3NSI

Crystal Structure of the Post-Refolded S100A3 Protein Expressed in Insect Cell

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3NSK	PDB ENTRY 3NSK

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	293	Ammonium Sulfate, 0.1M Bicine, pH 9, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.68	α = 90
b = 58.68	β = 90
c = 45.763	γ = 120

Symmetry
Space Group	P 31

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	CCD	ADSC QUANTUM 270		2009-10-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NE3A	1	Photon Factory	AR-NE3A

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	2.15	50	99.9			9695	9598

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	2.15	2.19	100

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	PDB ENTRY 3NSK	2.15	30	9695	9113	471	99.9	0.20501	0.20501	0.20341	0.23645	RANDOM	44.159

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]
-0.37	-0.19		-0.37		0.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	24.839
r_dihedral_angle_3_deg	12.23
r_dihedral_angle_4_deg	11.317
r_scangle_it	7.297
r_scbond_it	4.426
r_dihedral_angle_1_deg	3.486
r_mcangle_it	2.744
r_mcbond_it	1.522
r_angle_refined_deg	0.607
r_chiral_restr	0.039
r_bond_refined_d	0.003
r_gen_planes_refined	0.002
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1519
Nucleic Acid Atoms
Solvent Atoms	25
Heterogen Atoms

Software

Software
Software Name	Purpose
ADSC	data collection
CNS	refinement
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing