2H2N

Crystal structure of human soluble calcium-activated nucleotidase (SCAN) with calcium ion

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.8	293	8% PEG 4000, 0.2 M ammonium sulfate, 0.1M sodium acetate pH4.8, 10 mM CaCl2, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.094	α = 75.06
b = 52.368	β = 74.52
c = 77.426	γ = 79.47

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	RIGAKU RAXIS IV	OSMIC CONFOCAL MIRRORS	2005-11-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.54178

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.3	31.08	99.7	0.058	17.9	5.43		27727

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.3	2.38	99.3		0.178	4.9	5.13	2799

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	2.3	31.08	27727	1395	100	0.172	0.172	0.168	0.249	RANDOM	30.747

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
r_dihedral_angle_2_deg	34.252
r_dihedral_angle_4_deg	18.552
r_dihedral_angle_3_deg	16.648
r_dihedral_angle_1_deg	7.583
r_scangle_it	5.172
r_scbond_it	3.423
r_mcangle_it	2.144
r_angle_refined_deg	2.136
r_mcbond_it	1.287
r_nbtor_refined	0.313

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.252
r_dihedral_angle_4_deg	18.552
r_dihedral_angle_3_deg	16.648
r_dihedral_angle_1_deg	7.583
r_scangle_it	5.172
r_scbond_it	3.423
r_mcangle_it	2.144
r_angle_refined_deg	2.136
r_mcbond_it	1.287
r_nbtor_refined	0.313
r_symmetry_vdw_refined	0.269
r_nbd_refined	0.228
r_xyhbond_nbd_refined	0.178
r_chiral_restr	0.144
r_symmetry_hbond_refined	0.102
r_metal_ion_refined	0.07
r_bond_refined_d	0.027
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4998
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	6

Software

Software
Software Name	Purpose
d*TREK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data reduction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.