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
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
Representatives:
e3j9mAY1[AY:276-383] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
mS31 ; ELECTRON MICROSCOPY
e5aj3h1[h:285-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MITORIBOSOMAL PROTEIN MS31, MRPS31 ; ELECTRON MICROSCOPY
e5aj4Ah1[Ah:285-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MITORIBOSOMAL PROTEIN MS31, MRPS31 ; ELECTRON MICROSCOPY
e3jd5h1[h:284-386] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6gazAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
mS31, MRPS31 ; ELECTRON MICROSCOPY
e6gawAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
mS31 ; ELECTRON MICROSCOPY
e6neqh1[h:284-386] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6nf8h1[h:284-386] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6nu2AY1[AY:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6nu3AY1[AY:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6ydpAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S31 ; ELECTRON MICROSCOPY
e6ydwAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S31 ; ELECTRON MICROSCOPY
e6vlzAY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6vmiAY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zs9AY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zsaAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zsbAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zscAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zsdAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zseAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zsgAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7a5fY61[Y6:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7a5gY61[Y6:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7a5iY61[Y6:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7a5kY61[Y6:276-383] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7nqhAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S31 ; ELECTRON MICROSCOPY
e7nqlAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial ribosomal protein S31 ; ELECTRON MICROSCOPY
e6zsfAY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH
e6rw4Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6rw5Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zm5AY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e6zm6AY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7l08AY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7nsiAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7og4AY1[AY:276-388] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7nsjAh1[Ah:268-387] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7p2eY1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pntY1[Y:265-384] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnuY1[Y:265-384] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnvY1[Y:265-384] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnwY1[Y:265-384] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnxY1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnyY1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7pnzY1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7po0Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7po1Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7po2Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7po3Y1[Y:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY
e7qi4AY1[AY:276-395] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
28S ribosomal protein S31, mitochondrial ; ELECTRON MICROSCOPY