X-RAY DIFFRACTION Experimental Data & Validation


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Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7
Temperature 293.0
Details 1.8 M (NH4)2SO4, 20 mM MgCl2, 50 mM Potassium Cacodylate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 169.5 α = 90
b = 169.5 β = 90
c = 113.8 γ = 120
Symmetry
Space Group P 65

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1999-04-26
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-1 -- SSRL BL9-1

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
2.6 50 99.9 0.051 0.279 -- 3.8 -- 57348 -- 0.0 71.4
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)
2.6 2.69 99.9 0.41 0.279 1.7 3.8 --

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
MIR 2.6 50.0 -- 0.0 -- 57348 1289 99.9 -- -- 0.266 0.298 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 2.6 2.72 -- 60 7071 0.42 0.48 -- 99.9
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 44.48
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 7.75
x_scbond_it 5.58
x_mcangle_it 6.35
x_mcbond_it 4.34
x_improper_angle_d 1.81
x_dihedral_angle_d 19.45
x_angle_deg 2.22
x_bond_d 0.023
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.58
Luzzati Sigma A (Observed) 0.73
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.68
Luzzati Sigma A (R-Free Set) 0.65
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3897
Nucleic Acid Atoms 3646
Heterogen Atoms 0
Solvent Atoms 0

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (TRUNCATE) Data Reduction (data scaling)
MLPHARE Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
MLPHARE model building