6UFM

Cocrystal Structure of the Nocardia farcinica ileS T-box riboswitch in complex with its cognate tRNA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4LCK	tRNA-Gly

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	294	20-25 % PEG 3350, 0.1 M Bis-Tris, pH 6.5, 0.2 M Li2SO4, 10 mM MgCl2, 1 mM Spermine

Crystal Properties
Matthews coefficient	Solvent content
3.15	60.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.23	α = 90
b = 93.98	β = 90
c = 179.63	γ = 90

Symmetry
Space Group	P 2 2 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 EIGER X 16M		2018-11-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0 A	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.82	46.99	99.3	0.08	0.994	15.2	13		17899			92.58

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	2.82	2.92	99.4		1.96	0.712	1.2	10.3

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	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	tRNA-Gly	2.82	46.99	1.34	33032	3311	99.22	0.195	0.1907	0.2327	142.52

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
f_dihedral_angle_d	16.5379
f_angle_d	0.7416
f_chiral_restr	0.0374
f_plane_restr	0.005
f_bond_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	3754
Solvent Atoms
Heterogen Atoms	5

Software

Software
Software Name	Purpose
SERGUI	data collection
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
AutoSol	phasing
Coot	model building
PHENIX	refinement

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.