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:
e2j0181[8:2-65] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4y4o281[28:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: ARG,MG ; X-RAY DIFFRACTION 2.300Å
e4y4p181[18:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.500Å
e4y4p281[28:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.500Å
e6xywAD1[AD:110-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n1pLi1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: ATP ; ELECTRON MICROSCOPY
e7opei1[i:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k50E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7nsp31[3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7a0r31[3:2-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; X-RAY DIFFRACTION 3.300Å
e7abze1[e:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7o19B31[B3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7a0s31[3:2-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 3.210Å
e7ac7e1[e:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7acje1[e:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7acre1[e:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k51E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k52E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k53E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k54E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7k55E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7lv0E1[E:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n2cLi1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n2uLi1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n2vLi1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n30Li1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7n31Li1[Li:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7nso31[3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7nsq31[3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7o1aB31[B3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7o1cB31[B3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7oiz21[2:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7oj021[2:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7a1831[3:2-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 3.300Å
e7asm31[3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7asn31[3:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7asoj1[j:2-61] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7asp21[2:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7cpj31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7lvkl1[l:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7nwte1[e:2-65] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7p3k21[2:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjs31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjt31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pju31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjv31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7pjw31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjx31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjy31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7pjz31[3:1-64] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ELECTRON MICROSCOPY
e7rq8181[18:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.500Å
e7rq8281[28:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.500Å
e7rq9181[18:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.600Å
e7rq9281[28:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; X-RAY DIFFRACTION 2.600Å
e7s1gl1[l:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
e7s1hl1[l:2-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
50S ribosomal protein L35 ; ligands: MG ; ELECTRON MICROSCOPY
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