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- PDB-1kx3: X-Ray Structure of the Nucleosome Core Particle, NCP146, at 2.0 A... -

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Basic information

Entry
Database: PDB / ID: 1kx3
TitleX-Ray Structure of the Nucleosome Core Particle, NCP146, at 2.0 A Resolution
Components
  • DNA (5'(ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGAATTCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT)3')
  • histone H2A.1
  • histone H2B.2
  • histone H3
  • histone H4
KeywordsSTRUCTURAL PROTEIN/DNA / NUCLEOSOME / CHROMATIN / HISTONE / PROTEIN-DNA INTERACTION / NUCLEOPROTEIN / SUPERCOILED DNA / NUCLEOSOME CORE / PROTEIN-DNA COMPLEX / STRUCTURAL PROTEIN-DNA COMPLEX
Function / homology
Function and homology information


DNA-templated transcription, initiation / nucleosome / protein heterodimerization activity / DNA binding / nucleoplasm / nucleus
Similarity search - Function
Histone, subunit A / Histone, subunit A / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A signature. / Histone H2A conserved site / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A ...Histone, subunit A / Histone, subunit A / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A signature. / Histone H2A conserved site / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / Centromere kinetochore component CENP-T histone fold / CENP-T/Histone H4, histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF) / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
Histone H2A type 1 / Histone H4 / Histone H2B 1.1 / : / DNA (> 100) / DNA (> 10) / DNA / Histone H3.2
Similarity search - Component
Biological speciesHomo sapiens (human)
Xenopus laevis (African clawed frog)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2 Å
AuthorsDavey, C.A. / Sargent, D.F. / Luger, K. / Maeder, A.W. / Richmond, T.J.
Citation
Journal: J.Mol.Biol. / Year: 2002
Title: Solvent Mediated Interactions in the Structure of the Nucleosome Core Particle at 1.9 A Resolution
Authors: Davey, C.A. / Sargent, D.F. / Luger, K. / Maeder, A.W. / Richmond, T.J.
#1: Journal: Nature / Year: 1997
Title: Crystal structure of the nucleosome core particle at 2.8 A resolution
Authors: Luger, K. / Maeder, A.W. / Richmond, R.K. / Sargent, D.F. / Richmond, T.J.
History
DepositionJan 31, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 25, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
I: DNA (5'(ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGAATTCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT)3')
J: DNA (5'(ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGAATTCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT)3')
A: histone H3
B: histone H4
C: histone H2A.1
D: histone H2B.2
E: histone H3
F: histone H4
G: histone H2A.1
H: histone H2B.2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)199,46723
Polymers198,75310
Non-polymers71413
Water16,988943
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
γ
α
β
Length a, b, c (Å)105.400, 181.540, 109.600
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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DNA chain , 1 types, 2 molecules IJ

#1: DNA chain DNA (5'(ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGAATTCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT)3')


Mass: 45053.855 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: palindromic 146 base pair DNA duplex / Source: (gene. exp.) Homo sapiens (human)
Description: DNA SEQUENCE SYNTHESIZED, CLONED, MULTIMERIZED, AND EXCISED FROM PLASMID
Production host: Escherichia coli (E. coli)

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Protein , 4 types, 8 molecules AEBFCGDH

#2: Protein histone H3 /


Mass: 15303.930 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#3: Protein histone H4 /


Mass: 11263.231 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#4: Protein histone H2A.1


Mass: 13907.163 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P06897
#5: Protein histone H2B.2


Mass: 13848.097 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281

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Non-polymers , 2 types, 956 molecules

#6: Chemical
ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 13 / Source method: obtained synthetically / Formula: Mn
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 943 / 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: 27

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Sample preparation

CrystalDensity Matthews: 2.59 Å3/Da / Density % sol: 52.6 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 6
Details: manganese chloride, potassium chloride, potassium cacodylate, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Components of the solutions
IDNameCrystal-IDSol-ID
1MnCl211
2KCl11
3potassium cacodylate11
Crystal grow
*PLUS
Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formulaDetails
14 mg/mlprotein1drop
270-85 mM1dropMnCl2
350-60 mM1dropKCl
420 mMpotassium cacodylate1droppH6.0
540-46 mM1reservoirMnCl2
630-40 mM1reservoirKCl
710-20 mMpotassium cacodylate1reservoir

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Data collection

DiffractionMean temperature: 103 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID09 / Wavelength: 0.85 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 2, 1996
RadiationMonochromator: Si 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.85 Å / Relative weight: 1
ReflectionResolution: 1.97→99 Å / Num. all: 147830 / Num. obs: 145317 / % possible obs: 98.3 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 7.4 % / Biso Wilson estimate: 35.7 Å2 / Rmerge(I) obs: 0.068
Reflection shellResolution: 1.97→2.04 Å / Rmerge(I) obs: 0.495 / % possible all: 84.5
Reflection
*PLUS
Highest resolution: 2 Å / Lowest resolution: 99 Å
Reflection shell
*PLUS
Highest resolution: 2 Å / % possible obs: 84.5 %

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1AOI
Resolution: 2→6 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 952374.43 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.275 2716 2 %RANDOM
Rwork0.24 ---
all0.241 136427 --
obs0.241 136427 99.9 %-
Displacement parametersBiso mean: 58.2 Å2
Baniso -1Baniso -2Baniso -3
1-2.12 Å20 Å20 Å2
2--5.33 Å20 Å2
3----7.45 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.28 Å
Luzzati d res low-6 Å
Luzzati sigma a0.25 Å0.23 Å
Refinement stepCycle: LAST / Resolution: 2→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6087 5980 13 943 13023
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d18.9
X-RAY DIFFRACTIONc_improper_angle_d1.1
X-RAY DIFFRACTIONc_mcbond_it3.871.5
X-RAY DIFFRACTIONc_mcangle_it4.192
X-RAY DIFFRACTIONc_scbond_it2.772
X-RAY DIFFRACTIONc_scangle_it42.5
LS refinement shellResolution: 2→2.12 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.328 446 2 %
Rwork0.309 22125 -
obs--99.9 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2DNA-RNA_REP.PARAMDNA-RNA.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION4ION.PARAMION.TOP
Refinement
*PLUS
Highest resolution: 2 Å / Lowest resolution: 6 Å / Rfactor Rwork: 0.24
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.18
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg18.9
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg1.1
LS refinement shell
*PLUS
Lowest resolution: 2.07 Å / Rfactor Rfree: 0.322 / Rfactor Rwork: 0.312

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