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_mcangle_it 2.0
p_bond_d 0.013
p_planar_d 0.032
p_scbond_it 2.12
p_xyhbond_nbd 0.098
p_staggered_tor 14.6
p_chiral_restr 0.146
p_singtor_nbd 0.168
p_scangle_it 3.12
p_multtor_nbd 0.253
p_angle_d 0.028
p_mcbond_it 1.38
p_plane_restr 0.023
p_planar_tor 4.0
p_transverse_tor 30.7
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

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