X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.2
Details pH 5.2

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 14.9 α = 90
b = 14.6 β = 100.29
c = 22.6 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 287
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IIC -- 1995-03-15
Diffraction Radiation
Monochromator Protocol
-- --
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
1.1 22 84.2 0.0718 -- -- 7.6 -- 3597 -- -- --
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)
1.1 1.2 54.9 0.335 -- 4.23 6.8 --

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
DIRECT METHODS 1.2 6.0 -- 2.0 -- 2960 306 95.8 -- 0.178 0.178 0.222 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 1.2 1.25 -- 35 292 0.302 0.351 -- 83.6
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 15.9
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.41
x_bond_d 0.007
x_dihedral_angle_d 26.11
x_angle_deg 1.72
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.17
Luzzati Resolution Cutoff (Low) 6.0
Luzzati ESD (R-Free Set) 0.23
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 97
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 21

Software

Software
Software Name Purpose
PROCESS data collection
PROCESS data reduction
SHAKE-N-BAKE model building
X-PLOR refinement version: 3.1
PROCESS data scaling
SHAKE-N-BAKE phasing