X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 5.6
Temperature 295.0
Details pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 295.0K RESERVOIR: 20% PEG8000, 10 MM MGCL2, 0.1 M AMMONIUM SULFATE, 50 MM MES, PH 5.6; PROTEIN STOCK: 17.3 MG/ML IN 10 MM HEPES, PH 7.0; DROPS: 2 MICROLITERS OF PROTEIN STOCK + 4 MICROLITERS OF RESERVOIR SOLUTION

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 41.93 α = 89.98
b = 50.89 β = 71.98
c = 58.77 γ = 82.05
Symmetry
Space Group P 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD MAR CCD 165 mm -- 2002-11-03
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 22-ID 1.07175 APS 22-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
1.6 50 93.9 -- 0.041 -- 1.9 56662 56662 0.0 -3.0 18.1
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)
1.6 1.64 74.0 -- 0.281 3.1 0.8 2969

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 1.65 32.28 -- 0.0 52498 52498 2680 95.3 0.201 0.201 0.194 0.227 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 1.65 1.71 2942 226 3891 0.284 0.29 0.017 93.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 16.1
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 2.5
c_scbond_it 1.81
c_mcangle_it 1.57
c_mcbond_it 1.09
c_improper_angle_d 0.88
c_dihedral_angle_d 22.3
c_angle_deg 1.2
c_bond_d 0.004
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.19
Luzzati Sigma A (Observed) 0.11
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.12
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3452
Nucleic Acid Atoms 0
Heterogen Atoms 24
Solvent Atoms 601

Software

Computing
Computing Package Purpose
MAR Data Reduction (intensity integration)
HKL-2000 Data Reduction (data scaling)
AMORE Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement