6AYW

The structure of human CamKII with bound inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	CamKII 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 microL 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 coefficient	Solvent content
2.33	47.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.149	α = 90
b = 68.11	β = 94.558
c = 84.825	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315r		2012-12-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.0	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.05	50	94.9	18.7	2.8		36488

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2.05	47.23	1.337	36326	2008	93.74	0.202	0.1985	0.2669	38.2

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
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.31
f_angle_d	0.868
f_chiral_restr	0.051
f_bond_d	0.007
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4712
Nucleic Acid Atoms
Solvent Atoms	259
Heterogen Atoms	72

Software

Software
Software Name	Purpose
HKL-2000	data processing
EPMR	phasing
PHENIX	refinement