H:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 ; ELECTRON MICROSCOPY
e7tutH2[H:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 ; ELECTRON MICROSCOPY
e7zjwLK1[LK:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8a3do2[o:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7qggJ2[J:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7m5dF1[F:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8bqdAD2[AD:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RPL9A isoform 1 ; ELECTRON MICROSCOPY
e8bqxAD1[AD:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8br3LH02[LH0:2-84] Image Pymol Jmol Links: PDB, SCOP, CATH
e8hfrIb1[Ib:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8i9tLH1[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8i9vLH1[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8i9wLH1[LH:1-122] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8i9xLH1[LH:1-122] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8i9yLH1[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8i9zLH1[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e8ia0LH1[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l9-like protein ; ELECTRON MICROSCOPY
e7uooH1[H:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e7uqbH1[H:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e7uqzH1[H:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e7v08H1[H:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e7z3nLH2[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 ; ELECTRON MICROSCOPY
e7z3oLH2[LH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 ; ELECTRON MICROSCOPY
e8a3lg2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8fizBJ1[BJ:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8g6wg2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8g6xg2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8g6yg1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7ztaL0611[L061:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8g5yLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8g5zLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8g60LH1[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 ; ELECTRON MICROSCOPY
e8g61LH1[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8g6jLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8glpLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ligands: MET,MG ; ELECTRON MICROSCOPY
e7xnxLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7xnyLH2[LH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8br8LJ2[LJ:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8brmLJ2[LJ:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8bsiLJ1[LJ:3-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8bsjLJ1[LJ:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8btdLJ2[LJ:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8btrLJ1[LJ:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L6 ; ELECTRON MICROSCOPY
e8btkBH1[BH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8crxg2[g:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8cvmg2[g:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uvvG2[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uvwG2[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uvxG2[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uvyG2[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uvzG1[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7uw1G2[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8fomRH1[RH:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 3.400Å
e8fomYH1[YH:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 3.400Å
e8fonRH2[RH:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 3.500Å
e8fonYH2[YH:3-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; X-RAY DIFFRACTION 3.500Å
e8fr8P2[P:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7xamG2[G:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e7y41G1[G:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8buuG1[G:2-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8azwu1[u:1-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8b2lu32[u3:1-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
uL6 (60S ribosomal protein L9) ; ELECTRON MICROSCOPY
e8hkuAL6P1[AL6P:4-88] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hkyAL6P1[AL6P:4-88] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hl2AL6P1[AL6P:4-88] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L6 ; ELECTRON MICROSCOPY
e8hl5AL6P2[AL6P:4-88] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8p5dLH02[LH0:2-84] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8eubAH1[AH:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ccsLL2[LL:1-85] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9-A ; ELECTRON MICROSCOPY
e8q5iq2[q:1-85] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ELECTRON MICROSCOPY
e8a98E2[E:2-86] Image Pymol Jmol Links: PDB, SCOP, CATH
Putative 60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8cgkg2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8camg2[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8cgvg1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8bf7E2[E:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e7y7cg1[g:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8fkrSG2[SG:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8idtI2[I:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8bpoH22[H2:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8p2kBH1[BH:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L9 ; ELECTRON MICROSCOPY
e8bhfq31[q3:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8fc11H1[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.500Å
e8t8b1H2[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.650Å
e8fc41H1[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.450Å
e8ev61H2[1H:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.946Å
e8sylG1[G:2-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
Previouse1rl6A2[A:82-170] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (RIBOSOMAL PROTEIN L6) ; X-RAY DIFFRACTION 2.0Å
e1vqoE1[E:1-79] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L6P ; ligands: CL ; X-RAY DIFFRACTION 2.2Å
e1vqoE2[E:80-172] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L6P ; X-RAY DIFFRACTION 2.2Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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