6MQH

Crystal structure of 4-hydroxy-tetrahydrodipicolinate synthase (HTPA synthase) from Burkholderia mallei

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	290	23.87 mg/mL BumaA.01563.a.B1.PW38480 + 5 mM AMPPNP + 5 mM magnesium chloride against Molecular Dimensions Morpheus screen, E3 (10% w/v PEG4000, 20% v/v glycerol, 30 mM diethyleneglycol, 30 mM triethyleneglycol, 30 mM tetraethyleneglycol, 30 mM pentaethyleneglycol, 100 mM MES/imidazole, pH 6.5), cryoprotecion: direct, tray 301751e3, puck egq4-8, for phasing, a crystal from an apo setup of the same protein from Rigaku Reagents JCSG+ screen C4 (10% PEG6000, 100 mM HEPES free acid/NaOH) was incubated for 10 seconds each in 12.5% 2.5 M sodium iodide in ethylene glycol and in 25% 2.5 M sodium iodide in ethylene glycol (625 mM final sodium iodide concentration) and directly vitrified, puck: OVZ1-3

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 150.87	α = 90
b = 53.93	β = 90
c = 78.63	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	100	CCD	RAYONIX MX-300		2018-08-08	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	RIGAKU SATURN 944+	RIGAKU VARIMAX	2018-09-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F
2	ROTATING ANODE	RIGAKU FR-E+ SUPERBRIGHT	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	1.7	44.474	99.5	0.061	0.067	0.999	19.01	6.081		71091			25.072

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.74	100		0.482	0.526	0.915	3.99	6.157

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.7	44.474	1.34	70904	1957	99.23	0.1683	0.1675	0.1948	21.7755

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.457
f_angle_d	0.95
f_chiral_restr	0.063
f_bond_d	0.008
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4340
Nucleic Acid Atoms
Solvent Atoms	805
Heterogen Atoms

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
ARP/wARP	model building
Coot	model building
PHENIX	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 R01GM133198.