Experiment: 3DUW

Crystal Structural Analysis of the O-methyltransferase from Bacillus cereus in complex SAH

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.2	295	0.1M citric acid, 0.25M LiCl, 20% PEG 6000, 2mM MgCl2, 1mM SAH, 3% dioxane as an additive, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.6	α = 90
b = 74.3	β = 90
c = 90.6	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	100	CCD	ADSC QUANTUM 210		2006-09-26	M	MAD
2	1	100	CCD	ADSC QUANTUM 210		2006-06-14

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PAL/PLS BEAMLINE 6C1	1.12713	PAL/PLS	6C1
2	SYNCHROTRON	PAL/PLS BEAMLINE 4A	0.979285, 0.979447, 0.971611	PAL/PLS	4A

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	1.2	50	95.7	0.135	25.7	14.2		131717	2

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	1.24	66.6		0.2	12.1	12.9	3975

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	using a random selection of data	1.2	32.44	2	109890	10976	78.1	0.221	0.2157	0.234	0.2301	RANDOM	13.252

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]
1.958			-4.19		2.232

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	2.792
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3422
Nucleic Acid Atoms
Solvent Atoms	430
Heterogen Atoms	52

Software

Software
Software Name	Purpose
HKL-2000	data collection
SOLVE	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling