4DUQ

The Structure of Ca2+-loaded S100A2 at 1.3A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4	293	0.1 mM Na+ acetate, 40% PEG 400, pH 4.0, vapor diffusion, hanging drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.72	54.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.67	α = 90
b = 84.67	β = 90
c = 58.3	γ = 120

Symmetry
Space Group	P 31 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	CCD	MARMOSAIC 225 mm CCD		2005-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	0.90	SLS	X06SA

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	1.3	45.63	99.9	0.038	30.22			59436		-3	28.286

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)
1	1.3	1.4	99.9		0.012	2.12

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.3	45.63	59434	2972	99.92	0.1376	0.136	0.168	RANDOM	35.576

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]
0.39	0.2		0.39		-0.59

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	44.904
r_dihedral_angle_2_deg	32.095
r_sphericity_bonded	30.748
r_dihedral_angle_3_deg	12.092
r_rigid_bond_restr	6.358
r_dihedral_angle_1_deg	4.718
r_angle_refined_deg	1.897
r_angle_other_deg	1.09
r_chiral_restr	0.126
r_bond_refined_d	0.019
r_gen_planes_refined	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1410
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms	17

Software

Software
Software Name	Purpose
XSCALE	data scaling
SHELX	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
SHELXD	phasing