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- PDB-2o9i: Crystal Structure of the Human Pregnane X Receptor LBD in complex... -

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Basic information

Entry
Database: PDB / ID: 2o9i
TitleCrystal Structure of the Human Pregnane X Receptor LBD in complex with an SRC-1 coactivator peptide and T0901317
Components
  • Nuclear Receptor Coactivator 1 isoform 3
  • Orphan nuclear receptor PXR
KeywordsTRANSCRIPTION / Nuclear Receptor / Pregnane X Receptor / PXR / T0901317
Function / homology
Function and homology information


NR1H2 & NR1H3 regulate gene expression to control bile acid homeostasis / NR1H3 & NR1H2 regulate gene expression linked to cholesterol transport and efflux / SUMOylation of transcription cofactors / Recycling of bile acids and salts / Synthesis of bile acids and bile salts / Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol / Synthesis of bile acids and bile salts via 27-hydroxycholesterol / Endogenous sterols / HATs acetylate histones / Regulation of lipid metabolism by PPARalpha ...NR1H2 & NR1H3 regulate gene expression to control bile acid homeostasis / NR1H3 & NR1H2 regulate gene expression linked to cholesterol transport and efflux / SUMOylation of transcription cofactors / Recycling of bile acids and salts / Synthesis of bile acids and bile salts / Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol / Synthesis of bile acids and bile salts via 27-hydroxycholesterol / Endogenous sterols / HATs acetylate histones / Regulation of lipid metabolism by PPARalpha / Cytoprotection by HMOX1 / Estrogen-dependent gene expression / nuclear retinoic acid receptor binding / labyrinthine layer morphogenesis / regulation of thyroid hormone receptor signaling pathway / positive regulation of transcription from RNA polymerase II promoter by galactose / positive regulation of female receptivity / intermediate filament cytoskeleton / xenobiotic transport / hypothalamus development / male mating behavior / steroid metabolic process / cellular response to Thyroglobulin triiodothyronine / estrous cycle / xenobiotic catabolic process / nuclear retinoid X receptor binding / response to retinoic acid / histone acetyltransferase activity / histone acetyltransferase / cellular response to hormone stimulus / positive regulation of adipose tissue development / peroxisome proliferator activated receptor signaling pathway / lactation / positive regulation of neuron differentiation / xenobiotic metabolic process / regulation of cellular response to insulin stimulus / cerebellum development / nuclear receptor coactivator activity / hippocampus development / response to progesterone / nuclear receptor binding / nuclear estrogen receptor binding / RNA polymerase II transcription regulatory region sequence-specific DNA binding / SUMOylation of intracellular receptors / mRNA transcription by RNA polymerase II / cerebral cortex development / Nuclear Receptor transcription pathway / RNA polymerase II transcription regulator complex / male gonad development / nuclear receptor activity / sequence-specific double-stranded DNA binding / response to estradiol / DNA-binding transcription activator activity, RNA polymerase II-specific / transcription regulator complex / transcription coactivator activity / cell differentiation / nuclear body / protein dimerization activity / DNA-binding transcription factor activity, RNA polymerase II-specific / positive regulation of apoptotic process / RNA polymerase II cis-regulatory region sequence-specific DNA binding / negative regulation of DNA-templated transcription / chromatin binding / protein-containing complex binding / regulation of DNA-templated transcription / positive regulation of gene expression / chromatin / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II / signal transduction / positive regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / nucleus / plasma membrane / cytosol
Similarity search - Function
Nuclear receptor coactivator 1 / Nuclear receptor coactivator, DUF1518 / Nuclear receptor coactivator, Ncoa-type, interlocking / Nuclear receptor coactivator, Ncoa-type, interlocking domain superfamily / Nuclear receptor coactivator, DUF1518 / Nuclear receptor coactivator / DUF1518 / Nuclear receptor coactivator, receptor-binding domain / Nuclear receptor coactivator / Steroid receptor coactivator ...Nuclear receptor coactivator 1 / Nuclear receptor coactivator, DUF1518 / Nuclear receptor coactivator, Ncoa-type, interlocking / Nuclear receptor coactivator, Ncoa-type, interlocking domain superfamily / Nuclear receptor coactivator, DUF1518 / Nuclear receptor coactivator / DUF1518 / Nuclear receptor coactivator, receptor-binding domain / Nuclear receptor coactivator / Steroid receptor coactivator / Unstructured region on nuclear receptor coactivator protein / PAS domain / : / Nuclear receptor coactivator, interlocking / helix loop helix domain / Myc-type, basic helix-loop-helix (bHLH) domain / Myc-type, basic helix-loop-helix (bHLH) domain profile. / Helix-loop-helix DNA-binding domain superfamily / PAS fold / PAS fold / PAS domain / PAS repeat profile. / PAS domain / Retinoid X Receptor / Retinoid X Receptor / PAS domain superfamily / Nuclear hormone receptor / Nuclear hormones receptors DNA-binding region signature. / Zinc finger, nuclear hormone receptor-type / Zinc finger, C4 type (two domains) / Nuclear hormone receptors DNA-binding domain profile. / c4 zinc finger in nuclear hormone receptors / Nuclear hormone receptor, ligand-binding domain / Nuclear hormone receptor-like domain superfamily / Ligand-binding domain of nuclear hormone receptor / Nuclear receptor (NR) ligand-binding (LBD) domain profile. / Ligand binding domain of hormone receptors / Zinc finger, NHR/GATA-type / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
Chem-444 / Nuclear receptor subfamily 1 group I member 2 / Nuclear receptor coactivator 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.8 Å
AuthorsXue, Y. / Redinbo, M.R.
CitationJournal: Bioorg.Med.Chem. / Year: 2007
Title: Crystal structure of the PXR-T1317 complex provides a scaffold to examine the potential for receptor antagonism.
Authors: Xue, Y. / Chao, E. / Zuercher, W.J. / Willson, T.M. / Collins, J.L. / Redinbo, M.R.
History
DepositionDec 13, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 30, 2007Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 30, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Orphan nuclear receptor PXR
B: Orphan nuclear receptor PXR
C: Nuclear Receptor Coactivator 1 isoform 3
D: Nuclear Receptor Coactivator 1 isoform 3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)72,0736
Polymers71,1104
Non-polymers9632
Water2,432135
1
A: Orphan nuclear receptor PXR
C: Nuclear Receptor Coactivator 1 isoform 3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,0363
Polymers35,5552
Non-polymers4811
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2100 Å2
ΔGint-13 kcal/mol
Surface area14980 Å2
MethodPISA
2
B: Orphan nuclear receptor PXR
D: Nuclear Receptor Coactivator 1 isoform 3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,0363
Polymers35,5552
Non-polymers4811
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2150 Å2
ΔGint-16 kcal/mol
Surface area14900 Å2
MethodPISA
3


