3FS6

Correlations of Inhibitor Kinetics for Pneumocystis jirovecii and Human Dihydrofolate Reductase with Structural Data for Human Active Site Mutant Enzyme Complexes

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1U72

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.9	287	100 mM K2PO4, pH 6.9, 60% sat. AS with 3% ethanol, VAPOR DIFFUSION, HANGING DROP, temperature 287K

Crystal Properties
Matthews coefficient	Solvent content
2.49	50.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.098	α = 90
b = 84.098	β = 90
c = 78.054	γ = 120

Symmetry
Space Group	H 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200	IMAGE PLATE	MAR scanner 300 mm plate	mirrors	2008-12-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	1.000	SSRL	BL9-2

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	1.23	53.2	100	0.07	0.02	20.8	11.1	59797	56766	2	2	30

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	1.23	1.33	100		0.4	0.324	2.5	10.7	939

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	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	1u72	1.23	34.4	2	2	59797	56758	3022	99.98	0.24572	0.24494	0.26019	RANDOM	16.036

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
r_dihedral_angle_2_deg	33.437
r_dihedral_angle_3_deg	14.932
r_dihedral_angle_4_deg	10.923
r_dihedral_angle_1_deg	5.759
r_scangle_it	2.724
r_scbond_it	1.954
r_angle_refined_deg	1.577
r_mcangle_it	1.307
r_mcbond_it	0.861
r_nbtor_refined	0.309

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.437
r_dihedral_angle_3_deg	14.932
r_dihedral_angle_4_deg	10.923
r_dihedral_angle_1_deg	5.759
r_scangle_it	2.724
r_scbond_it	1.954
r_angle_refined_deg	1.577
r_mcangle_it	1.307
r_mcbond_it	0.861
r_nbtor_refined	0.309
r_nbd_refined	0.198
r_symmetry_vdw_refined	0.176
r_chiral_restr	0.126
r_xyhbond_nbd_refined	0.126
r_symmetry_hbond_refined	0.086
r_bond_refined_d	0.009
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1502
Nucleic Acid Atoms
Solvent Atoms	67
Heterogen Atoms	73

Software

Software
Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	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.