X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help


Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Temperature 277.0
Details 1.6M Na-Citrate, 3% PEG 400, 0.1M Na-Hepes, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 47.54 α = 90
b = 74.49 β = 90
c = 76.95 γ = 90
Space Group P 21 21 21


Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH Premirrors, bent mirror 2001-11-23
Diffraction Radiation
Monochromator Protocol
Triangular monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Data Collection

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
1.6 20 -- 0.044 0.044 -- 3.8 36771 36771 0.0 0.0 21.1
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)
1.6 1.7 87.5 -- 0.255 4.0 -- 3101


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 1.6 20.0 0.0 0.0 33286 33286 29973 90.5 0.2354 0.2354 0.2315 0.2514 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 1.6 1.7 3101 280 4807 0.231 0.251 0.012 10.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model restrained
Mean Isotropic B 21.5
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.81569
c_dihedral_angle_d 22.4946
c_angle_deg 1.23684
c_bond_d 0.005016
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.22
Luzzati Sigma A (Observed) 0.09
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.24
Luzzati Sigma A (R-Free Set) 0.12
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2166
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 107


Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SHARP Structure Solution
CNS Structure Refinement
Software Name Purpose
CNS refinement
SHARP model building
SCALEPACK data reduction
DENZO data collection