1DDU

E. COLI THYMIDYLATE SYNTHASE IN COMPLEX WITH CB3717 AND 2',5'-DIDEOXYURIDINE (DDURD)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1TDUPDB ENTRY 1TDU

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.8CRYSTALLIZATION WAS CONDUCTED IN HANGING DROPS CONTAINING 4.2 MG/ML E. COLI TS, 0.38 MM DURD, 3.8 MM DTT, 1.0 MM CB3717 AND 1.2 M (NH4)2SO4, PH 7.8 (20 MM KPO4) OVER A WELL SOLUTION CONTAINING 2.4 M (NH4)2SO4 AND 1.0 MM DTT., vapor diffusion - hanging drop
Crystal Properties
Matthews coefficientSolvent content
2.5652.4

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 127.405α = 90
b = 127.405β = 90
c = 68.203γ = 120
Symmetry
Space GroupP 63

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298IMAGE PLATERIGAKU1996-11-22M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
12.15070.10.0680.0685.12.63702714.1
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.12.1649.80.2520.2521.62.1

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONDIFFERENCE FOURIERTHROUGHOUTPDB ENTRY 1TDU2.18215938168878.40.1880.1880.272SHELLS24.3
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]
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d26
x_scangle_it3.27
x_angle_deg3.1
x_mcangle_it2.24
x_scbond_it2.12
x_mcbond_it1.35
x_improper_angle_d1.15
x_bond_d0.013
x_bond_d_na
x_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d26
x_scangle_it3.27
x_angle_deg3.1
x_mcangle_it2.24
x_scbond_it2.12
x_mcbond_it1.35
x_improper_angle_d1.15
x_bond_d0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4298
Nucleic Acid Atoms
Solvent Atoms66
Heterogen Atoms120

Software

Software
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing