1IDN

MAC-1 I DOMAIN METAL FREE

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 100 MM NA ACETATE 5.0; 26% PEG6000 FOR DATA COLLECTION., vapor diffusion - sitting drop

Crystal Properties
Matthews coefficient	Solvent content
2.48	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.32	α = 90
b = 124.05	β = 90
c = 76.38	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		1994-08-25	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	68	0.097	16.3	5.6		9011		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)
	2.7	2.94	39.8		0.173	4.6	2.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	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	MIR	2.7	10	2	9011		68	0.174	0.174		12.49

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	19.6
p_staggered_tor	9.4
p_planar_tor	2.3
p_scangle_it	1.458
p_mcangle_it	1.074
p_scbond_it	0.837
p_mcbond_it	0.61
p_xyhbond_nbd	0.261
p_multtor_nbd	0.256
p_chiral_restr	0.212
p_singtor_nbd	0.192
p_angle_d	0.037
p_planar_d	0.032
p_bond_d	0.018
p_plane_restr	0.012
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	179
Heterogen Atoms

Software

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