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- PDB-1dnx: RNA/DNA DODECAMER R(G)D(CGTATACGC) WITH MAGNESIUM BINDING SITES -

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Basic information

Entry
Database: PDB / ID: 1dnx
TitleRNA/DNA DODECAMER R(G)D(CGTATACGC) WITH MAGNESIUM BINDING SITES
ComponentsDNA/RNA (5'-R(*GP)-D(*CP*GP*TP*AP*TP*AP*CP*GP*C)-3')
KeywordsDNA-RNA HYBRID / DNA CONFORMATION / RNA/DNA HYBRID / METAL IONS / DNA-RNA COMPLEX
Function / homologyDNA/RNA hybrid
Function and homology information
MethodX-RAY DIFFRACTION / Resolution: 1.7 Å
AuthorsRobinson, H. / Gao, Y.-G. / Sanishvili, R. / Joachimiak, A. / Wang, A.H.-J.
CitationJournal: Nucleic Acids Res. / Year: 2000
Title: Hexahydrated magnesium ions bind in the deep major groove and at the outer mouth of A-form nucleic acid duplexes.
Authors: Robinson, H. / Gao, Y.G. / Sanishvili, R. / Joachimiak, A. / Wang, A.H.
History
DepositionDec 16, 1999Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 10, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 4, 2017Group: Refinement description / Category: software
Revision 1.4Feb 7, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)6,1463
Polymers6,1222
Non-polymers241
Water1,51384
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)26.188, 41.944, 43.323
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Cell settingorthorhombic
Space group name H-MP212121

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Components

#1: DNA/RNA hybrid DNA/RNA (5'-R(*GP)-D(*CP*GP*TP*AP*TP*AP*CP*GP*C)-3')


Mass: 3061.005 Da / Num. of mol.: 2 / Source method: obtained synthetically
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 84 / 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: 1.75 Å3/Da / Density % sol: 30 %
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 6.5
Details: MPD, CACODYLATE, MGCL2, SPERMINE, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Components of the solutions
IDNameCrystal-IDSol-ID
1CACODYLATE11
2SPERMINE11
3MGCL211
4MPD11
5MPD12
Crystal
*PLUS
Crystal grow
*PLUS
Method: unknown
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDDetailsSol-IDChemical formula
15 mMDNA duplex10.0025ml
2100 mMsodium cacodylate10.0010ml
320 %MPD10.005ml
415 mMspermine10.0025ml
5100 mM10.0025ml1MgCl2

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Data collection

DiffractionMean temperature: 123 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Apr 22, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.7→20 Å / Num. all: 5659 / Num. obs: 5659 / % possible obs: 96.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 10.1 % / Rmerge(I) obs: 0.079 / Net I/σ(I): 47.3
Reflection shellResolution: 1.7→1.76 Å / Redundancy: 7.1 % / Rmerge(I) obs: 0.228 / Mean I/σ(I) obs: 17.7 / % possible all: 94
Reflection
*PLUS

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Processing

Software
NameVersionClassification
d*TREKV.4.7data reduction
X-PLORmodel building
SHELXL-97refinement
d*TREKV. 4.7data scaling
X-PLORphasing
RefinementResolution: 1.7→20 Å / Num. parameters: 1979 / Num. restraintsaints: 1758 / Cross valid method: A POSTERIORI / σ(F): 0 / σ(I): 0 / Stereochemistry target values: G.PARKINSON ET AL.
RfactorNum. reflection% reflectionSelection details
Rfree0.243 290 5 %RANDOM
Rwork0.195 ---
all0.195 5659 --
obs0.194 5598 96.3 %-
Solvent computationSolvent model: SHELXL SWAT OPTION
Refine analyzeNum. disordered residues: 0 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 491
Refinement stepCycle: LAST / Resolution: 1.7→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms0 406 7 78 491
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.008
X-RAY DIFFRACTIONs_angle_d0.024
X-RAY DIFFRACTIONs_similar_dist
X-RAY DIFFRACTIONs_from_restr_planes0.074
X-RAY DIFFRACTIONs_zero_chiral_vol
X-RAY DIFFRACTIONs_non_zero_chiral_vol
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.003
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.052
X-RAY DIFFRACTIONs_approx_iso_adps
Software
*PLUS
Name: SHELXL-97 / Classification: refinement
Refinement
*PLUS
σ(F): 0 / % reflection Rfree: 5 % / Rfactor Rwork: 0.194
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.007
X-RAY DIFFRACTIONs_plane_restr0.074

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