4XUG

Crystal structure of Tryptophan Synthase from Salmonella typhimurium in complex with 2-({[4-(Trifluoromethoxy)Phenyl]Sulfonyl}Amino)Ethyl Dihydrogen Phosphate (F9F) inhibitor in the alpha site and ammonium ion in the metal coordination site.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.8	298	50 mM Bicine-NH4OH, 7-12% PEG 8,000, 2 mM Spermine, pH 7.8, 100mM NH4Cl

Crystal Properties
Matthews coefficient	Solvent content
2.51	50.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 181.883	α = 90
b = 58.86	β = 94.67
c = 67.303	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	IMAGE PLATE	RIGAKU RAXIS IV++		2012-02-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	1.65	29.43	98.7	0.08	0.08	0.093	0.035	0.997	11.7	6.3	84215	84215

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.65	1.74	97		0.335	0.039	0.017	0.949	3.3	6	11986

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	1.65	29.43	84147	4194	98.44	0.1663	0.1648	0.1935	RANDOM	22.31

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]
0.02		-0.02	-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.506
r_dihedral_angle_4_deg	18.292
r_dihedral_angle_3_deg	12.991
r_dihedral_angle_1_deg	6.082
r_angle_refined_deg	1.789
r_scbond_it	1.577
r_mcangle_it	1.526
r_mcbond_it	0.946
r_chiral_restr	0.125
r_bond_refined_d	0.017

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.506
r_dihedral_angle_4_deg	18.292
r_dihedral_angle_3_deg	12.991
r_dihedral_angle_1_deg	6.082
r_angle_refined_deg	1.789
r_scbond_it	1.577
r_mcangle_it	1.526
r_mcbond_it	0.946
r_chiral_restr	0.125
r_bond_refined_d	0.017
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4994
Nucleic Acid Atoms
Solvent Atoms	760
Heterogen Atoms	42

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.