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
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




Representatives:
e1o98A1[A:2-76,A:311-510]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
2,3-BISPHOSPHOGLYCERATE-INDEPENDENT PHOSPHOGLYCERATE MUTASE ; ligands: 2PG,MN,SO4 ; X-RAY DIFFRACTION 1.4Å
e1ejjA1[A:3-76,A:311-510] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PHOSPHOGLYCERATE MUTASE ; ligands: 3PG,MN ; X-RAY DIFFRACTION 1.9Å
e1eqjA3[A:3-76,A:311-510] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PHOSPHOGLYCERATE MUTASE ; ligands: 2PG,MN ; X-RAY DIFFRACTION 1.7Å
e2ifyA3[A:2-75,A:310-509] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN ; X-RAY DIFFRACTION 2.38Å
e3igyB2[B:4-89,B:332-552] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cofactor-independent phosphoglycerate mutase ; ligands: 2PG,3PG,CO,NA ; X-RAY DIFFRACTION 2.00Å
e3igzB3[B:4-89,B:332-552] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cofactor-independent phosphoglycerate mutase ; ligands: 2PG,3PG,CO,NA ; X-RAY DIFFRACTION 1.900Å
e4my4A1[A:3-76,A:305-505] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN ; X-RAY DIFFRACTION 2.00Å
e4nwxA2[A:3-76,A:305-505] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: DTT,MN ; X-RAY DIFFRACTION 2.01Å
e1o99A1[A:2-76,A:311-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-BISPHOSPHOGLYCERATE-INDEPENDENT PHOSPHOGLYCERATE MUTASE ; ligands: 2PG,MN,SO4 ; X-RAY DIFFRACTION 2.65Å
e4qaxA2[A:3-76,A:305-505] Image Pymol Jmol Links: PDB, SCOP, CATH
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN ; X-RAY DIFFRACTION 2.00Å
e3nvlB1[B:3-88,B:331-551] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: CO ; X-RAY DIFFRACTION 2.300Å
e5kglA1[A:20-100,A:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN,SO4,ZN ; X-RAY DIFFRACTION 2.450Å
e5kglB2[B:20-100,B:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN,SO4,ZN ; X-RAY DIFFRACTION 2.450Å
e5kgmA1[A:20-100,A:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: CL,MN,ZN ; X-RAY DIFFRACTION 2.950Å
e5kgmB1[B:20-100,B:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: CL,MN,ZN ; X-RAY DIFFRACTION 2.950Å
e5kgnA2[A:20-100,A:334-549] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: CL,MG,MN,ZN ; X-RAY DIFFRACTION 1.950Å
e5kgnB2[B:19-100,B:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: CL,MG,MN,ZN ; X-RAY DIFFRACTION 1.950Å
e5vpuA2[A:6-81,A:311-514] Image Pymol Jmol Links: PDB, SCOP, CATH
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: 3PG,ACT,EDO,MN ; X-RAY DIFFRACTION 1.500Å
e4nwjA3[A:2-76,A:295-505] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN ; X-RAY DIFFRACTION 2.01Å
e7kngB1[B:20-100,B:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: NA,ZN ; X-RAY DIFFRACTION 2.100Å
e7kngA2[A:20-100,A:334-538] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: NA,ZN ; X-RAY DIFFRACTION 2.100Å
e7knfA2[A:27-100,A:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: HOA,NA,PG4,ZN ; X-RAY DIFFRACTION 1.800Å
e7knfB1[B:27-100,B:334-539] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: HOA,NA,PG4,ZN ; X-RAY DIFFRACTION 1.800Å
e7tl7A2[A:19-100,A:334-549] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: IMD,NA,ZN ; X-RAY DIFFRACTION 1.900Å
e7tl7B2[B:19-100,B:334-544] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: IMD,NA,ZN ; X-RAY DIFFRACTION 1.900Å
e7tl7C1[C:20-100,C:334-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: IMD,NA,ZN ; X-RAY DIFFRACTION 1.900Å
e7tl7D1[D:20-100,D:334-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: IMD,NA,ZN ; X-RAY DIFFRACTION 1.900Å
e7tl8A2[A:1-76,A:295-505] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
2,3-bisphosphoglycerate-independent phosphoglycerate mutase ; ligands: MN ; X-RAY DIFFRACTION 1.950Å
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