3OM7

Crystal structure of B. megaterium levansucrase mutant Y247W

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.1	298	USING 3 uL OF A 8 MG/ML PROTEIN SOLUTION MIXED WITH 3 uL RESERVOIR BUFFER (0.1 M Na-Phosphate-citrate pH 4.1; 0.2 M lithiumsulfate; 20% (w/v) PEG 1000) IN THE DROPLET. , VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.527	α = 90
b = 100.052	β = 90.51
c = 95.45	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	CCD	MX-225 (Rayonics LLC)		2009-04-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.2	0.91841	BESSY	14.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.86	50.01	98.1			135669	133091	-3	-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.86	2	92.4

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.86	50.01	135669	135653	6781	91.84	0.2014	0.2014	0.2006	0.2159	RANDOM	16.7049

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]
-1.44		2.71	-13.51		14.95

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.226
r_dihedral_angle_4_deg	16.845
r_dihedral_angle_3_deg	12.743
r_dihedral_angle_1_deg	5.825
r_scangle_it	1.228
r_angle_refined_deg	0.992
r_scbond_it	0.752
r_mcangle_it	0.642
r_mcbond_it	0.352
r_chiral_restr	0.068
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14176
Nucleic Acid Atoms
Solvent Atoms	1094
Heterogen Atoms	100

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
DNA	data collection
XDS	data reduction
SCALA	data scaling
MOLREP	phasing