X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Temperature 298.0
Details magnesium chloride, HEPES, PEG 3350, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.8 α = 90
b = 88.29 β = 103.08
c = 40.1 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD SBC-2 mirrors 2003-06-06
Diffraction Radiation
Monochromator Protocol
double crystal MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 19-ID 0.97926, 0.97945, 0.94644 APS 19-ID

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
1.75 37.8 93.7 0.094 -- -- 9.2 24853 24853 0.0 0.0 16.8
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)
1.75 1.81 63.8 0.262 0.065 -- 5.6 1664

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
MAD 1.75 37.8 -- 0.0 24630 24630 2439 92.7 -- 0.201 0.198 0.235 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 1.75 1.86 2693 297 2693 0.27 0.324 0.019 68.3
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.1
Anisotropic B[1][1] -0.67
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 2.78
Anisotropic B[2][2] -2.35
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 3.02
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.009
c_dihedral_angle_d 25.0
c_angle_deg 1.5
c_mcangle_it 2.54
c_mcbond_it 1.65
c_improper_angle_d 0.92
c_scangle_it 4.14
c_scbond_it 2.75
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.21
Luzzati Sigma A (Observed) 0.16
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.25
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2215
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 360

Software

Software
Software Name Purpose
CNS refinement version: 1.1
SBC-Collect data collection
HKL-2000 data scaling
CNS phasing
SOLVE phasing
ARP/wARP model building version: V. 6.0