X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.5
Details THE PROTEIN SOLUTIONS CONTAINED 0.1M LI2SO4, 9% PEG 4K AND 0.3% N-OCTYL BETA- D-GLUCOPYRANOSIDE IN 0.01M TRIS-HCL BUFFER(PH 8.5) AND AN ENZYME CONCENTRATION OF 8MG/ML; THE SOLUTION IN RESERVOIR CONTAINED 18% PEG 4K IN SAME BUFFER, ROOM TEMPERATURE OF 17DEG.C.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 100.45 α = 90
b = 54.29 β = 111.76
c = 108.39 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 280
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1997-08-15
Diffraction Radiation
Monochromator Protocol
NICKEL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200HB -- -- --

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 97.3 0.102 0.087 -- 2.6 -- 16462 -- 0.0 38.0
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 2.8 96.3 0.381 0.368 2.6 2.7 --

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 2.6 8.0 -- 2.0 -- 15641 1570 95.9 -- 0.205 0.205 0.286 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 2.71 -- 166 1712 0.314 0.387 -- 93.1
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 25.9
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 0.59
x_bond_d 0.007
x_angle_deg 1.17
x_dihedral_angle_d 26.2
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.26
Luzzati Resolution Cutoff (Low) 6.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3856
Nucleic Acid Atoms 0
Heterogen Atoms 40
Solvent Atoms 108

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
AMORE Structure Solution
X-PLOR 3.8 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.8 refinement
AMORE model building
SCALEPACK data reduction
DENZO data collection