3SH2

Staphylococcus aureus Dihydrofolate Reductase complexed with NADPH and 6-ethyl-5-(3-(4-methoxybiphenyl-3-yl)prop-1-ynyl)pyrimidine-2,4-diamine (UCP120J)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		Sa DHFR bound to folate and NADPH (Dale et al. 1997)

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
2.86	56.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.163	α = 90
b = 86.163	β = 90
c = 103.24	γ = 120

Symmetry
Space Group	P 61

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		2010-05-03	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.1000	NSLS	X25

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	2.999	37.32	99.91	0.173	0.173	20.2	5.6	8349	7931	3	3	57.84

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	2.999	3.1	100		0.49	0.49	3.2	5.4	418

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	Sa DHFR bound to folate and NADPH (Dale et al. 1997)	2.999	37.32	8349	7931	418	99.91	0.2181	0.2181	0.2165	0.2496	RANDOM	57.8438

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]
-0.04	-0.02		-0.04		0.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.592
r_dihedral_angle_3_deg	16.669
r_dihedral_angle_4_deg	14.414
r_dihedral_angle_1_deg	4.88
r_angle_refined_deg	0.983
r_scangle_it	0.463
r_mcangle_it	0.405
r_nbtor_refined	0.301
r_scbond_it	0.252
r_mcbond_it	0.223

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.592
r_dihedral_angle_3_deg	16.669
r_dihedral_angle_4_deg	14.414
r_dihedral_angle_1_deg	4.88
r_angle_refined_deg	0.983
r_scangle_it	0.463
r_mcangle_it	0.405
r_nbtor_refined	0.301
r_scbond_it	0.252
r_mcbond_it	0.223
r_nbd_refined	0.155
r_symmetry_vdw_refined	0.142
r_xyhbond_nbd_refined	0.104
r_chiral_restr	0.065
r_bond_refined_d	0.006
r_symmetry_hbond_refined	0.006
r_gen_planes_refined	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2544
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	150

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
Coot	model building

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.