6WX3

High resolution Tryptophan Synthase crystal structure from Salmonella typhimurium in complex with F9 inhibitor in the alpha-site, Cesium ion at the metal coordination site and internal aldimine form.

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4HT3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.8	298	50 mM Bicine-CsOH, 10% PEG 8,000, 2 mM Spermine, pH 7.8

Crystal Properties
Matthews coefficient	Solvent content
2.54	51.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 182.118	α = 90
b = 59.06	β = 94.84
c = 67.405	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	ADSC QUANTUM 315r		2012-05-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 12.3.1	1.000	ALS	12.3.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	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	1.2	90.735	96.3	0.103	0.12	0.047	9.1	6.6	212937	212937

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.2	1.26	94.4		0.975	0.975	1.185	0.599	0.6	3.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	4HT3	1.2	36.23	202430	10452	95.87	0.1564	0.1551	0.1813	RANDOM	17.604

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]
0.9		0.28	-1.67		0.71

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.151
r_dihedral_angle_4_deg	18.168
r_dihedral_angle_3_deg	12.299
r_dihedral_angle_1_deg	6.221
r_rigid_bond_restr	6.129
r_angle_refined_deg	1.352
r_chiral_restr	0.097
r_gen_planes_refined	0.008
r_bond_refined_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4963
Nucleic Acid Atoms
Solvent Atoms	850
Heterogen Atoms	97

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
DM	phasing
PDB_EXTRACT	data extraction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.