X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6
Details PROTEIN WAS CRYSTALLIZED FROM 3.2M AMMONIUM SULFATE, 0.1M NA,K.PHOSPHATE, PH 6.0 WITH A PROTEIN CONCENTRATION OF 10 MG/ML

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 34.3 α = 90
b = 34.3 β = 90
c = 111.8 γ = 120
Symmetry
Space Group P 32 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 295
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1996-04
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- ENRAF-NONIUS -- -- --

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
2.15 20.3 92.7 -- 0.065 -- 5.5 -- 4422 -- 2.0 12.72
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)
2.15 2.25 98.0 -- 0.074 8.2 5.2 --

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 2.15 8.0 -- 0.0 -- 4173 -- 91.6 -- 0.167 0.167 0.22 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 2.15 2.3 -- -- 644 0.174 0.269 -- 94.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 11.9
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 1.627
x_dihedral_angle_d 27.08
x_mcangle_it 2.5
x_improper_angle_d 1.148
x_mcbond_it 2.0
x_scbond_it 2.5
x_scangle_it 3.0
x_bond_d 0.013
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.19
Luzzati Resolution Cutoff (Low) 8.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 727
Nucleic Acid Atoms 0
Heterogen Atoms 1
Solvent Atoms 75

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (ROTAVATA) Data Reduction (data scaling)
AMORE Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
AMORE model building