1SC7

Human DNA Topoisomerase I (70 Kda) In Complex With The Indenoisoquinoline MJ-II-38 and Covalent Complex With A 22 Base Pair DNA Duplex


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.4289PEG 8000, AMMONIUM SULFATE, MES, pH 6.4, VAPOR DIFFUSION, SITTING DROP, temperature 289K
Crystal Properties
Matthew coefficientSolvent content
3.3262.96

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 260.94α = 90
b = 74.659β = 96.94
c = 57.494γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X251.1NSLSX25

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
132090.10.09615.118923
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
33.0832.70.3272.31224

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT319.8519449190887.90.2330.285RANDOM43.8
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
-4.9-0.3318.44-13.54
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d25.6
c_improper_angle_d6.18
c_scangle_it4.55
c_mcangle_it2.89
c_scbond_it2.7
c_mcbond_it1.65
c_angle_deg1.6
c_bond_d0.011
c_angle_deg_prot
c_bond_d_na
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d25.6
c_improper_angle_d6.18
c_scangle_it4.55
c_mcangle_it2.89
c_scbond_it2.7
c_mcbond_it1.65
c_angle_deg1.6
c_bond_d0.011
c_angle_deg_prot
c_bond_d_na
c_dihedral_angle_d_na
c_angle_d_na
c_bond_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_angle_d_prot
c_angle_d
c_angle_deg_na
c_dihedral_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4699
Nucleic Acid Atoms892
Solvent Atoms
Heterogen Atoms38

Software

Software
Software NamePurpose
CNXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing