3CZT

Crystal Structure of S100B in the Calcium and Zinc Loaded State at pH 9

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	291	0.02 M TAPS, pH 9.0, 30% PEG4000, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.98	α = 90
b = 89.26	β = 90
c = 59.58	γ = 90

Symmetry
Space Group	C 2 2 21

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		2004-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	0.91853	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	1.4	17.8	97	0.052	18.42			18236		-3	21.159

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)
	1.4	1.55	89.4		0.213	5.1	2.9	4340

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	1.4	17.8	18231	911	100	0.164	0.162	0.222	RANDOM	13.039

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]
-0.04			0.05		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.699
r_dihedral_angle_3_deg	12.595
r_dihedral_angle_4_deg	12.336
r_sphericity_free	8.446
r_scangle_it	5.199
r_dihedral_angle_1_deg	4.54
r_scbond_it	4.066
r_sphericity_bonded	4.015
r_rigid_bond_restr	2.49
r_mcangle_it	2.43
r_mcbond_it	1.733
r_angle_refined_deg	1.485
r_angle_other_deg	1.313
r_mcbond_other	0.773
r_chiral_restr	0.104
r_bond_refined_d	0.019
r_gen_planes_refined	0.008
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	739
Nucleic Acid Atoms
Solvent Atoms	181
Heterogen Atoms	4

Software

Software
Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction