7BF2

Ca2+-Calmodulin in complex with human muscle form creatine kinase peptide in extended 1:2 binding mode

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	293	25% PEG 1500, 0.1 M SPG buffer pH 4-5. CaM-CKBpeptide ratios of 1:4

Crystal Properties
Matthews coefficient	Solvent content
1.77	30.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.695	α = 90
b = 24.53	β = 104.838
c = 60.349	γ = 90

Symmetry
Space Group	C 1 2 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	PIXEL	DECTRIS PILATUS3 6M		2018-03-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID30B	0.97625	ESRF	ID30B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	1.43	34.346	97.13	0.05134	0.999	14.6	7		27542			23.52

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.43	1.481	91.07		1.506	0.515	0.96

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2l7l	1.43	34.346	27541	1334	97.459	0.202	0.2006	0.2281	35.196

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]
1.079		-0.155	0.142		-0.999

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.679
r_dihedral_angle_3_deg	17.569
r_dihedral_angle_4_deg	17.529
r_lrange_it	7.795
r_lrange_other	7.785
r_scangle_it	6.673
r_scangle_other	6.673
r_dihedral_angle_1_deg	5.174
r_scbond_other	4.422
r_scbond_it	4.42
r_mcangle_other	3.781
r_mcangle_it	3.779
r_mcbond_it	2.756
r_mcbond_other	2.753
r_angle_refined_deg	1.762
r_angle_other_deg	0.702
r_nbd_other	0.28
r_nbd_refined	0.253
r_symmetry_nbd_refined	0.239
r_symmetry_nbd_other	0.211
r_xyhbond_nbd_refined	0.208
r_nbtor_refined	0.179
r_symmetry_xyhbond_nbd_refined	0.149
r_metal_ion_refined	0.108
r_symmetry_metal_ion_refined	0.096
r_symmetry_nbtor_other	0.095
r_chiral_restr	0.09
r_symmetry_xyhbond_nbd_other	0.05
r_bond_refined_d	0.013
r_gen_planes_refined	0.009
r_bond_other_d	0.007
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1380
Nucleic Acid Atoms
Solvent Atoms	87
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
MOLREP	phasing