3FQO

Staphylococcus aureus F98Y mutant dihydrofolate reductase complexed with NADPH and 2,4-diamino-5-[3-(2,5-dimethoxyphenyl)prop-1-ynyl]-6-ethylpyrimidine (UCP120B)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		Sa F98Y DHFR bound to Folate and NADPH (Dale et al., J.Mol.Biol. 1997, structure not deposited in the PDB)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	15% PEG 10000, 150mM Sodium acetate, 100mM MES pH 6.5, 5% Butyrlactone, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.68	54.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.866	α = 90
b = 78.866	β = 90
c = 107.825	γ = 120

Symmetry
Space Group	P 61 2 2

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		2008-04-19	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	2.09	42.33	99.1	0.064	0.064	5	9.4		11685		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	2.09	2.18	100		0.406	0.406	3.8	9.5	838

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	DIFFERENCE FOURIER	THROUGHOUT	Sa F98Y DHFR bound to Folate and NADPH (Dale et al., J.Mol.Biol. 1997, structure not deposited in the PDB)	2.09	42.33	11685	11685	608	99.1	0.218	0.218	0.216	0.261	RANDOM	30.258

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]
-0.02	-0.01		-0.02		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.263
r_dihedral_angle_4_deg	18.202
r_dihedral_angle_3_deg	14.626
r_dihedral_angle_1_deg	6.099
r_scangle_it	1.91
r_angle_refined_deg	1.395
r_scbond_it	1.189
r_mcangle_it	1.037
r_mcbond_it	0.583
r_nbtor_refined	0.304
r_symmetry_vdw_refined	0.197
r_symmetry_hbond_refined	0.19
r_nbd_refined	0.184
r_xyhbond_nbd_refined	0.123
r_chiral_restr	0.086
r_bond_refined_d	0.008
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1274
Nucleic Acid Atoms
Solvent Atoms	65
Heterogen Atoms	71

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
Coot	model building
CCP4	phasing