4H96

Candida albicans dihydrofolate reductase complexed with NADPH and 5-{3-[3-(2,3-dihydro-1,4-benzodioxin-6-yl)-5-methoxyphenyl]prop-1-yn-1-yl}-6-ethylpyrimidine-2,4-diamine (UCP1018)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AOE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	PEG 3350, KMES, glycine, pH 6.5, vapor diffusion, hanging drop, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.17	61.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.665	α = 90
b = 118.665	β = 90
c = 39.331	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	IMAGE PLATE	RIGAKU RAXIS IV++		2010-10-26	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)	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	2.6	37.53	99.9	0.113	9	6.61	17831	17831	3	3

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	2.6	2.69	99.9		0.555	2.8	6.75	1745

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	1AOE	2.6	37.53	17810	17810	933	99.68	0.2486	0.2486	0.2478	0.2648	RANDOM	47.5026

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]
-0.01			-0.02		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.754
r_dihedral_angle_3_deg	11.504
r_dihedral_angle_4_deg	5.981
r_dihedral_angle_1_deg	2.746
r_angle_refined_deg	0.801
r_mcangle_it	0.067
r_scangle_it	0.05
r_chiral_restr	0.046
r_mcbond_it	0.038
r_scbond_it	0.028

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.754
r_dihedral_angle_3_deg	11.504
r_dihedral_angle_4_deg	5.981
r_dihedral_angle_1_deg	2.746
r_angle_refined_deg	0.801
r_mcangle_it	0.067
r_scangle_it	0.05
r_chiral_restr	0.046
r_mcbond_it	0.038
r_scbond_it	0.028
r_bond_refined_d	0.006
r_gen_planes_refined	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3078
Nucleic Acid Atoms
Solvent Atoms	9
Heterogen Atoms	156

Software

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

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.