3OM2

Crystal structure of B. megaterium levansucrase mutant D257A

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.1	298	SING 3 uL OF A 8 MG/ML PROTEIN SOLUTION MIXED WITH 3 uL RESERVOIR BUFFER (0.1 M Na-Phosphate-citrate pH 4.1; 0.1 M MgSO4; 30% (w/v) PEG 400) IN THE DROPLET. , VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.003	α = 90
b = 55.289	β = 90
c = 163.614	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 210r		2007-09-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM16	0.97881	ESRF	BM16

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	1.9	30	99.9			35974	35938	-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	1.9	2	99.9

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	1.9	30	35974	35907	1796	99.94	0.164	0.1634	0.1606	0.2175	RANDOM	9.2317

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]
-0.59			1.09		-0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.328
r_dihedral_angle_3_deg	13.255
r_dihedral_angle_4_deg	13.08
r_dihedral_angle_1_deg	6.542
r_scangle_it	2.842
r_scbond_it	1.889
r_angle_refined_deg	1.315
r_mcangle_it	1.111
r_mcbond_it	0.69
r_chiral_restr	0.096
r_bond_refined_d	0.015
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3539
Nucleic Acid Atoms
Solvent Atoms	657
Heterogen Atoms	29

Software

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