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




Representatives:
e1xbiA1[A:2-116]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
50S ribosomal protein L7Ae ; ligands: EPE ; X-RAY DIFFRACTION 1.44Å
e2bo1A1[A:1-100]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH
50S RIBOSOMAL PROTEIN L30E ; ligands: SO4 ; X-RAY DIFFRACTION 1.7Å
e7wu0M1[M:10-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8b5lc1[c:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8b6cc1[c:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7tm3c1[c:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eL30 ; ELECTRON MICROSCOPY
e7tutc1[c:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eL30 ; ELECTRON MICROSCOPY
e7qggSM1[SM:15-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7r4xM1[M:14-126] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7wttM1[M:14-129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7wtuM1[M:14-129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7wtvM1[M:14-129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ligands: ZN ; ELECTRON MICROSCOPY
e7wtwM1[M:14-129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7zjwB1[B:429-476,B:625-780] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SECIS Binding Protein 2 ; ELECTRON MICROSCOPY
e8br8Ld1[Ld:2-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8brmLd1[Ld:7-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8bsiLd1[Ld:9-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8bsjLd1[Ld:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8btdLd1[Ld:12-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8btrLd1[Ld:2-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L30 ; ELECTRON MICROSCOPY
e8br3LCC1[LCC:10-108] Image Pymol Jmol Links: PDB, SCOP, CATH
e8bqdAY1[AY:9-104] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8bqxAY1[AY:9-104] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8hfrcC1[cC:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7uooc1[c:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7uqbc1[c:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7uqzc1[c:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7v08c1[c:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8btkBc1[Bc:2-109] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eL30 ; ELECTRON MICROSCOPY
e8g5yLc1[Lc:9-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ligands: MET,MG ; ELECTRON MICROSCOPY
e8g5zLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8g60Lc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eL30 ; ELECTRON MICROSCOPY
e8g61Lc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8g6jLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8glpLc1[Lc:9-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ligands: MET,MG ; ELECTRON MICROSCOPY
e7xnxLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e7xnyLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8i9xLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e8i9yLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e8i9zLc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e8ia0Lc1[Lc:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e7z3nLc1[Lc:10-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e7z3oLc1[Lc:10-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein l30-like protein ; ELECTRON MICROSCOPY
e8bqdD1[D:23-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8bqxD1[D:23-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8cahD1[D:23-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8casF1[F:23-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8btkAl1[Al:9-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8br3SM01[SM0:14-128] Image Pymol Jmol Links: PDB, SCOP, CATH
e8g5ySM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8g5zSM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eS12 ; ELECTRON MICROSCOPY
e8g60SM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eS12 ; ELECTRON MICROSCOPY
e8g61SM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8g6jSM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8glpSM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7xnxSM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7xnySM1[SM:11-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7z3nSM1[SM:25-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e7z3oSM1[SM:25-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8cbjM1[M:18-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8azwP1[P:14-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8b2lP31[P3:14-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30-like ; ELECTRON MICROSCOPY
e8hkuL30E1[L30E:5-98] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hkyL30E1[L30E:5-98] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8hl2L30E1[L30E:5-98] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L30e ; ELECTRON MICROSCOPY
e8hl5L30E1[L30E:5-98] Image Pymol Jmol Links: PDB, SCOP, CATH
; ELECTRON MICROSCOPY
e8bhfN31[N3:14-130] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8p5dLCC1[LCC:10-108] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8eubAc1[Ac:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ccsO1[O:9-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8fkyLO1[LO:13-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8p2kBc1[Bc:2-109] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8idtE1[E:9-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8auvC1[C:26-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
eS12 (40S ribosomal protein S12) ; ELECTRON MICROSCOPY
e8b2lC11[C1:26-142] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8eubBM1[BM:20-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8q5iAD1[AD:11-106] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
; ELECTRON MICROSCOPY
e8p2kAl1[Al:9-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8bpob21[b2:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8bhfP11[P1:10-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8a98d1[d:10-99] Image Pymol Jmol Links: PDB, SCOP, CATH
60S ribosomal protein L30 ; ELECTRON MICROSCOPY
e8t4sM1[M:10-130] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ppkM1[M:10-132] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
40S ribosomal protein S12 ; ELECTRON MICROSCOPY
e8p5dSM01[SM0:14-128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e2kg4A1[A:1-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth arrest and DNA-damage-inducible protein GADD45 alpha ; SOLUTION NMR
e3cg6B2[B:18-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth arrest and DNA-damage-inducible 45 gamma ; X-RAY DIFFRACTION 1.7Å
e3cg6A2[A:16-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Growth arrest and DNA-damage-inducible 45 gamma ; X-RAY DIFFRACTION 1.7Å
e3ffmA1[A:15-159] Image Pymol Jmol Links: PDB, SCOP, CATH
Growth arrest and DNA-damage-inducible protein GADD45 gamma ; X-RAY DIFFRACTION 2.3Å
e2walA1[A:11-159] Image Pymol Jmol Links: PDB, SCOP, CATH
GROWTH ARREST AND DNA-DAMAGE-INDUCIBLE PROTEIN GADD45 GAMMA ; ligands: MLA ; X-RAY DIFFRACTION 2.30Å
e2walB2[B:11-159] Image Pymol Jmol Links: PDB, SCOP, CATH
GROWTH ARREST AND DNA-DAMAGE-INDUCIBLE PROTEIN GADD45 GAMMA ; X-RAY DIFFRACTION 2.30Å
Previous
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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