2I6G

Crystal structure of a putative methyltransferase (tehb, stm1608) from salmonella typhimurium lt2 at 1.90 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	8.5	277	0.2M NaOAc, 30.0% PEG-4000, 0.1M TRIS pH 8.5, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.29	45.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 100.889	α = 90
b = 60.155	β = 90
c = 72.249	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	100	CCD	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2006-07-02	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91837,0.97927,0.97913	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.8	29.604	100	0.115	0.115	5	3.6		35397

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	1.95	100		0.624	0.624	1.2	3.7	2584

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	MAD	THROUGHOUT	1.9	29.604	35356	1770	99.92	0.192	0.19	0.233	RANDOM	29.425

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]
2.26			-0.62		-1.64

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.235
r_dihedral_angle_3_deg	11.904
r_dihedral_angle_4_deg	11.496
r_dihedral_angle_1_deg	4.852
r_scangle_it	1.679
r_angle_refined_deg	1.426
r_mcangle_it	1.407
r_scbond_it	1.245
r_mcbond_it	0.943
r_angle_other_deg	0.825
r_mcbond_other	0.242
r_symmetry_vdw_other	0.223
r_nbd_refined	0.207
r_symmetry_hbond_refined	0.189
r_nbd_other	0.187
r_xyhbond_nbd_refined	0.187
r_nbtor_refined	0.183
r_chiral_restr	0.164
r_symmetry_vdw_refined	0.133
r_nbtor_other	0.087
r_xyhbond_nbd_other	0.066
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2931
Nucleic Acid Atoms
Solvent Atoms	388
Heterogen Atoms	50

Software

Software
Software Name	Purpose
MolProbity	model building
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing
RESOLVE	phasing