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:
e1ox0A2[A:252-409] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Beta ketoacyl-acyl carrier protein synthase ; ligands: MG ; X-RAY DIFFRACTION 1.3Å
e2vbaA2[A:254-404] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE 1 ; ligands: P4T ; X-RAY DIFFRACTION 1.36Å
e1tqyB2[B:210-403] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Actinorhodin polyketide putative beta-ketoacyl synthase 2 ; X-RAY DIFFRACTION 2.00Å
e4kc5A2[A:3315-3496] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RhiE protein ; X-RAY DIFFRACTION 2.14Å
e2pffA2[A:1399-1744] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE SUBUNIT ALPHA ; X-RAY DIFFRACTION 4.0Å
e3hmjA5[A:1399-1745] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE SUBUNIT ALPHA ; ligands: CER ; X-RAY DIFFRACTION 4.0Å
e3zenD13[D:2834-3089] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4b3yB13[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4b3yC13[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjgC13[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e3zenE13[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e3zenF13[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjdA13[A:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjdB13[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjdC13[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjeD13[D:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjeE13[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjeF13[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjfE13[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjfF13[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjgA13[A:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4bjgB13[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB
e4v8lD2[D:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8lE2[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8lF2[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8lA2[A:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8lB2[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8lC2[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vA2[A:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vB2[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vC2[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vD2[D:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vE2[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8vF2[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wD2[D:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wE2[E:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wF2[F:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wA2[A:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wB2[B:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e4v8wC2[C:2834-3089] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TYPE-I FATTY ACID SYNTHASE ; ELECTRON MICROSCOPY
e6gjcA9[A:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6gjcB1[B:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6gjcC9[C:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6gjcD10[D:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6gjcE2[E:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6gjcF2[F:2840-3061] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase ; ELECTRON MICROSCOPY
e6u5tA4[A:1399-1747] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6u5uA1[A:1399-1747] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1A5[A:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1B3[B:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1D7[D:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1K5[K:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1F1[F:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ta1I1[I:1399-1745] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5A1[A:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5B4[B:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5C3[C:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5D5[D:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5E7[E:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql5F5[F:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ELECTRON MICROSCOPY
e6ql6A5[A:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql6B5[B:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql6C4[C:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql6D5[D:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql6E2[E:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql6F1[F:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: J8T ; ELECTRON MICROSCOPY
e6ql9D2[D:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: EDO,NA,PNS ; X-RAY DIFFRACTION 2.82Å
e6ql7A7[A:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7B6[B:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7C6[C:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7D4[D:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7E3[E:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7F7[F:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7a5[a:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7b6[b:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7c2[c:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7d5[d:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7e4[e:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql7f3[f:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; X-RAY DIFFRACTION 4.6Å
e6ql9A4[A:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: EDO,PNS ; X-RAY DIFFRACTION 2.82Å
e6ql9B5[B:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: ACT,EDO,NA,PNS ; X-RAY DIFFRACTION 2.82Å
e6ql9C3[C:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: ACT,EDO,NA,PNS ; X-RAY DIFFRACTION 2.82Å
e6ql9E1[E:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: EDO,NA,PNS ; X-RAY DIFFRACTION 2.82Å
e6ql9F6[F:1399-1746] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Fatty acid synthase subunit alpha ; ligands: EDO,PNS ; X-RAY DIFFRACTION 2.82Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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