3JVX

Crystal structure of Bacillus anthracis dihydrofolate reductase complexed with NADPH and 2,4-diamino-5-(3-(3,4,5-trimethoxyphenyl)prop-1-ynyl)-6-ethylpyrimidine (UCP120A)

X-RAY DIFFRACTION

Starting Model(s)

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

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, pH 6.75, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.55	51.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.241	α = 90
b = 78.241	β = 90
c = 66.79	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		2008-08-17	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	2.25	28.59	99.91	0.142	0.142	12.6	6.6	18299	18299		-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	2.25	2.31	99.37		0.512	0.512	3	6.5	989

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	2.25	28.59	18299	18299	989	99.91	0.18163	0.18163	0.18023	0.20764	RANDOM	27.466

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	36.374
r_dihedral_angle_4_deg	18.528
r_dihedral_angle_3_deg	14.125
r_dihedral_angle_1_deg	6.057
r_scangle_it	2.323
r_scbond_it	1.453
r_angle_refined_deg	1.323
r_mcangle_it	1.072
r_mcbond_it	0.62
r_nbtor_refined	0.306

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.374
r_dihedral_angle_4_deg	18.528
r_dihedral_angle_3_deg	14.125
r_dihedral_angle_1_deg	6.057
r_scangle_it	2.323
r_scbond_it	1.453
r_angle_refined_deg	1.323
r_mcangle_it	1.072
r_mcbond_it	0.62
r_nbtor_refined	0.306
r_symmetry_vdw_refined	0.216
r_nbd_refined	0.18
r_xyhbond_nbd_refined	0.14
r_symmetry_hbond_refined	0.138
r_chiral_restr	0.084
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2780
Nucleic Acid Atoms
Solvent Atoms	234
Heterogen Atoms	146

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 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.