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., SMALL AMOUNTS OF SOLID SODIUM BENZOATE

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 124.87 α = 90
b = 124.87 β = 90
c = 124.87 γ = 90
Symmetry
Space Group P 21 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 90
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRROR 1997-01
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 28 98.9 0.076 -- -- 4.7 -- 84499 -- 0.0 13.49
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 1.67 97.9 0.18 -- 9.0 4.0 --

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 1.6 90.0 -- 0.0 -- 84499 4229 98.9 -- 0.149 0.152 0.171 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 13.25
RMS Deviations
Key Refinement Restraint Deviation
p_planar_d 0.031
p_mcbond_it 1.07
p_plane_restr 0.022
p_mcangle_it 1.57
p_scangle_it 1.42
p_chiral_restr 0.131
p_multtor_nbd 0.25
p_transverse_tor 30.4
p_singtor_nbd 0.169
p_bond_d 0.012
p_staggered_tor 11.9
p_planar_tor 4.1
p_angle_d 0.026
p_special_tor 0.0
p_scbond_it 1.69
p_xyhbond_nbd 0.093
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.02
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 25
Solvent Atoms 671

Software

Software
Software Name Purpose
CCP4 model building
REFMAC refinement
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing