4XJL

Crystal structure of 7,8-diaminopelargonic acid synthase (BioA) from Mycobacterium tuberculosis, complexed with a HTS lead compound

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3TFT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293.15	25 mM HEPES pH 7.5, 50 mM NaCl, 0.1 mM TCEP Reservoir:10% PEG 8000, 0.1M magnesium chloride, 0.1M HEPES pH 7.5 Cryo: 15% PEG 400 in reservoir solution

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.294	α = 90
b = 66.008	β = 90
c = 203.634	γ = 90

Symmetry
Space Group	P 21 21 21

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 PILATUS 6M		2013-12-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.0	APS	17-ID

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	1.85	203.634	99.8	0.1	16	6.1		73689

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	1.85	1.856	100		0.392		6.4	777

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	3TFT	1.85	101.82	73689	3708	99.68	0.1914	0.1902	0.2138	RANDOM	15.8

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]
0.41			-0.55		0.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.995
r_dihedral_angle_4_deg	13.712
r_dihedral_angle_3_deg	13.47
r_dihedral_angle_1_deg	5.398
r_angle_refined_deg	1.206
r_chiral_restr	0.074
r_bond_refined_d	0.008
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6415
Nucleic Acid Atoms
Solvent Atoms	256
Heterogen Atoms	95

Software

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

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.