X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.8
Details 1.8 M AMMONIUM SULFATE PH 7.8.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 126.56 α = 90
b = 126.56 β = 90
c = 126.56 γ = 90
Symmetry
Space Group P 21 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 283
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRROR 1996-11
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON MPG/DESY, HAMBURG BEAMLINE BW6 -- MPG/DESY, HAMBURG BW6

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 27 95.7 0.079 -- -- 3.0 -- 65218 -- 0.0 15.7
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 1.83 89.7 0.19 -- 7.0 2.0 --

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 1.75 90.0 -- 0.0 -- 65218 3314 95.7 -- 0.149 0.152 0.176 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 16.5
RMS Deviations
Key Refinement Restraint Deviation
p_transverse_tor 30.7
p_staggered_tor 14.6
p_planar_tor 4.0
p_xyhbond_nbd 0.098
p_multtor_nbd 0.253
p_bond_d 0.013
p_angle_d 0.028
p_planar_d 0.032
p_mcbond_it 1.38
p_mcangle_it 2.0
p_scbond_it 2.12
p_scangle_it 3.12
p_plane_restr 0.023
p_chiral_restr 0.146
p_singtor_nbd 0.168
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.03
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4290
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 399

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CCP4 Structure Solution
REFMAC Structure Refinement
Software
Software Name Purpose
REFMAC refinement
CCP4 model building