2OFK

Crystal Structure of 3-methyladenine DNA glycosylase I (TAG)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	294	30% PEG 200, 5% PEG 3000, 100 mM MES pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.455	α = 90
b = 63.681	β = 106.94
c = 62.127	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate		2005-08-18	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.000, 0.9793, 0.9718, 0.9795	APS	22-ID

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	1.5	50	93.6	0.064	23.8	7	64266	64266			20.9

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)
	1.5	1.55	61.1		0.247	4.8	4.6	4195

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	MAD	THROUGHOUT	1.5	50	64237	60990	3247	93.55	0.16283	0.16113	0.19555	RANDOM	31.648

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]
-1.3		-1.35	2.64		-2.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.03
r_dihedral_angle_4_deg	14.712
r_dihedral_angle_3_deg	12.556
r_sphericity_free	7.053
r_dihedral_angle_1_deg	5.133
r_scangle_it	3.987
r_sphericity_bonded	3.385
r_scbond_it	2.838
r_mcangle_it	1.85
r_rigid_bond_restr	1.638
r_angle_refined_deg	1.427
r_mcbond_it	1.321
r_nbtor_refined	0.311
r_nbd_refined	0.206
r_symmetry_vdw_refined	0.197
r_symmetry_hbond_refined	0.149
r_xyhbond_nbd_refined	0.12
r_chiral_restr	0.091
r_bond_refined_d	0.014
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2901
Nucleic Acid Atoms
Solvent Atoms	328
Heterogen Atoms	73

Software

Software
Software Name	Purpose
REFMAC	refinement
SERGUI	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
SOLVE	phasing