3C1V

The 1.5 A Crystal structure of Ca2+-bound S100A4

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9.5	293	40% PEG600, 0.1M CHES, pH9.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.09	41.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.32	α = 90
b = 52.32	β = 90
c = 139.14	γ = 120

Symmetry
Space Group	P 32

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 4	mirrors	2006-09-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-3	0.931	ESRF	ID14-3

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	1.5	50	99.5	0.102	9.46	3.75	68764	68427		2

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)
	1.5	1.59	98.9		0.448	3.14	3.69	11006

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1MHO	1.5	45.31	64569	3409	99.68	0.19627	0.19511	0.21796	RANDOM	16.508

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]
0.54	0.27		0.54		-0.81

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.424
r_dihedral_angle_3_deg	12.386
r_dihedral_angle_4_deg	8.569
r_dihedral_angle_1_deg	4.014
r_scangle_it	1.75
r_rigid_bond_restr	1.427
r_scbond_it	1.413
r_angle_refined_deg	0.965
r_sphericity_free	0.959
r_sphericity_bonded	0.794
r_mcangle_it	0.783
r_mcbond_it	0.492
r_nbtor_refined	0.299
r_nbd_refined	0.185
r_symmetry_vdw_refined	0.143
r_chiral_restr	0.074
r_metal_ion_refined	0.074
r_xyhbond_nbd_refined	0.071
r_symmetry_hbond_refined	0.068
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3254
Nucleic Acid Atoms
Solvent Atoms	552
Heterogen Atoms	8

Software

Software
Software Name	Purpose
REFMAC	refinement
MxCuBE	data collection
XDS	data reduction
XDS	data scaling
PHASER	phasing