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- PDB-8w76: Crystal structure of d(CGTATACG)2 duplex -

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Basic information

Entry
Database: PDB / ID: 8w76
TitleCrystal structure of d(CGTATACG)2 duplex
ComponentsDNA (5'-D(P*CP*GP*TP*AP*TP*AP*CP*G)-3')
KeywordsDNA / end-to-end junction / helix-helix junction
Function / homology: / DNA
Function and homology information
Biological speciessynthetic construct (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.71 Å
AuthorsSatange, R.B. / Peng, C.L. / Hou, M.H.
Funding support Taiwan, 1items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, Taiwan)109-2628-M-005-001-MY4 Taiwan
CitationJournal: Nucleic Acids Res. / Year: 2024
Title: Targeting DNA junction sites by bis-intercalators induces topological changes with potent antitumor effects.
Authors: Huang, S.C. / Chen, C.W. / Satange, R. / Hsieh, C.C. / Chang, C.C. / Wang, S.C. / Peng, C.L. / Chen, T.L. / Chiang, M.H. / Horng, Y.C. / Hou, M.H.
History
DepositionAug 30, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 7, 2024Provider: repository / Type: Initial release
Revision 1.1Sep 11, 2024Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: DNA (5'-D(P*CP*GP*TP*AP*TP*AP*CP*G)-3')
D: DNA (5'-D(P*CP*GP*TP*AP*TP*AP*CP*G)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)5,0736
Polymers4,8532
Non-polymers2204
Water1086
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area760 Å2
ΔGint-9 kcal/mol
Surface area3740 Å2
MethodPISA
Unit cell
Length a, b, c (Å)37.614, 37.614, 77.994
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number92
Space group name H-MP41212

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Components

#1: DNA chain DNA (5'-D(P*CP*GP*TP*AP*TP*AP*CP*G)-3')


Mass: 2426.617 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#2: Chemical
ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mn
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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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: 2.84 Å3/Da / Density % sol: 56.72 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop
Details: 1.0mM Oligonucleotides, 50mM Bis-tris (pH 7.0), 20mM sodium chloride, 10mM calcium chloride, 80mM potassium chloride, 7mM manganese(II) chloride tetrahydrate, 10% PEG 2000, 50% Reservior PEG 2000

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: NSRRC / Beamline: BL15A1 / Wavelength: 1 Å
DetectorType: RAYONIX MX300HE / Detector: CCD / Date: Oct 24, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.7→30 Å / Num. obs: 1753 / % possible obs: 99.3 % / Redundancy: 9.5 % / Rsym value: 0.033 / Net I/σ(I): 25.1
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2CC starRpim(I) allRrim(I) allΧ2% possible all
2.7-2.810.50.1231620.99910.0390.1291.042100
2.8-2.9110.20.0971650.9980.9990.0310.1021.003100
2.91-3.0410.40.0781660.99910.0240.0821.057100
3.04-3.210.40.039172110.0120.0411.029100
3.2-3.49.80.021171110.0070.0230.99199.4
3.4-3.669.50.04167110.0130.0421.071100
3.66-4.038.60.0351780.99910.0120.0371.01100
4.03-4.619.40.031178110.010.0321.00598.9
4.61-5.89.40.032183110.0110.0341.02698.9
5.8-307.80.0372110.99910.0130.0391.00596.8

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Processing

Software
NameVersionClassification
PHENIX(1.17.1_3660: ???)refinement
HKL-2000data scaling
HKL-2000data reduction
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.71→27.07 Å / SU ML: 0.1 / Cross valid method: NONE / σ(F): 1.35 / Phase error: 23.04 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.268 169 9.95 %
Rwork0.2214 --
obs0.226 1698 97.64 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 2.71→27.07 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 328 4 6 338
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.004366
X-RAY DIFFRACTIONf_angle_d0.64560
X-RAY DIFFRACTIONf_dihedral_angle_d34.534154
X-RAY DIFFRACTIONf_chiral_restr0.0364
X-RAY DIFFRACTIONf_plane_restr0.00216
LS refinement shellResolution: 2.7→2.8 Å
RfactorNum. reflection% reflection
Rfree0.26 --
Rwork0.22 --
obs-1753 100 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
10.1394-0.20110.09120.4366-0.17910.0787-0.0592-0.0909-0.2566-0.312-0.07940.1152-0.06870.5311-0.00030.2184-0.0521-0.0260.380.11180.27615.4932-1.552512.0478
20.26950.2652-0.05710.283-0.080.02510.12140.33840.02860.43350.08890.18430.53360.80450.02530.35060.09050.04180.49920.05030.352516.0412.62213.1368
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'C' and (resid 1 through 8 )
2X-RAY DIFFRACTION2chain 'D' and (resid 1 through 8 )

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