2W9G

Wild-type Staphylococcus aureus DHFR in complex with NADPH and trimethoprim

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.4		BUFFER: 30 MM CITRIC ACID / 40 MM BIS-TRIS PROPANE PH6.4, 13.3% PEG3350, 16.7% PEG6000

Crystal Properties
Matthews coefficient	Solvent content
2.38	47.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.287	α = 90
b = 79.287	β = 90
c = 106.254	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	273	CCD	MARRESEARCH	SI	2007-06-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-BM		APS	17-BM

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	1.95	50	99.9	0.06	33	5.7		54341

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	1.95	2.02	99.9		0.36	5.2	5.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.95	68.68	14048	745	98.5	0.214	0.211	0.287	RANDOM	25.19

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]
-0.45	-0.22		-0.45		0.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.77
r_dihedral_angle_4_deg	19.422
r_dihedral_angle_3_deg	17.519
r_dihedral_angle_1_deg	14.141
r_scangle_it	6.619
r_scbond_it	4.823
r_mcangle_it	3.323
r_mcbond_it	2.472
r_angle_refined_deg	1.984
r_symmetry_vdw_refined	0.365
r_nbtor_refined	0.327
r_nbd_refined	0.225
r_xyhbond_nbd_refined	0.205
r_symmetry_hbond_refined	0.197
r_chiral_restr	0.147
r_bond_refined_d	0.02
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1273
Nucleic Acid Atoms
Solvent Atoms	86
Heterogen Atoms	69

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing