X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7
Details HANG DROP, PROTEIN CONCENTRATION BETWEEN 4 AND 16MG/ML IN 20 MM KCL, 10MM ZNCL, 10MM DTT, 20MM TRIS PH7.7, RESERVOIR SOLUTION OF 13 - 18% PEG 8000, 200MM AMMONIUM ACETATE, PH 7.0, vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 167.06 α = 90
b = 167.06 β = 90
c = 97.9 γ = 120
Symmetry
Space Group P 65

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 96
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU MSC DOUBLE-MIRRORS 1997-06-17
Diffraction Radiation
Monochromator Protocol
NI FILTER --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU -- -- --

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
2.25 25 98.1 0.049 0.049 -- 4.0 -- 72290 -- -3.0 26.7
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)
2.25 2.28 81.8 0.556 0.556 0.92 1.2 --

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
MULTIPLE ISOMORPHOUS REPLACEMENT 2.25 6.0 -- 1.0 -- 62497 2825 89.58 -- 0.21 0.21 0.26 YES
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 2.25 2.35 -- 281 5298 0.36 0.35 -- 64.16
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 31.2
RMS Deviations
Key Refinement Restraint Deviation
x_scangle_it 1.132
x_scbond_it 1.454
x_mcangle_it 1.132
x_mcbond_it 1.454
x_improper_angle_d 1.364
x_bond_d 0.01
x_angle_deg 1.748
x_dihedral_angle_d 20.43
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.42
Luzzati Resolution Cutoff (Low) 6.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5950
Nucleic Acid Atoms 0
Heterogen Atoms 1
Solvent Atoms 402

Software

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