X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.5
Details RESERVOIR SOLUTION: 0.4M NA2HPO4-2(H2O), 0.4M K2HPO4, 0.1M TRIS-HCL PH 8.5, 0.1M (NH4)2HPO4 AND 5% PEG200. DROPS WERE COMPOSED OF EQUAL VOLUMES OF PROTEIN AND RESERVOIR SOLUTION AND WERE SET UP USING THE SITTING DROP METHOD.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.28 α = 90
b = 66.14 β = 90
c = 71.72 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC CCD TOROIDAL MIRRORS 1999-09-15
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL SI 111 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-4 -- ESRF ID14-4

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
2.4 24.4 99.8 0.078 -- -- 3.5 -- 10638 -- -- 49.4
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)
2.4 2.46 99.9 0.351 -- -- -- --

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 2.4 24.4 -- 2.0 -- 10246 490 96.1 -- 0.21 0.21 0.297 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 45.8
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.55
x_dihedral_angle_d 21.7
x_angle_deg 1.68
x_bond_d 0.013
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.47
Luzzati Resolution Cutoff (Low) 25.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2044
Nucleic Acid Atoms 0
Heterogen Atoms 21
Solvent Atoms 26

Software

Software
Software Name Purpose
X-PLOR refinement version: 3.1
DENZO data reduction
SCALEPACK data scaling
AMoRE phasing