3SA1

Bacuills anthracis Dihydrofolate Reductase bound propargyl-linked TMP analog, UCP1021

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3E0B	PDB entry 3E0B

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	initial crystal hits were grown in 27.5% (w/v) PEG 10,000, 0.1 M MES, pH 6.50, at an equal ratio of protein to crystallization solution. Microseeding was used to obtain isolated crystals in 10% (w/v) PEG 10,000 and 0.1 MES, pH 6.50 at a protein concentration of 5 mg/mL, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.094	α = 90
b = 78.094	β = 90
c = 67.07	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	100	IMAGE PLATE	RIGAKU RAXIS IV++		2010-12-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	2.5	42.63	99.3	0.138	0.138	5.2	3.2	13990	13990		5

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	2.5	2.57	98.6		0.383	0.383	2.4	3.3	966

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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 3E0B	2.5	42.63	3	13963	13963	699	99.08	0.2304	0.2304	0.229	0.257	RANDOM	30.7904

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	37.242
r_dihedral_angle_3_deg	15.306
r_dihedral_angle_4_deg	11.501
r_dihedral_angle_1_deg	6.113
r_scangle_it	2.156
r_angle_refined_deg	1.337
r_scbond_it	1.281
r_mcangle_it	1.076
r_mcbond_it	0.565
r_chiral_restr	0.087
r_bond_refined_d	0.01
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2750
Nucleic Acid Atoms
Solvent Atoms	35
Heterogen Atoms	150

Software

Software
Software Name	Purpose
d*TREK	data scaling
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
d*TREK	data reduction