X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7.7
Temperature 293.0
Details 0.2M POTASSIUM ACETATE, 20% PEG 3350, pH 7.7, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 45.01 α = 90
b = 57.88 β = 90
c = 135.66 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 2000-07-26
Diffraction Radiation
Monochromator Protocol
Ni MIRROR + Ni FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU300 1.5418 -- --

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
2.05 30 88.3 0.077 0.079 -- 4.4 23038 20270 0.0 0.0 12.4
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
2.05 2.12 91.6 0.178 0.19 9.4 4.8 2046

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MOLECULAR REPLACEMENT 2.05 16.54 -- 0.0 23038 20270 2079 88.3 0.214 0.198 0.198 0.228 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 2.05 2.18 -- 326 3098 0.228 0.259 0.014 91.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 25.3
Anisotropic B[1][1] 4.55
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 1.28
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -5.83
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.008
c_dihedral_angle_d 22.3
c_scangle_it 2.61
c_angle_deg 1.3
c_mcbond_it 1.1
c_mcangle_it 1.74
c_scbond_it 1.72
c_improper_angle_d 0.83
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.27
Luzzati Sigma A (R-Free Set) 0.19
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2558
Nucleic Acid Atoms 0
Heterogen Atoms 9
Solvent Atoms 144

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
CNS refinement
CNS phasing