1MHO

THE 2.0 A STRUCTURE OF HOLO S100B FROM BOVINE BRAIN

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		VITAMIN D-DEPENDENT CALCIUM-BINDING PROTEIN FROM BOVINE INTESTINE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8		HANGING-DROP VAPOR DIFFUSION METHOD, pH 8.0, vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.24	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.16	α = 90
b = 89.66	β = 90
c = 58.35	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	298	IMAGE PLATE	RIGAKU		1995-10-02	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R

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	30	93.8	0.061	7	2.7		6282		1	27.73

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	2	2.15	91.3		0.171

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	VITAMIN D-DEPENDENT CALCIUM-BINDING PROTEIN FROM BOVINE INTESTINE	2	10	5942	287		0.195	0.286	31.69

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
p_staggered_tor	15.3
p_scangle_it	4.707
p_planar_tor	3.8
p_mcangle_it	2.971
p_scbond_it	2.959
p_mcbond_it	2.259
p_multtor_nbd	0.189
p_singtor_nbd	0.184
p_xyhbond_nbd	0.169
p_chiral_restr	0.163
p_planar_d	0.036
p_angle_d	0.035
p_bond_d	0.017
p_angle_deg
p_hb_or_metal_coord
p_plane_restr
p_xhyhbond_nbd
p_orthonormal_tor
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	711
Nucleic Acid Atoms
Solvent Atoms	59
Heterogen Atoms	2

Software

Software
Software Name	Purpose
X-PLOR	model building
REFMAC	refinement
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing