3WCN

Crystal structure of the depentamerized mutant of selenocysteine synthase SelA


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6293100mM trisodium citrate-HCl, 580-590mM trisodium citrate, 100mM L-serine, 100mM Na2S2O3, pH 6, vapor diffusion, sitting drop, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
3.4764.54

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 144.137α = 90
b = 144.137β = 90
c = 273.406γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray90CCDADSC QUANTUM 315mirrors2008-10-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSPRING-8 BEAMLINE BL41XU0.97915SPring-8BL41XU

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
13.355099.70.1020.10217.262115921096-2120.57
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)
13.353.471000.7120.7122.756.12066

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT3W1I3.3547.3211.352118221028106299.250.19280.19050.239Random151.3732
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
f_dihedral_angle_d15.636
f_angle_d1.273
f_chiral_restr0.075
f_bond_d0.01
f_plane_restr0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms7035
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms20

Software

Software
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing