6X0C

Tryptophan Synthase mutant beta-Q114A in complex with Cesium ion at the metal coordination site and aminoacrylate and benzimidazole at the enzyme beta site

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6VFD

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
2.62	53.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 183.133	α = 90
b = 59.336	β = 95.11
c = 67.419	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	PIXEL	DECTRIS PILATUS3 6M		2018-03-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.979200	APS	24-ID-C

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	1.45	40	100	0.104	0.104	0.111	0.03	0.998	13.7	13.3		127033

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	1.45	1.53	99.9		1.103	1.103	1.173	0.323	0.6	13

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	6VFD	1.45	39.39	120752	6260	99.49	0.1656	0.1636	0.202	RANDOM	27.857

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]
0.68		0.35	-1.05		0.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.652
r_dihedral_angle_4_deg	17.015
r_dihedral_angle_3_deg	13.533
r_dihedral_angle_1_deg	6.671
r_rigid_bond_restr	3.795
r_angle_refined_deg	1.57
r_angle_other_deg	1.485
r_chiral_restr	0.081
r_bond_refined_d	0.009
r_gen_planes_refined	0.008

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.652
r_dihedral_angle_4_deg	17.015
r_dihedral_angle_3_deg	13.533
r_dihedral_angle_1_deg	6.671
r_rigid_bond_restr	3.795
r_angle_refined_deg	1.57
r_angle_other_deg	1.485
r_chiral_restr	0.081
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4894
Nucleic Acid Atoms
Solvent Atoms	608
Heterogen Atoms	100

Software

Software
Software Name	Purpose
HKL-2000	data collection
SCALA	data scaling
PHASER	phasing
PARROT	phasing
REFMAC	refinement
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.