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
Representatives:
e2hbaA1[A:1-52] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ligands: CL,ZN ; X-RAY DIFFRACTION 1.250Å
e4y4o1I1[1I:1-55] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 2.300Å
e5hau1z6[1z:-66--8] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Chimera protein of 50S ribosomal protein L9 and Elongation factor G ; X-RAY DIFFRACTION 3.000Å
e5hau2z6[2z:-66--8] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Chimera protein of 50S ribosomal protein L9 and Elongation factor G ; X-RAY DIFFRACTION 3.000Å
e5j8bz5[z:-68--10] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GDPCP fused to the N-terminus of the ribosomal protein L9,Elongation factor 4 ; X-RAY DIFFRACTION 2.590Å
e4zsnRI1[RI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.6Å
e4zsnYI1[YI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.6Å
e5czpYI1[YI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.300Å
e5czpRI1[RI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.300Å
e5dfeYI1[YI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.09997551079Å
e5dfeRI1[RI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.09997551079Å
e5j30RI2[RI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.200Å
e5j30YI1[YI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.200Å
e5j3cRI1[RI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.040Å
e5j3cYI1[YI:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.040Å
e5lzaH2[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e5lzbH1[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e5lzcH1[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e5lzdH2[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e5lzeH1[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e5lzfH2[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e2rdoH1[H:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e4v48AF1[AF:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e6fkr1I2[1I:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.200Å
e6fkr2I2[2I:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 3.200Å
e7n1pLI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k50g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7nspH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7abzG2[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7o19BH2[BH:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7ac7G2[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7acjG2[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7acrG2[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k51g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k52g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k53g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k54g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7k55g1[g:1-53] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7lv0g1[g:1-57] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7n2cLI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7n2uLI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7n2vLI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7n30LI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7n31LI2[LI:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7nsoH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7nsqH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7o1aBH2[BH:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7o1cBH2[BH:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7oizh1[h:1-41] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7oj0h1[h:1-41] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7cpjH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7lvkP2[P:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7nwtG2[G:1-56] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7p3kh1[h:1-41] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjsH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjtH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjuH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjvH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjwH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjxH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjyH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7pjzH2[H:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7rq81I2[1I:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 2.500Å
e7rq82I2[2I:1-54] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 2.500Å
e7rq91I2[1I:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 2.600Å
e7rq92I2[2I:1-55] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; X-RAY DIFFRACTION 2.600Å
e7s1gP2[P:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
e7s1hP2[P:1-56] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L9 ; ELECTRON MICROSCOPY
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
looks like an elaborated ferredoxin
contains a HTH motif
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