Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
X: Cytochrome c-like
H: Cytochrome c
T: Cytochrome c
F: Unmapped domains
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
Representatives:
e1h32A2[A:151-261]
nonrep
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DIHEME CYTOCHROME C ; ligands: EDO,HEC ; X-RAY DIFFRACTION 1.5Å
e3vrdA2[A:81-174]
* nonrep
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Flavocytochrome c heme subunit ; ligands: GOL,HEC,NO3 ; X-RAY DIFFRACTION 1.5Å
e2bh4X1[X:2-123]
* nonrep
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CYTOCHROME C-550 ; ligands: HEC ; X-RAY DIFFRACTION 1.55Å
e5z25A1[A:1-35]
* nonrep
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Cytochrome c552 ; X-RAY DIFFRACTION 1.7Å
e4b2nA1[A:15-349]
nonrep
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70 KDA PROTEIN ; ligands: EPE,HEM,OXY ; X-RAY DIFFRACTION 1.80Å
e4fa1A1[A:170-359]
* nonrep
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METHYLAMINE UTILIZATION PROTEIN MAUG ; ligands: CA,HEC,NA ; X-RAY DIFFRACTION 2.18Å
e5mvoB1[B:1-113,B:228-259]
nonrep
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FoxE ; ligands: CU,HEC,PO4 ; X-RAY DIFFRACTION 2.67Å
e5mvoB2[B:114-227]
nonrep
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FoxE ; ligands: HEC,PO4 ; X-RAY DIFFRACTION 2.67Å
circular permutation
e5c2vA3[A:654-808]
nonrep
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HYDRAZINE SYNTHASE ALPHA SUBUNIT ; ligands: BET,CA,HEC ; X-RAY DIFFRACTION 2.7Å
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