6NS0

Crystal Structure of Lysyl-tRNA Synthetase from Chlamydia trachomatis complexed with L-lysine and Cladosporin

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3A74

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	287	ChtrA.00612.a.B1.PW38393 at 25.76 mg/ml was incubated with 3 mM l-lysine, 3 mM cladosporin, then was mixed 1:1 MorpheusB6opt1(e11): 10.96% (w/v) PEG 8000, 21.92% (v/v) ethylene glycol, 0.03 M each sodium fluoride, sodium bromide, sodium iodide, 0.1 M MOPE/HEPES-Na, pH=7.5. Tray: 300519e11, puck: ytb8-10. Crystallization of protein from strain UCH-1/proctitis and strain D/UW-3/Cx gave the same data.

Crystal Properties
Matthews coefficient	Solvent content
3.14	60.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.58	α = 90
b = 57.51	β = 97
c = 139.55	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	RAYONIX MX-300	Beryllium Lenses	2018-05-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	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	2.2	49.316	99.8	0.064	0.074	0.998	13.15	3.79		77679			46.243

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.26	99.8		0.577	0.672	0.797	2.35	3.81

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FREE R-VALUE	3A74	2.2	49.316	1.34	77666	1999	99.81	0.1652	0.1641	0.2073	RANDOM	53.1738

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8027
Nucleic Acid Atoms
Solvent Atoms	466
Heterogen Atoms	234

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction

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.