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- PDB-1y8v: Crystal structure of the A-DNA GCGTAT*CGC with a 2'-O-propyl Thym... -

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Basic information

Entry
Database: PDB / ID: 1y8v
TitleCrystal structure of the A-DNA GCGTAT*CGC with a 2'-O-propyl Thymidine (T*)
Components5'-D(*GP*CP*GP*TP*AP*(P2T)P*AP*CP*GP*C)-3'
KeywordsDNA / A-DNA / O2'-modification / decamer
Function / homologyDNA
Function and homology information
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsEgli, M. / Minasov, G. / Tereshko, V. / Pallan, P.S. / Teplova, M. / Inamati, G.B. / Lesnik, E.A. / Owens, S.R. / Ross, B.S. / Prakash, T.P. / Manoharan, M.
CitationJournal: Biochemistry / Year: 2005
Title: Probing the Influence of Stereoelectronic Effects on the Biophysical Properties of Oligonucleotides: Comprehensive Analysis of the RNA Affinity, Nuclease Resistance, and Crystal Structure of ...Title: Probing the Influence of Stereoelectronic Effects on the Biophysical Properties of Oligonucleotides: Comprehensive Analysis of the RNA Affinity, Nuclease Resistance, and Crystal Structure of Ten 2'-O-Ribonucleic Acid Modifications.
Authors: Egli, M. / Minasov, G. / Tereshko, V. / Pallan, P.S. / Teplova, M. / Inamati, G.B. / Lesnik, E.A. / Owens, S.R. / Ross, B.S. / Prakash, T.P. / Manoharan, M.
History
DepositionDec 13, 2004Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 28, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 23, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: 5'-D(*GP*CP*GP*TP*AP*(P2T)P*AP*CP*GP*C)-3'
B: 5'-D(*GP*CP*GP*TP*AP*(P2T)P*AP*CP*GP*C)-3'


Theoretical massNumber of molelcules
Total (without water)6,2062
Polymers6,2062
Non-polymers00
Water2,144119
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)24.831, 45.314, 45.682
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
DetailsChains A and B form duplex

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Components

#1: DNA chain 5'-D(*GP*CP*GP*TP*AP*(P2T)P*AP*CP*GP*C)-3'


Mass: 3103.085 Da / Num. of mol.: 2 / Source method: obtained synthetically
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 119 / 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: 2.07 Å3/Da / Density % sol: 40.6 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / pH: 6
Details: 10%MPD, 40mM Na-Cacodilate, 12 mM Spermine, 80mM KCL, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Components of the solutions
IDNameCrystal-IDSol-ID
1MPD11
2Na-Cacodilate11
3Spermine11
4KCL11
5H2O11
6MPD12
7Na-Cacodilate12
8KCL12

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Jun 10, 1998 / Details: Mirrors
RadiationMonochromator: No / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.5→50 Å / Num. all: 8698 / Num. obs: 8698 / % possible obs: 99.4 % / Observed criterion σ(I): -3 / Redundancy: 8.3 % / Rmerge(I) obs: 0.053 / Net I/σ(I): 40
Reflection shellResolution: 1.5→1.55 Å / Redundancy: 4 % / Rmerge(I) obs: 0.407 / Mean I/σ(I) obs: 3.4 / Num. unique all: 820 / % possible all: 97.4

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 410D

410d


Resolution: 1.5→20 Å / Isotropic thermal model: Isotropic / Cross valid method: THROUGHOUT / σ(F): 0
Details: Conjugate gradient refinement using maximum likelihood target for amplitudes
RfactorNum. reflection% reflectionSelection details
Rfree0.2164 895 -Random
Rwork0.1794 ---
all-8451 --
obs-8451 97.1 %-
Displacement parametersBiso mean: 21.4 Å2
Baniso -1Baniso -2Baniso -3
1-0.962 Å20 Å20 Å2
2---2.985 Å20 Å2
3---2.023 Å2
Refinement stepCycle: LAST / Resolution: 1.5→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 412 0 128 540
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.009
X-RAY DIFFRACTIONc_angle_deg1.3
LS refinement shellResolution: 1.5→1.53 Å
RfactorNum. reflection% reflection
Rfree0.2957 52 -
Rwork0.3009 --
obs--93.2 %

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