3BUL

E. coli I690C/G743C MetH C-terminal fragment (649-1227)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	7.2	310	0.2 M potassium nitrate, and 20 % (w/v) PEG3350, pH 7.2, EVAPORATION, temperature 310K

Crystal Properties
Matthews coefficient	Solvent content
2.99	58.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.529	α = 90
b = 106.529	β = 90
c = 137.15	γ = 90

Symmetry
Space Group	P 43 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		CCD	MARMOSAIC 300 mm CCD	K-B pair of biomorph mirrors for vertical and horizontal focusing	2007-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.9793	APS	23-ID-B

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	2.29	42.07	99.2	0.146	0.151	16	17.306		35908			42.722

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	2.29	2.43	95.3		0.809	0.838	3.46	15.01	5516

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1K7Y	2.3	42.07	35738	35737	1773	100	0.228	0.2	0.198	0.247	RANDOM	40.387

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]
-0.08			-0.08		0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.638
r_dihedral_angle_4_deg	23.126
r_dihedral_angle_3_deg	18.626
r_dihedral_angle_1_deg	6.717
r_scangle_it	5.549
r_scbond_it	3.585
r_angle_refined_deg	2.318
r_mcangle_it	2.271
r_mcbond_it	1.36
r_nbtor_refined	0.323
r_symmetry_vdw_refined	0.258
r_nbd_refined	0.251
r_chiral_restr	0.234
r_symmetry_hbond_refined	0.202
r_xyhbond_nbd_refined	0.171
r_bond_refined_d	0.025
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4572
Nucleic Acid Atoms
Solvent Atoms	63
Heterogen Atoms	91

Software

Software
Software Name	Purpose
XSCALE	data scaling
EPMR	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
XDS	data reduction