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- PDB-7tg4: [T:Ag+/Hg2+:T--(pH11-pH7; 5s in metals)] Metal-mediated DNA base ... -

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Basic information

Entry
Database: PDB / ID: 7tg4
Title[T:Ag+/Hg2+:T--(pH11-pH7; 5s in metals)] Metal-mediated DNA base pair in tensegrity triangle grown at pH 11 and soaked in pH 7 with Ag+ and Hg2+ for 5s
Components
  • DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*TP*TP*GP*GP*AP*CP*AP*TP*CP*A)-3')
  • DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')
  • DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')
  • DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')
KeywordsDNA / tensegrity triangle / self-assembling crystal / metal-mediated mismatch
Function / homology: / DNA / DNA (> 10)
Function and homology information
Biological speciessynthetic construct (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / SAD / Resolution: 5.21 Å
AuthorsLu, B. / Vecchioni, S. / Seeman, N.C. / Sha, R. / Ohayon, Y.P.
Funding support United States, 6items
OrganizationGrant numberCountry
Office of Naval Research (ONR)N000141912596 United States
Department of Energy (DOE, United States)DE-SC0007991 United States
National Science Foundation (NSF, United States)2106790 United States
Human Frontier Science Program (HFSP)RPG0010/2017 United States
National Science Foundation (NSF, United States)DMR-1420073 United States
National Aeronautic Space Administration (NASA, United States)2020 NASA Center Innovation Fund United States
CitationJournal: Small / Year: 2025
Title: Transmetalation for DNA-Based Molecular Electronics.
Authors: De, A. / Lu, B. / Ohayon, Y.P. / Woloszyn, K. / Livernois, W. / Perren, L. / Yang, C.F. / Mao, C. / Botana, A.S. / Hihath, J. / Canary, J.W. / Sha, R. / Anantram, M.P. / Vecchioni, S.
History
DepositionJan 7, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 25, 2023Provider: repository / Type: Initial release
Revision 1.1May 22, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
Revision 1.2Oct 29, 2025Group: Database references / Structure summary / Category: citation / citation_author / pdbx_entry_details
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*TP*TP*GP*GP*AP*CP*AP*TP*CP*A)-3')
B: DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')
C: DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')
D: DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)12,9885
Polymers12,7874
Non-polymers2011
Water00
1
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*TP*TP*GP*GP*AP*CP*AP*TP*CP*A)-3')
B: DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')
C: DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')
D: DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')
hetero molecules

A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*TP*TP*GP*GP*AP*CP*AP*TP*CP*A)-3')
B: DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')
C: DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')
D: DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')
hetero molecules

A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*TP*GP*TP*TP*TP*GP*GP*AP*CP*AP*TP*CP*A)-3')
B: DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')
C: DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')
D: DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)38,96415
Polymers38,36212
Non-polymers6023
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-y,x-y,z1
crystal symmetry operation3_555-x+y,-x,z1
Unit cell
Length a, b, c (Å)107.219, 107.219, 90.949
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number146
Space group name H-MH3
Space group name HallR3
Symmetry operation#1: x,y,z
#2: -y,x-y,z
#3: -x+y,-x,z
#4: x+1/3,y+2/3,z+2/3
#5: -y+1/3,x-y+2/3,z+2/3
#6: -x+y+1/3,-x+2/3,z+2/3
#7: x+2/3,y+1/3,z+1/3
#8: -y+2/3,x-y+1/3,z+1/3
#9: -x+y+2/3,-x+1/3,z+1/3

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Components

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


Mass: 6463.185 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#2: DNA chain DNA (5'-D(P*CP*CP*AP*TP*AP*CP*A)-3')


Mass: 2066.401 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#3: DNA chain DNA (5'-D(P*GP*GP*CP*TP*GP*CP*T)-3')


Mass: 2129.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: DNA chain DNA (5'-D(P*CP*TP*GP*AP*TP*GP*T)-3')


Mass: 2128.421 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#5: Chemical ChemComp-HG / MERCURY (II) ION


Mass: 200.590 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Hg / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationN

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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: 8.41 Å3/Da / Description: Rhombohedral
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 11
Details: Tris, magnesium sulfate, silver nitrate, mercury chloride
Temp details: 338-293 at 0.4/hr

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 17-ID / Wavelength: 1.00743 Å
DetectorType: DECTRIS EIGER2 X 9M / Detector: PIXEL / Date: Nov 14, 2021
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.00743 Å / Relative weight: 1
ReflectionResolution: 5.21→64.97 Å / Num. obs: 2232 / % possible obs: 84.4 % / Redundancy: 10.3 % / Biso Wilson estimate: 232.88 Å2 / CC1/2: 0.998 / Net I/σ(I): 6.9
Reflection shellResolution: 5.21→6.06 Å / Num. unique obs: 374 / CC1/2: 0.255

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Processing

Software
NameVersionClassification
PHENIX1.19.2_4158refinement
autoPROCdata reduction
STARANISOdata scaling
AutoSolphasing
RefinementMethod to determine structure: SAD / Resolution: 5.21→64.97 Å / SU ML: 1.0398 / Cross valid method: FREE R-VALUE / σ(F): 1.96 / Phase error: 46.8395
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.3289 89 4.02 %
Rwork0.2629 2124 -
obs0.2647 2213 74.26 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 285.55 Å2
Refinement stepCycle: LAST / Resolution: 5.21→64.97 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 858 1 0 859
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0068958
X-RAY DIFFRACTIONf_angle_d0.99481471
X-RAY DIFFRACTIONf_chiral_restr0.0538167
X-RAY DIFFRACTIONf_plane_restr0.004742
X-RAY DIFFRACTIONf_dihedral_angle_d38.9909407
LS refinement shellResolution: 5.21→64.97 Å
RfactorNum. reflection% reflection
Rfree0.3289 89 -
Rwork0.2629 2124 -
obs--74.26 %

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