Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
X: Nuclear receptor ligand-binding domain
H: Nuclear receptor ligand-binding domain
T: Nuclear receptor ligand-binding domain
F: Hormone_recep
Representatives:
e1fcyA1[A:182-417]
nonrep
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RETINOIC ACID RECEPTOR GAMMA-1 ; ligands: 564,LMU ; X-RAY DIFFRACTION 1.30Å
e1ie9A1[A:118-423]
nonrep
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VITAMIN D3 RECEPTOR ; ligands: VDX ; X-RAY DIFFRACTION 1.4Å
e1t7rA1[A:669-918]
nonrep
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Androgen receptor ; ligands: DHT ; X-RAY DIFFRACTION 1.40Å
e1nq7A1[A:208-451]
nonrep
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NUCLEAR RECEPTOR ROR-BETA ; ligands: ARL ; X-RAY DIFFRACTION 1.5Å
e2e2rA1[A:234-456]
nonrep
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ESTROGEN-RELATED RECEPTOR GAMMA ; ligands: 2OH,GOL ; X-RAY DIFFRACTION 1.6Å
e1g2nA1[A:203-458]
nonrep
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ULTRASPIRACLE PROTEIN ; ligands: EPH ; X-RAY DIFFRACTION 1.65Å
e1oshA1[A:245-475]
nonrep
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Bile acid receptor ; ligands: FEX ; X-RAY DIFFRACTION 1.78Å
e2p54A1[A:202-468]
nonrep
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Peroxisome proliferator-activated receptor alpha ; ligands: 735 ; X-RAY DIFFRACTION 1.79Å
e2j7yA1[A:217-452]
nonrep
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ESTROGEN RECEPTOR BETA ; ligands: BCT,E3O,EDO,SO4 ; X-RAY DIFFRACTION 1.8Å
e1nrlA1[A:142-433]
nonrep
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Orphan nuclear receptor PXR ; ligands: SRL ; X-RAY DIFFRACTION 2.0Å
e1pq9A1[A:220-458]
nonrep
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Oxysterols receptor LXR-beta ; ligands: 44B,BNS ; X-RAY DIFFRACTION 2.1Å
e1pzlA1[A:137-369]
nonrep
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Hepatocyte nuclear factor 4-alpha ; ligands: MYR ; X-RAY DIFFRACTION 2.1Å
e1n46A1[A:211-461]
nonrep
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Thyroid hormone receptor Beta-1 ; ligands: PFA ; X-RAY DIFFRACTION 2.20Å
e1pduA1[A:319-548]
nonrep
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nuclear hormone receptor HR38 ; X-RAY DIFFRACTION 2.3Å
e1pk5A1[A:318-559]
nonrep
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ORPHAN NUCLEAR RECEPTOR NR5A2 ; X-RAY DIFFRACTION 2.4Å
e2r40D1[D:287-529]
nonrep
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Ecdysone Receptor ; ligands: 20E,FLC,SO4 ; X-RAY DIFFRACTION 2.402Å
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