X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.6
Details DROPS OF EQUAL AMOUNT OF 10-12 MG/ML PROTEIN AND RESERVOIR SOLUTION WERE EQUILIBRATED AGAINST 1 ML OF (NH4)2SO4 AT 56% SATURATION IN 100MM TRIS-ACETATE BUFFER, PH 6.6 AND 1% MPD AND 1% DTT

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.33 α = 90
b = 54.33 β = 90
c = 186.57 γ = 90
Symmetry
Space Group P 41 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 300
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS MONOCHROMATOR 1994-12
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH3R -- -- --

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
2.23 30 90.9 0.075 0.075 -- 7.5 -- 13192 -- 0.5 --
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)
2.25 2.5 73.1 -- 0.19 3.3 7.49 --

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 2.23 6.0 -- 2.0 -- 11870 -- 87.23 -- 0.1831 0.1831 -- --
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 2.23 2.33 -- -- 581 0.2234 -- -- 52.52
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 33.31
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 2.498
x_bond_d 0.01
x_improper_angle_d 1.44
x_dihedral_angle_d 27.22
x_mcbond_it 1.5
x_mcangle_it 2.0
x_scbond_it 2.0
x_scangle_it 2.5
Coordinate Error
Parameter Value
Luzzati Resolution Cutoff (Low) 6.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2070
Nucleic Acid Atoms 0
Heterogen Atoms 52
Solvent Atoms 30

Software

Software
Software Name Purpose
X-PLOR model building version: 3.1
X-PLOR refinement version: 3.1
R-AXIS data reduction version: V. 3.4
R-AXIS data scaling version: V. 3.4
X-PLOR phasing version: 3.1