3SRS

S. aureus Dihydrofolate Reductase complexed with novel 7-aryl-2,4-diaminoquinazolines

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	298	PEG 8000, Mg acetate, MPD, ADA buffer, pH 6.2, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.302	α = 90
b = 79.302	β = 90
c = 107.373	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	100	IMAGE PLATE	MAR scanner 345 mm plate				SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.54

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	68.68	98.7	0.049	0.049	28.7	8.9	22471	22471

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	1.69	1.79	93.4		0.286	0.286	2.6	8.1	3023

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	1.7	21.15	22451	1148	99.46	0.1901	0.1884	0.2224	RANDOM	20.302

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]
-0.07	-0.03		-0.07		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.29
r_dihedral_angle_3_deg	12.271
r_dihedral_angle_4_deg	9.163
r_dihedral_angle_1_deg	6.249
r_scangle_it	2.759
r_scbond_it	2.029
r_angle_refined_deg	1.409
r_mcangle_it	1.044
r_mcbond_it	0.652
r_nbtor_refined	0.309
r_symmetry_vdw_refined	0.272
r_nbd_refined	0.192
r_symmetry_hbond_refined	0.191
r_xyhbond_nbd_refined	0.101
r_chiral_restr	0.09
r_bond_refined_d	0.011
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1272
Nucleic Acid Atoms
Solvent Atoms	109
Heterogen Atoms	71

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction