1MGT

CRYSTAL STRUCTURE OF O6-METHYLGUANINE-DNA METHYLTRANSFERASE FROM HYPERTHERMOPHILIC ARCHAEON PYROCOCCUS KODAKARAENSIS STRAIN KOD1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		HANGING DROP VAPOR DIFFUSION, pH 8.0

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.23	α = 90
b = 86.22	β = 90
c = 39.83	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	290	DIFFRACTOMETER	WEISSENBERG	MIRRORS	1997-09-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-18B		Photon Factory	BL-18B

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	1.8	40	92.4	0.065	10.9	6.4		17669		1	16.96

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	1.8	1.86	76.8		0.16

Refinement

Statistics
Diffraction ID	Structure Solution Method	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	SIRAS	1.8	20	17597	825	98.4	0.173	0.171	0.218	RANDOM	21.23

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	24.4
p_staggered_tor	15.4
p_special_tor	15
p_scangle_it	3.751
p_scbond_it	2.4
p_mcangle_it	2.08
p_planar_tor	1.7
p_mcbond_it	1.548
p_planar_d	0.029
p_angle_d	0.023
p_bond_d	0.013
p_angle_deg
p_hb_or_metal_coord
p_plane_restr
p_chiral_restr
p_singtor_nbd
p_multtor_nbd
p_xhyhbond_nbd
p_xyhbond_nbd
p_orthonormal_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1333
Nucleic Acid Atoms
Solvent Atoms	129
Heterogen Atoms	15

Software

Software
Software Name	Purpose
CCP4	model building
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
CCP4	phasing