6KP7

Quadruple mutant (N51I+C59R+S108N+I164L) plasmodium falciparum dihydrofolate reductase-thymidylate synthase (PfDHFR-TS) complexed with B12154

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4DP3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH		297	NaOAc, NH2OAc, PEG 4000

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.885	α = 90
b = 156.288	β = 90
c = 165.288	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	123	CCD	ADSC QUANTUM 315		2016-10-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSRRC BEAMLINE BL13B1	1	NSRRC	BL13B1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	1.97	50	98.8	0.055	0.06	0.024	14.3	5.9		105672

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.97	2.04	91		0.435	0.48	0.201	0.916		5.3

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	4DP3	1.97	26.11	102018	5111	95.445	0.196	0.1943	0.2326	33.555

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]
0.019			0.065		-0.084

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.58
r_dihedral_angle_4_deg	16.439
r_dihedral_angle_3_deg	16.004
r_dihedral_angle_1_deg	8.24
r_lrange_other	7.886
r_lrange_it	7.884
r_scangle_it	5.69
r_scangle_other	5.689
r_mcangle_it	4.927
r_mcangle_other	4.926
r_scbond_it	3.692
r_scbond_other	3.692
r_mcbond_it	3.355
r_mcbond_other	3.355
r_chiral_restr_other	1.948
r_angle_refined_deg	1.772
r_angle_other_deg	1.389
r_symmetry_nbd_refined	0.245
r_nbd_other	0.219
r_nbd_refined	0.21
r_symmetry_nbd_other	0.181
r_nbtor_refined	0.178
r_symmetry_xyhbond_nbd_refined	0.175
r_xyhbond_nbd_refined	0.159
r_chiral_restr	0.134
r_symmetry_nbtor_other	0.08
r_symmetry_xyhbond_nbd_other	0.064
r_bond_refined_d	0.012
r_gen_planes_refined	0.01
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8767
Nucleic Acid Atoms
Solvent Atoms	422
Heterogen Atoms	202

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data scaling
DENZO	data reduction
PHASER	phasing