3W1I

Crystal structure of the N-terminal truncated selenocysteine synthase SelA


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.5293120mM Tris-HCl, 11% PEG 4000, 400mM CaCl2, 160mM KCl, 5.0mM NiCl2, 50mM Na2S2O3, 50mM L-serine, 0.2M NaCl, 10mM 2-mercaptoethanol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 92.825α = 90
b = 280.936β = 113.45
c = 97.645γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray90CCDADSC QUANTUM 270mirrors2008-03-04MSINGLE WAVELENGTH
22x-ray90CCDADSC QUANTUM 315mirrors2008-02-19MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPHOTON FACTORY BEAMLINE BL-17A1.07117Photon FactoryBL-17A
2SYNCHROTRONSPRING-8 BEAMLINE BL41XU0.97917, 0.97947SPring-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
13.1925099.50.090.0922.47.47552375145-2
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)
13.23.31960.6740.6742.56.27513

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (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 DIFFRACTIONMAD3.19248.9411.357578975046375099.020.17690.17380.2354RANDOM130.1176
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]
-21.7714-6.6801-9.670331.4417
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d14.459
f_angle_d1.22
f_chiral_restr0.071
f_bond_d0.009
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms30712
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms7

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
DMphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
autoSHARPphasing