X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.7
Details PROTEN WAS CRYSTALLIZED FROM THE 1:1 MIXTURE OF 10MG/ML PROTEIN SOLUTION IN 5MM TRIS-HCL PH7.2 AND 30% PEG 6000, 0.2M NA-ACETATE, 0.1M NA-CACODYLATE PH 6.7

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.8 α = 90
b = 67.97 β = 90
c = 75.43 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 283
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MACSCIENCE MIRRORS 1996-02-15
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE MACSCIENCE MX18X -- -- --

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
1.75 -- 98.4 0.055 -- -- 3.4 -- 69704 -- 4.0 16.3
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)
1.75 1.95 98.2 0.199 -- 3.5 3.1 --

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
SIRAS 1.75 100.0 -- 0.0 -- 20257 1031 97.6 -- 0.192 0.192 0.241 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 1.75 1.86 -- 168 3042 0.327 0.364 0.028 97.4
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 19.5
Anisotropic B[1][1] 0.0
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.0
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.0
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 1.2
x_scangle_it 4.38
x_mcbond_it 1.51
x_scbond_it 2.83
x_improper_angle_d 0.62
x_mcangle_it 2.27
x_bond_d 0.006
x_dihedral_angle_d 25.4
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.22
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.25
Luzzati Sigma A (R-Free Set) 0.23
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1496
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 187

Software

Software
Software Name Purpose
DENZO data reduction
SCALA data scaling
SHARP phasing
X-PLOR refinement version: 3.851
CCP4 data scaling version: (SCALA)