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6180 Å2
ΔGint-44 kcal/mol
Surface area27940 Å2
MethodPISA
Unit cell
Length a, b, c (Å)83.979, 90.618, 105.725
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Orphan nuclear receptor PXR / Pregnane X receptor / Orphan nuclear receptor PAR1 / Steroid and xenobiotic receptor / SXR


Mass: 33676.918 Da / Num. of mol.: 2 / Fragment: Ligand Binding Domain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: NR1I2, PXR / Production host: Escherichia coli (E. coli) / References: UniProt: O75469
#2: Protein/peptide Nuclear Receptor Coactivator 1 isoform 3


Mass: 1878.203 Da / Num. of mol.: 2 / Fragment: Residues 625-639 / Source method: obtained synthetically / Details: The peptide was chemically synthesized. / References: UniProt: P70365*PLUS
#3: Chemical ChemComp-444 / N-(2,2,2-TRIFLUOROETHYL)-N-{4-[2,2,2-TRIFLUORO-1-HYDROXY-1-(TRIFLUOROMETHYL)ETHYL]PHENYL}BENZENESULFONAMIDE


Mass: 481.333 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C17H12F9NO3S
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 135 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.83 Å3/Da / Density % sol: 56.5 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / pH: 7.1
Details: 50 mM Imidizole, 10% 2-propanol (v/v), pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 295K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 22-ID / Wavelength: 1
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Sep 9, 2003
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.8→50 Å / Num. obs: 20332 / % possible obs: 97.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 2 / Redundancy: 5.8 % / Biso Wilson estimate: 67.2 Å2 / Rsym value: 0.094 / Net I/σ(I): 25.9
Reflection shellResolution: 2.8→2.9 Å / Redundancy: 5.4 % / Mean I/σ(I) obs: 5.1 / Num. unique all: 3134 / Rsym value: 0.281 / % possible all: 91.1

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Processing

Software
NameVersionClassification
CNS1.1refinement
CrystalClear(MSC/RIGAKU)data collection
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: pdb entry 1ILG

1ilg


Resolution: 2.8→50 Å / Rfactor Rfree error: 0.007 / Data cutoff high absF: 1172964.08 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 2 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.24 1029 5.1 %RANDOM
Rwork0.228 ---
obs0.228 20118 98.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 38.6396 Å2 / ksol: 0.317949 e/Å3
Displacement parametersBiso mean: 54.5 Å2
Baniso -1Baniso -2Baniso -3
1-4.01 Å20 Å20 Å2
2---1.86 Å20 Å2
3----2.15 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.38 Å0.34 Å
Luzzati d res low-5 Å
Luzzati sigma a0.33 Å0.29 Å
Refinement stepCycle: LAST / Resolution: 2.8→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4793 0 62 135 4990
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.008
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d20.1
X-RAY DIFFRACTIONc_improper_angle_d0.77
X-RAY DIFFRACTIONc_mcbond_it1.631.5
X-RAY DIFFRACTIONc_mcangle_it2.892
X-RAY DIFFRACTIONc_scbond_it22
X-RAY DIFFRACTIONc_scangle_it3.172.5
LS refinement shellResolution: 2.8→2.98 Å / Rfactor Rfree error: 0.029 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.341 143 4.4 %
Rwork0.299 3134 -
obs--98.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2dna-rna_rep.paramdna-rna.top
X-RAY DIFFRACTION3water.paramwater.top
X-RAY DIFFRACTION4ion.paramion.top
X-RAY DIFFRACTION5444.par444.top

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