2RHG

Tryptophan synthase complexed with IGP, pH 7.0, internal aldimine


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7293Protein: 50 mM Bicine pH 7.8, 10 mM Na-EDTA, 1 mM DTE, 20 uM PLP. Reservoir: 50 mM Bicine pH 7.8, 5 mM DTE, 5 mM Na-EDTA, 0.1 M PLP, 2 mM spermine, 2 mM NaN3, 8-12% PEG8000. Crystal soaked in 15% PEG8000, 20% glycerol, 23 mM IGP, pH controlled at pH 9.0 before flash-cooling, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 7.0
Crystal Properties
Matthews coefficientSolvent content
2.5752.16

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 183.654α = 90
b = 59.573β = 94.71
c = 67.547γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMAR scanner 345 mm plate1999-12-14MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE BW7BEMBL/DESY, HamburgBW7B

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
11.95069.80.06210.827675076750-315.2
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)
11.91.9574.30.1754.51.53174

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISTHROUGHOUT219.9940137169368.60.2120.2120.239RANDOM26.5
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]
-5.63-1.4911.06-5.43
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22
c_angle_deg1.2
c_improper_angle_d0.81
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4593
Nucleic Acid Atoms
Solvent Atoms273
Heterogen Atoms35

Software

Software
Software NamePurpose
CNSrefinement
MAR345dtbdata collection
XDSdata reduction
XSCALEdata scaling
CNSphasing