7CTZ

Wild-type plasmodium falciparum dihydrofolate reductase-thymidylate synthase (PfDHFR-TS) complexed with fragment 148, NADPH, and dUMP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	4.6	297	0.1M NaOAc, 0.17 M Ammonium acetate, 18% PEG 4000

Crystal Properties
Matthews coefficient	Solvent content
2.53	56.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.638	α = 90
b = 155.639	β = 90
c = 164.614	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CMOS	BRUKER PHOTON 100		2019-09-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	BRUKER D8 QUEST	1.5418

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	2.65	24.83	97.9	0.1612	10.3	5.85		42316

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	2.65	2.7	99.9		0.5087		4.65

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	NONE	4DPD	2.65	24.826	42316	2095	97.82	0.258	0.255	0.3245	31.691

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]
-0.229			-3.457		3.686

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.6
r_dihedral_angle_4_deg	20.533
r_dihedral_angle_3_deg	19.155
r_dihedral_angle_1_deg	9.037
r_lrange_it	7.347
r_lrange_other	7.347
r_mcangle_it	5.062
r_mcangle_other	5.062
r_scangle_it	4.728
r_scangle_other	4.728
r_mcbond_it	3.107
r_mcbond_other	3.107
r_scbond_it	2.881
r_scbond_other	2.881
r_angle_other_deg	2.342
r_angle_refined_deg	1.843
r_symmetry_nbd_refined	0.277
r_nbd_other	0.27
r_symmetry_nbd_other	0.223
r_nbd_refined	0.219
r_xyhbond_nbd_refined	0.19
r_nbtor_refined	0.18
r_symmetry_xyhbond_nbd_other	0.141
r_symmetry_xyhbond_nbd_refined	0.138
r_chiral_restr	0.077
r_symmetry_nbtor_other	0.076
r_bond_other_d	0.035
r_bond_refined_d	0.011
r_gen_planes_other	0.011
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8867
Nucleic Acid Atoms
Solvent Atoms	58
Heterogen Atoms	158

Software

Software
Software Name	Purpose
REFMAC	refinement
PROTEUM PLUS	data reduction
Coot	model building