6HCU

Crystal Structure of Lysyl-tRNA Synthetase from Plasmodium falciparum bound to a difluoro cyclohexyl chromone ligand

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	0.1 M Bis-Tris pH 6.5, 2 % (v/v) Tascimate pH 6.0, 20 % (w/v) PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.137	α = 90
b = 95.344	β = 90
c = 166.517	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	PIXEL	DECTRIS PILATUS 6M		2017-09-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	1.074	ESRF	ID29

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	1.62	83	99.9	0.062	10	4.3		148069

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.62	1.66	100		0.872	0.59	1.7	4.4

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	4H02	1.62	82.74	139948	7280	99.26	0.1848	0.1827	0.226	RANDOM	25.892

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]
0.35			0.53		-0.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.035
r_dihedral_angle_4_deg	16.996
r_dihedral_angle_3_deg	14.301
r_dihedral_angle_1_deg	7.168
r_angle_refined_deg	2.245
r_angle_other_deg	1.181
r_chiral_restr	0.152
r_bond_refined_d	0.023
r_gen_planes_refined	0.013
r_bond_other_d	0.003

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.035
r_dihedral_angle_4_deg	16.996
r_dihedral_angle_3_deg	14.301
r_dihedral_angle_1_deg	7.168
r_angle_refined_deg	2.245
r_angle_other_deg	1.181
r_chiral_restr	0.152
r_bond_refined_d	0.023
r_gen_planes_refined	0.013
r_bond_other_d	0.003
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7860
Nucleic Acid Atoms
Solvent Atoms	966
Heterogen Atoms	107

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
autoPROC	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.