X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.2
Details PROTEIN WAS CRYSTALLIZED FROM 2.8 M AMMONIUM SULFATE, 100 MM TRIS/HCL, PH 8.2

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 47.1 α = 90
b = 47.1 β = 90
c = 68.82 γ = 90
Symmetry
Space Group P 41

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 90
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRROR 1996-10
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL 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
1.28 14.6 93.6 -- 0.033 -- 4.6 -- 36004 -- -- 12.7
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)
1.28 1.31 78.2 -- 0.357 1.6 2.5 --

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
MAD 1.28 8.0 -- -- -- 35906 1825 93.3 -- 0.191 0.191 0.224 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 1.28 1.29 -- 34 748 0.327 0.304 -- 61.1
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 15.1
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.263
x_bond_d 0.012
x_angle_deg 1.453
x_dihedral_angle_d 23.15
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 997
Nucleic Acid Atoms 0
Heterogen Atoms 43
Solvent Atoms 196

Software

Computing
Computing Package Purpose
DENZO, MOSFLM Data Reduction (intensity integration)
SCALEPACK, CCP4 (AGROVATA, ROTAVATA, TRUNCATE) Data Reduction (data scaling)
MADPRB, MADSYS, 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
MADSYS model building
MADPRB model building