3IFK

Crystal Structure Of Calcium-Saturated Calmodulin N-terminal Domain Fragment, Residues 1-90

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	277.15	20% PEG8000, 5mM calcium-chloride, 100mM citrate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

Crystal Properties
Matthews coefficient	Solvent content
2.69	54.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.285	α = 90
b = 58.851	β = 90
c = 67.115	γ = 90

Symmetry
Space Group	P 21 21 21

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 210		2005-08-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.00	APS	17-ID

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	2.03	67.12	99.9			16668	16668

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.03	2.08	99.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.03	67.12	13983	13953	740	99.9	0.2401	0.2372	0.29314	RANDOM	31.118

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]
-0.23			-0.64		0.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.888
r_dihedral_angle_3_deg	23.295
r_dihedral_angle_4_deg	17.151
r_scangle_it	6.043
r_dihedral_angle_1_deg	5.883
r_scbond_it	3.881
r_angle_refined_deg	2.372
r_mcangle_it	2.193
r_mcbond_it	1.47
r_nbtor_refined	0.354

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.888
r_dihedral_angle_3_deg	23.295
r_dihedral_angle_4_deg	17.151
r_scangle_it	6.043
r_dihedral_angle_1_deg	5.883
r_scbond_it	3.881
r_angle_refined_deg	2.372
r_mcangle_it	2.193
r_mcbond_it	1.47
r_nbtor_refined	0.354
r_symmetry_vdw_refined	0.347
r_nbd_refined	0.311
r_chiral_restr	0.214
r_xyhbond_nbd_refined	0.196
r_metal_ion_refined	0.167
r_symmetry_hbond_refined	0.159
r_bond_refined_d	0.026
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1368
Nucleic Acid Atoms
Solvent Atoms	57
Heterogen Atoms	4

Software

Software
Software Name	Purpose
JDirector	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.