1BHO

MAC-1 I DOMAIN MAGNESIUM COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5		CRYSTALS WERE GROWN BY VAPOR DIFFUSION ON SITTING DROP BRIDGES. THE WELL MIX OF 20-24% PEG6000 BUFFERED WITH 100 MM NA ACETATE PH 5.0 WAS MIXED 1:1 WITH 3 UL OF I DOMAIN PROTEIN (20-30 MG/ML, 50 MM HEPES PH 7.0, 0.025% NA AZIDE). CRYSTALS WERE STABLIZED IN 100MM MGCL2, 100 MM NA ACETATE 5.0, 26% PEG6000 FOR DATA COLLECTION., vapor diffusion - sitting drop

Crystal Properties
Matthews coefficient	Solvent content
2.62	53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.59	α = 90
b = 123.27	β = 90
c = 75.65	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	287	AREA DETECTOR	SIEMENS		1996-07-26	M

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

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.7	10	60.1	0.101	12.8	4.5		9414		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.6	2.9	45		0.221	4.2	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	ISOMORPHOUS TO KNOWN PDB ENTRY 1IDN	CD11B I DOMAIN METAL FREE PDB ENTRY 1IDN	2.7	10	2	9414		60.4	0.181	0.181		14.87

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_transverse_tor	23.9
p_staggered_tor	10.7
p_planar_tor	2.3
p_scangle_it	1.772
p_mcangle_it	1.19
p_scbond_it	1.028
p_mcbond_it	0.677
p_xyhbond_nbd	0.241
p_multtor_nbd	0.239
p_chiral_restr	0.214
p_singtor_nbd	0.196
p_angle_d	0.037
p_planar_d	0.035
p_bond_d	0.017
p_plane_restr	0.013
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3059
Nucleic Acid Atoms
Solvent Atoms	125
Heterogen Atoms	2

Software

Software
Software Name	Purpose
PROLSQ	refinement
XENGEN	data reduction
XENGEN	data scaling