1M79

Candida albicans Dihydrofolate Reductase Complexed with Dihydro-Nicotinamide-Adenine-Dinucleotide Phosphate (NADPH) and 5-(4-methoxyphenoxy)-2,4-quinazolinediamine (GW1466)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AI9	CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH), 5-(4-METHOXYPHENOXY)-2,4-QUINAZOLINEDIAMINE (GW1466), PEG-3350, Potassium 4-morphilineethanesulfonic acid (MES), dithiothreitol (DTT), pH 6.50, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.27	43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.09	α = 90
b = 67.03	β = 93.3
c = 38.5	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	AREA DETECTOR	XENTRONICS	MONOCHROMATOR	1989-03-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ELLIOTT GX-21	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	1.7	50	83.45	0.0644	0.0644	21.1	2.45		36008		-3	33.74

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)
	1.7	1.8	99.9		0.1978	0.1978	3.7	1.79	2562

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	DIRECT REPLACEMENT	CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)	1.7	10	2	36010	33900		83.45	0.145

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
p_transverse_tor	32.2
p_staggered_tor	14.4
p_scangle_it	8.323
p_scbond_it	6.817
p_mcangle_it	5.461
p_mcbond_it	4.601
p_planar_tor	3.9
p_chiral_restr	0.245
p_singtor_nbd	0.164
p_multtor_nbd	0.147

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	32.2
p_staggered_tor	14.4
p_scangle_it	8.323
p_scbond_it	6.817
p_mcangle_it	5.461
p_mcbond_it	4.601
p_planar_tor	3.9
p_chiral_restr	0.245
p_singtor_nbd	0.164
p_multtor_nbd	0.147
p_xyhbond_nbd	0.137
p_planar_d	0.038
p_angle_d	0.031
p_bond_d	0.02
p_plane_restr	0.02
p_hb_or_metal_coord
p_xhyhbond_nbd
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3193
Nucleic Acid Atoms
Solvent Atoms	367
Heterogen Atoms	162

Software

Software
Software Name	Purpose
X-GEN	data reduction
FRODO	model building
PROFFT	refinement
X-GEN	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.