3JW3

Crystal structure of Bacillus anthracis (F96I) dihydrofolate reductase complexed with NADPH and Trimethoprim

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.75	298	Initially grown in 25% PEG 10000, 0.1 M MES. Macroseeding in 10% PEG 10000, 0.1 M MES. Trimethoprim soaked into seeds, pH 6.75, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.427	α = 90
b = 75.427	β = 90
c = 67.462	γ = 90

Symmetry
Space Group	P 42

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	77.2	CCD	ADSC QUANTUM 315		2009-01-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.080900	NSLS	X29A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.57	41.85	99.66	0.11	0.11	22.1	7	11538	11538		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.57	2.64	96.23		0.407	0.407	3.2	4.7	806

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3EOB	2.57	41.85	11538	11538	579	99.66	0.22092	0.22092	0.21887	0.26189	RANDOM	34.196

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
r_dihedral_angle_2_deg	36.043
r_dihedral_angle_3_deg	17.773
r_dihedral_angle_4_deg	11.762
r_dihedral_angle_1_deg	6.095
r_scangle_it	2.043
r_angle_refined_deg	1.371
r_scbond_it	1.214
r_mcangle_it	1.052
r_mcbond_it	0.579
r_nbtor_refined	0.308

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.043
r_dihedral_angle_3_deg	17.773
r_dihedral_angle_4_deg	11.762
r_dihedral_angle_1_deg	6.095
r_scangle_it	2.043
r_angle_refined_deg	1.371
r_scbond_it	1.214
r_mcangle_it	1.052
r_mcbond_it	0.579
r_nbtor_refined	0.308
r_symmetry_vdw_refined	0.229
r_nbd_refined	0.199
r_xyhbond_nbd_refined	0.122
r_symmetry_hbond_refined	0.109
r_chiral_restr	0.094
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2754
Nucleic Acid Atoms
Solvent Atoms	38
Heterogen Atoms	138

Software

Software
Software Name	Purpose
CBASS	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling

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.