X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293CamKII S3-K301, in 20mM imidazole pH 8.5, 0.3M sodium chloride, 5mM TCEP, was concentrated to 36 mg/ml and flash frozen in liquid nitrogen for long term storage at -80 C in 10 uL aliquots. The protein was thawed and diluted down to 12 mg/mL in the same buffer just prior to crystallization experiments. Sitting drop vapor diffusion droplets were assembled with 250 nL of 12 mg/mL CamKII, 0.6 mM inhibitor and 250 nL of reservoir solution 24% peg 3350, 0.2 M ammonium tartrate, 0.1 M arginine. Flat crystal plates (typically 0.03 mm x 0.2 mm x 0.4 mm in size) grew in 4-7 days at 20 C. A crystal seed suspension was prepared with ten crushed crystals combined into 100 uL of reservoir solution and stored at -80 C. A thirty fold seed dilution was prepared in the same solution for addition to protein droplets in a 1 to 1 volume ratio to enhance crystallization of difficult to crystallize inhibitors.
Crystal Properties
Matthews coefficientSolvent content
2.3547.64

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 54.473α = 90
b = 67.546β = 94.111
c = 85.45γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS3 6M2016-02-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 5.0.21.0ALS5.0.2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)CC (Half)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.055098.50.99812.7133895934.660655594
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.052.17910.7421.6312.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE2.0547.381.3338959145399.96920787250.18370.18280.226141.0908881426
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d18.7907826226
f_angle_d0.517926131239
f_chiral_restr0.0412273122249
f_plane_restr0.00435645601269
f_bond_d0.00273610093055
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4694
Nucleic Acid Atoms
Solvent Atoms349
Heterogen Atoms94

Software

Software
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
EPMRphasing
PHENIXrefinement