X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details DROPS WERE PREPARED BY MIXING 2 MICROLITERS OF PURIFIED DIMER AT 25MG/ML WITH AN EQUAL VOLUME OF BUFFER (30% W/V PEG-400, 1.0 M LITHIUM SULPHATE, AND 1 MM CALCIUM CHLORIDE, IN 0.1 M TRIS-HCL AT PH 7.5), WHICH WAS ALSO USED AS THE WELL BUFFER (1 ML).

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 68.27 α = 90
b = 68.27 β = 90
c = 60.83 γ = 120
Symmetry
Space Group P 6 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH BENT MIRROR 1996-06-24
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 -- EMBL/DESY, HAMBURG X11

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
1.8 22.3 99.7 0.081 0.078 -- 10.6 -- 8153 -- -- 23.5
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)
1.8 1.9 100.0 0.338 0.325 2.3 10.8 --

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 1.8 22.0 -- 0.0 -- 7358 795 99.7 -- -- 0.24 0.3 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 32.2
Anisotropic B[1][1] -6.1
Anisotropic B[1][2] -5.1
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -9.0
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 23.9
RMS Deviations
Key Refinement Restraint Deviation
p_special_tor 15.0
p_transverse_tor 8.8
p_staggered_tor 16.9
p_planar_tor 4.7
p_xyhbond_nbd 0.09
p_multtor_nbd 0.25
p_bond_d 0.016
p_angle_d 0.034
p_planar_d 0.033
p_mcbond_it 1.64
p_mcangle_it 2.38
p_scbond_it 2.57
p_scangle_it 3.86
p_plane_restr 0.026
p_chiral_restr 0.15
p_singtor_nbd 0.19
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 481
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 55

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
AMORE Structure Solution
REFMAC Structure Refinement
Software
Software Name Purpose
REFMAC refinement
AMORE model building