4E6I

Crystal structure of Staphylococcal nuclease variant NVIAGA V99G at cryogenic temperature


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP627735% MPD, 25 mM potassium phosphate, calcium chloride, pdTp, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.2144.22

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 68.337α = 90
b = 68.337β = 90
c = 63.227γ = 90
Symmetry
Space GroupP 41

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDAPEX II CCDMultilayer optics2011-09-06MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SEALED TUBEOTHER1.54

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
1231.6199.990.031923.9529.771982519825
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)
122.041000.503416.57

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)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 REPLACEMENTTHROUGHOUTPDB ENTRY 2RDF227.521712517125199796.550.21660.21660.21060.2682RANDOM33.7567
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]
0.630.63-1.26
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.875
r_dihedral_angle_4_deg18.472
r_dihedral_angle_3_deg16.587
r_dihedral_angle_1_deg6.562
r_angle_refined_deg1.978
r_chiral_restr0.138
r_bond_refined_d0.018
r_gen_planes_refined0.011
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1965
Nucleic Acid Atoms
Solvent Atoms94
Heterogen Atoms13

Software

Software
Software NamePurpose
XPREPdata reduction
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
APEXdata collection
APEXdata reduction