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
Representatives:
e2qtvA1[A:2-44,A:391-523] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein SEC23 ; X-RAY DIFFRACTION 2.500Å
e1m2vB11[B:61-73,B:133-218,B:556-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
protein transport protein SEC24 ; X-RAY DIFFRACTION 2.75Å
e1m2vA7[A:2-45,A:392-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
protein transport protein SEC23 ; X-RAY DIFFRACTION 2.75Å
e3egdA13[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.7Å
e2nutA14[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.300Å
e3egxA14[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 3.3Å
e4bziM16[M:133-218,M:556-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC24P ; ELECTRON MICROSCOPY
e4bziE16[E:133-218,E:556-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC24P ; ELECTRON MICROSCOPY
e4bziL16[L:133-218,L:556-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC24P ; ELECTRON MICROSCOPY
e1pcxA3[A:133-215,A:553-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24 ; X-RAY DIFFRACTION 2.5Å
e1pd1A3[A:133-215,A:553-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24 ; X-RAY DIFFRACTION 2.6Å
e3efoA4[A:3-49,A:393-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN TRANSPORT PROTEIN SEC23A ; X-RAY DIFFRACTION 2.7Å
e3eg9A2[A:3-49,A:393-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN TRANSPORT PROTEIN SEC23A ; X-RAY DIFFRACTION 3.0Å
e4bziA2[A:2-44,A:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC23P ; ELECTRON MICROSCOPY
e4bziD1[D:2-44,D:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC23P ; ELECTRON MICROSCOPY
e4bziG1[G:2-44,G:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SEC23P ; ELECTRON MICROSCOPY
e1m2oA2[A:2-44,A:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
protein transport protein SEC23 ; X-RAY DIFFRACTION 2.50Å
e1m2oC4[C:2-44,C:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
protein transport protein SEC23 ; X-RAY DIFFRACTION 2.50Å
e2nupA4[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.600Å
e5kyuA5[A:3-49,A:393-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 3.5Å
e5kyuB5[B:267-346,B:687-781] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24D ; X-RAY DIFFRACTION 3.5Å
e5vnjA3[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.8Å
e5vnlA1[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.394Å
e5vnmA3[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.765Å
e5vnnA5[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.5Å
e5vneA5[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.698Å
e5vnfA1[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.4Å
e5vngA1[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.6Å
e5vnhA1[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.6Å
e5vniA5[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.7876Å
e5vnkA2[A:3-50,A:394-517] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec23A ; X-RAY DIFFRACTION 2.55Å
e5vneB3[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.698Å
e5vnfB3[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.4Å
e5vngB3[B:347-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.6Å
e5vnhB5[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.6Å
e5vniB3[B:348-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.7876Å
e5vnjB3[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.8Å
e5vnkB5[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.55Å
e5vnlB2[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; ligands: CLT ; X-RAY DIFFRACTION 2.394Å
e5vnmB3[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; ligands: CLT ; X-RAY DIFFRACTION 2.765Å
e5vnnB2[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; ligands: CLT ; X-RAY DIFFRACTION 2.5Å
e5vnoB3[B:346-415,B:744-838] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein Sec24A ; X-RAY DIFFRACTION 2.9Å
e6gniE3[E:133-218,E:556-646] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein SEC24 ; ELECTRON MICROSCOPY
e6gniA5[A:2-44,A:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein SEC23 ; ELECTRON MICROSCOPY
e6zgaA4[A:2-44,A:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein SEC23 ; ELECTRON MICROSCOPY
e6zgaE2[E:2-44,E:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Protein transport protein SEC23 ; ELECTRON MICROSCOPY
e8bshA3[A:1-44,A:391-523] Image Pymol Jmol Links: PDB, SCOP, CATH
Protein transport protein SEC23 ; ELECTRON MICROSCOPY
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
some similarity with Ig fold
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
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