X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.6
Temperature 277.0
Details CRYSTALLIZED AT 277 K FROM 10 MG/ML PROTEIN SOLUTION USING 22% PEG 3350, 10 MM CACL2 AND 0.15M NH4CL AS PRECIPITANT AT PH=5.6 (0.1 M SODIUM CITRATE).

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 45.92 α = 90
b = 49.79 β = 97.34
c = 89.88 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU -- 1995-12
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
2.52 100 94.5 0.12 0.131 -- 3.1 -- 13312 -- 0.0 36.25
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)
2.5 2.6 91.9 0.296 0.312 2.63 3.0 --

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 2.5 100.0 -- 2.0 -- 13312 1183 85.0 -- 0.182 0.182 0.242 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 2.54 2.59 -- 38 470 0.259 0.306 0.05 67.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 18.64
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 4.106
x_scbond_it 2.959
x_mcangle_it 3.015
x_mcbond_it 1.894
x_improper_angle_d 1.304
x_bond_d 0.007
x_angle_deg 1.369
x_dihedral_angle_d 26.17
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.26
Luzzati Sigma A (Observed) 0.28
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.369
Luzzati Sigma A (R-Free Set) 0.438
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3328
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 128

Software

Computing
Computing Package Purpose
BIOTEX Data Reduction (intensity integration)
BIOTEX Data Reduction (data scaling)
X-PLOR 3.851 Structure Solution
X-PLOR 3.851 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.851 refinement
X-PLOR version: 3.851 model building
BIOTEX data reduction
BIOTEX data collection