2DPK

The Crystal Structure of the Primary Ca2+ Sensor of the Na+/Ca2+ Exchanger

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.624	α = 90
b = 45.524	β = 90
c = 57.269	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray						M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	1.0	ALS	8.2.2

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	2.5	90	93			5791	5386	2	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.5	57.26	5386	257	98.33	0.22514	0.22514	0.22233	0.28364	RANDOM	42.205

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]
-3.39			-3.22		6.62

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.302
r_dihedral_angle_4_deg	16.358
r_dihedral_angle_3_deg	12.107
r_dihedral_angle_1_deg	6.095
r_scangle_it	4.672
r_mcangle_it	4.574
r_mcbond_it	3.222
r_scbond_it	3.205
r_angle_refined_deg	1.326
r_mcbond_other	0.959
r_angle_other_deg	0.803
r_symmetry_vdw_other	0.229
r_nbd_refined	0.211
r_nbd_other	0.182
r_xyhbond_nbd_refined	0.176
r_nbtor_refined	0.171
r_symmetry_hbond_refined	0.152
r_metal_ion_refined	0.121
r_symmetry_vdw_refined	0.114
r_chiral_restr	0.082
r_nbtor_other	0.079
r_xyhbond_nbd_other	0.057
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	944
Nucleic Acid Atoms
Solvent Atoms	17
Heterogen Atoms	23

Software

Software
Software Name	Purpose
REFMAC	refinement