2OQX

Crystal Structure of the apo form of E. coli tryptophanase at 1.9 A resolution


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.529330% PEG 400, 100mM HEPES, 100 mM magnesium sulfate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.957.59

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 118.422α = 90
b = 120.116β = 90
c = 171.209γ = 90
Symmetry
Space GroupF 2 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMAR scanner 345 mm plateosmic mirrors2003-01-01MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU3001.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
11.91595.40.0742.543.38858320.9
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.91.9799.30.314.253.29268

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1.914.8288583263195.40.210.210.2030.232RANDOM27
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]
0.562.66-3.22
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d21.7
c_scangle_it2.76
c_scbond_it1.93
c_mcangle_it1.61
c_angle_deg1.2
c_mcbond_it1.09
c_improper_angle_d0.77
c_bond_d0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3670
Nucleic Acid Atoms
Solvent Atoms364
Heterogen Atoms17

Software

Software
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
MAR345data collection
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement