X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.4
Temperature 277.0
Details PROTEIN WAS CRYSTALLIZED FROM 1.9M (NH4)2SO4, 0.1M TRISHCL PH 8.4 AT 4 C, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 81.02 α = 90
b = 81.02 β = 90
c = 113.4 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE AREA DETECTOR MARRESEARCH TOROIDAL MIRROR 1997-07
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ELETTRA BEAMLINE 5.2R -- ELETTRA 5.2R

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 10 100.0 -- 0.059 -- 5.0 -- 43712 -- -3.0 11.6
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 1.79 100.0 -- 0.232 4.0 5.0 --

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 10.0 -- 0.0 -- 43712 4462 100.0 -- 0.2 0.2 0.229 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 1.83 -- 548 4840 0.268 0.285 0.011 100.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 10.0
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 3.923
x_scbond_it 3.441
x_mcangle_it 2.844
x_mcbond_it 2.532
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2298
Nucleic Acid Atoms 0
Heterogen Atoms 64
Solvent Atoms 316

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR 3.851 Structure Solution
X-PLOR 3.851 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.851 refinement
X-PLOR version: 3.851 model building
SCALEPACK data reduction
DENZO data collection