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:
e1feuA2[A:94-185] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; ligands: CD,MG ; X-RAY DIFFRACTION 2.3Å
e2zjrS3[S:89-175] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 2.91Å
e8fmwAX2[AX:100-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8fn2X2[X:100-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ELECTRON MICROSCOPY
e8ev61Z1[1Z:93-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.946Å
e8ev71Z2[1Z:93-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.890Å
e8fc12Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.500Å
e8fc22Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.500Å
e8fc32Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.600Å
e8fc42Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.450Å
e8fc52Z2[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.650Å
e8fc62Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.350Å
e8t8b2Z1[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.650Å
e8t8c2Z2[2Z:93-201] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.600Å
e8ev72Z2[2Z:93-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.890Å
e8fc21Z1[1Z:93-203] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.500Å
e8fc31Z2[1Z:93-203] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.600Å
e8fc51Z2[1Z:93-203] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.650Å
e8fc61Z1[1Z:93-203] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.350Å
e8t8c1Z2[1Z:93-203] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: ARG,MG ; X-RAY DIFFRACTION 2.600Å
e5ibbD51[D5:94-103,D5:123-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 2.960Å
e2b66Z2[Z:89-177] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e2b9nZ2[Z:89-177] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e2b9pZ2[Z:89-177] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e3cf5S2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.300Å
e3dllS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.5Å
e4io9S2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.2Å
e4ioaS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.2Å
e4iocS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.6Å
e3pioS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.2473Å
e3pipS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.45Å
e1pnuT2[T:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1pnyT2[T:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1vorW2[W:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1yl3V2[V:89-177] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e2zjpS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.700Å
e2zjqS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S RIBOSOMAL PROTEIN L25 ; X-RAY DIFFRACTION 3.3Å
e1voyW3[W:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1vouW3[W:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1vowW3[W:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e1vp0W3[W:89-173] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4v4pAV1[AV:89-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S general stress protein CTC (L25) ; X-RAY DIFFRACTION 5.50Å
e4wzoH82[H8:93-103,H8:123-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.300Å
e4u67S1[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.65Å
e5dm6S2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 2.90Å
e5dm7S1[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.00Å
e4wfnS2[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.54Å
e5e7kD51[D5:93-102,D5:123-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.200Å
e5el6D51[D5:93-102,D5:123-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.100Å
e5el7D52[D5:93-102,D5:123-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.050Å
e5e81D52[D5:93-103,D5:123-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 2.950Å
e5el4D52[D5:93-102,D5:123-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.150Å
e5el5D51[D5:93-102,D5:123-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.150Å
e4wceS2[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.510Å
e4wf9S2[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.400Å
e4wfaS2[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.400Å
e4wfbS1[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.430Å
e5dm8S1[S:89-175] Image Pymol Jmol Links: PDB, SCOP, CATH
e5jvgS1[S:89-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.350Å
e5jvhS1[S:89-179] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ligands: 6O1 ; X-RAY DIFFRACTION 3.580Å
e5hl7S1[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.550Å
e5hkvS1[S:98-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.64Å
e5nrgS2[S:98-176] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.442Å
e5o60W1[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5o61W1[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5v7qV2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5v93V2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5xymV2[V:103-183] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e6dziW1[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e6dzpW1[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5zebW2[W:103-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5zepW1[W:103-191] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e5zetW2[W:103-193] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7a0rS2[S:87-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.300Å
e7a0sS2[S:87-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.210Å
e7a18S2[S:87-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; X-RAY DIFFRACTION 3.300Å
e7mscV2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7mshV1[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7msmV2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7mszV1[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7mt2V2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7mt3V2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7mt7V1[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7s0sX2[X:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7f0dV2[V:101-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e8fr822[2:103-183] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7xamW1[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e7y41W2[W:103-195] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e8crxu1[u:98-181] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
e8cvmu1[u:98-181] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L25 ; ELECTRON MICROSCOPY
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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