1R6W

Crystal structure of the K133R mutant of o-Succinylbenzoate synthase (OSBS) from Escherichia coli. Complex with SHCHC

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	5.5	293	The K133R mutant of OSBS was concentrated to 15 mg/ml, dialyzed against 5 mM Tris pH 8.3 containing 2 mM MgCl2, drop frozen as small pellets in liquid nitrogen and stored at -80 C. Crystals were grown at 20 C by small-scale batch experiments by combining 15 ml of protein solution and 15 ml of a solution containing 12-13% MePEG 5000, 100 mM sodium acetate, 60 mM MgCl2, at pH 5.5. SHCHC was included in the crystallization at a final concentration of approximately 2.5 mM., microbatch, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.2	α = 90
b = 82.9	β = 90
c = 56.2	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	150					M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-D	0.9790	APS	14-BM-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.62	31	99.9	0.046	41	7.1	43694	43694			25.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.62	1.68	98.9		0.293	17.1

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	1fhv	1.62	30	41456	41456	2190	99.82	0.16911	0.1691	0.16743	0.20024	RANDOM	17.89

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]
-0.58			-1.38		1.96

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.573
r_scangle_it	4.732
r_scbond_it	3.057
r_mcangle_it	2.162
r_angle_refined_deg	1.615
r_angle_other_deg	1.237
r_mcbond_it	1.236
r_symmetry_vdw_refined	0.31
r_symmetry_vdw_other	0.287
r_nbd_other	0.253
r_nbd_refined	0.247
r_xyhbond_nbd_refined	0.161
r_symmetry_hbond_refined	0.155
r_chiral_restr	0.094
r_nbtor_other	0.087
r_bond_refined_d	0.016
r_gen_planes_refined	0.009
r_gen_planes_other	0.008
r_bond_other_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2488
Nucleic Acid Atoms
Solvent Atoms	344
Heterogen Atoms	18

Software

Software
Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction