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- PDB-8c64: Crystal structure of arsenoplatin-1/B-DNA adduct obtained upon 48... -

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Basic information

Entry
Database: PDB / ID: 8c64
TitleCrystal structure of arsenoplatin-1/B-DNA adduct obtained upon 48 h of soaking
ComponentsDNA (5'-D(*CP*GP*CP*GP*AP*AP*TP*TP*CP*GP*CP*G)-3')
KeywordsDNA / Duplex / B-DNA / Arsenoplatin-1 / Anticancer agent / Metallodrug
Function / homologyarsenoplatin-1 / : / DNA / DNA (> 10)
Function and homology information
Biological speciessynthetic construct (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.51 Å
AuthorsTroisi, R. / Tito, G. / Ferraro, G. / Sica, F. / Merlino, A.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Dalton Trans / Year: 2024
Title: On the mechanism of action of arsenoplatins: arsenoplatin-1 binding to a B-DNA dodecamer.
Authors: Troisi, R. / Tito, G. / Ferraro, G. / Sica, F. / Massai, L. / Geri, A. / Cirri, D. / Messori, L. / Merlino, A.
History
DepositionJan 11, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 31, 2024Provider: repository / Type: Initial release
Revision 1.1Feb 7, 2024Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed ..._citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Feb 28, 2024Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)8,1355
Polymers7,3272
Non-polymers8083
Water543
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1480 Å2
ΔGint-48 kcal/mol
Surface area4500 Å2
MethodPISA
Unit cell
Length a, b, c (Å)39.970, 65.670, 23.560
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: DNA chain DNA (5'-D(*CP*GP*CP*GP*AP*AP*TP*TP*CP*GP*CP*G)-3')


Mass: 3663.392 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#2: Chemical ChemComp-PT / PLATINUM (II) ION


Mass: 195.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Pt / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-A6R / arsenoplatin-1


Mass: 418.117 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H8AsN2O4Pt / Feature type: SUBJECT OF INVESTIGATION
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

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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: 2.11 Å3/Da / Density % sol: 41.71 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: MPD 7 % v/v, MgCl2 20 mM, spermine tetrahydrochloride 80 mM, sodium cacodylate 60 mM, pH 6.5. Equilibrated against a reservoir containing MPD 50 % v/v

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: ELETTRA / Beamline: 11.2C / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Jun 14, 2022
RadiationMonochromator: M / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.51→34.14 Å / Num. obs: 2357 / % possible obs: 99.8 % / Redundancy: 10.5 % / CC1/2: 1 / Net I/σ(I): 13.7
Reflection shellResolution: 2.51→2.55 Å / Redundancy: 10.6 % / Mean I/σ(I) obs: 2.1 / Num. unique obs: 118 / CC1/2: 0.9 / % possible all: 100

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Processing

Software
NameVersionClassification
REFMAC5.8.0403refinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing
autoPROCdata processing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.51→34.14 Å / Cor.coef. Fo:Fc: 0.975 / Cor.coef. Fo:Fc free: 0.963 / SU B: 8.944 / SU ML: 0.196 / Cross valid method: THROUGHOUT / ESU R: 1.085 / ESU R Free: 0.298 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.23238 91 4.2 %RANDOM
Rwork0.17865 ---
obs0.1807 2064 91.47 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 59.082 Å2
Baniso -1Baniso -2Baniso -3
1-1.16 Å20 Å20 Å2
2---7.84 Å20 Å2
3---6.68 Å2
Refinement stepCycle: 1 / Resolution: 2.51→34.14 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 486 4 3 493
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.011545
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg2.3441.786836
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg
X-RAY DIFFRACTIONr_dihedral_angle_2_deg
X-RAY DIFFRACTIONr_dihedral_angle_3_deg
X-RAY DIFFRACTIONr_dihedral_angle_4_deg
X-RAY DIFFRACTIONr_chiral_restr0.0840.294
X-RAY DIFFRACTIONr_gen_planes_refined0.0150.02252
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it7.7046.058545
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined12.35586.69966
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.511→2.576 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.392 8 -
Rwork0.293 155 -
obs--92.09 %

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