2A3N

Crystal structure of a putative glucosamine-fructose-6-phosphate aminotransferase (stm4540.s) from salmonella typhimurium lt2 at 1.35 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	8.2	273	0.2M Na3Citrate, 20.0% PEG-3350, No Buffer pH 8.2, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 273K

Crystal Properties
Matthews coefficient	Solvent content
1.83	32.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.22	α = 90
b = 102.61	β = 123.21
c = 49.296	γ = 90

Symmetry
Space Group	C 1 2 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	MARMOSAIC 325 mm CCD		2005-06-05	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91162, 0.97932, 0.97920	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	1.23	28.33	76.4	0.067	0.067	6.4	3.5		74674

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	1.23	1.26	17.3		0.386	0.386	1.9	2

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.23	28.33	70950	3724	76.5	0.113	0.113	0.112	0.14	RANDOM	10.369

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]
0.28		-0.41	-0.34		-0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.006
r_dihedral_angle_4_deg	17.719
r_dihedral_angle_3_deg	11.375
r_sphericity_free	9.193
r_dihedral_angle_1_deg	5.507
r_scangle_it	5.307
r_scbond_it	4.293
r_sphericity_bonded	3.552
r_mcangle_it	3.067
r_rigid_bond_restr	2.599
r_mcbond_it	2.525
r_angle_refined_deg	1.63
r_mcbond_other	1.44
r_angle_other_deg	0.895
r_symmetry_vdw_refined	0.383
r_symmetry_vdw_other	0.34
r_nbd_refined	0.246
r_symmetry_hbond_refined	0.212
r_nbtor_refined	0.192
r_nbd_other	0.191
r_xyhbond_nbd_refined	0.162
r_chiral_restr	0.102
r_nbtor_other	0.089
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2684
Nucleic Acid Atoms
Solvent Atoms	478
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing
SHARP	phasing