X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop Microseeding
pH 5.2
Details DIFFRACTION-QUALITY CRYSTALS WERE MICROSEEDED IN HANGING DROPS OVER 100 MM SODIUM ACETATE AT PH 5.2, WITH 20% POLY-ETHYLENE GLYCOL 6000 (PEG 6000), 10 MM CALCIUM CHLORIDE AND 0.02% SODIUM AZIDE. STOCK SOLUTIONS OF 24 MG/ML BOVINE BRAIN CALMODULIN (SIGMA LOT 54H9558), 14 MG/ML CAMKII-ALPHA PEPTIDE, AND 30% PEG WERE MIXED INTO HANGING DROPS IN ABOUT A 4-2-1 RATIO., vapor diffusion - hanging drop - microseeding

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.75 α = 90
b = 75.21 β = 90
c = 120.07 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 302
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD PRINCETON 2K MIRRORS 1996-05
Diffraction Radiation
Monochromator Protocol
SINGLE-CRYSTAL --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F2 -- CHESS F2

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 10 92.1 -- 0.061 -- -- -- 11522 -- 2.0 22.5
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)
2.0 2.07 82.8 -- 0.24 -- -- --

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 2.0 10.0 -- 2.0 -- 11522 1189 92.1 -- 0.234 0.234 0.302 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 2.0 2.07 -- 128 964 0.344 0.369 0.033 82.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 41.4
RMS Deviations
Key Refinement Restraint Deviation
x_mcangle_it 3.88
x_scangle_it 5.47
x_bond_d 0.009
x_angle_deg 2.3
x_dihedral_angle_d 21.8
x_improper_angle_d 0.72
x_scbond_it 3.31
x_mcbond_it 2.22
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.29
Luzzati Sigma A (Observed) 0.31
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.34
Luzzati Sigma A (R-Free Set) 0.29
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1258
Nucleic Acid Atoms 0
Heterogen Atoms 5
Solvent Atoms 58

Software

Software
Software Name Purpose
X-PLOR model building version: 3.851
X-PLOR refinement version: 3.851
DENZO data reduction
SCALEPACK data scaling
X-PLOR phasing version: 3.851