Experiment: 4P5J

Crystal structure of the tRNA-like structure from Turnip Yellow Mosaic Virus (TYMV), a tRNA mimicking RNA

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277.15	This RNA was prepared for crystallography in a solution containing 5 mg/mL RNA, 2.5 mM MgCl2, and 10 mM HEPES-KOH pH 7.5. This mixture was heated to 65?C for 3 minutes, then cooled at room temperature. After cooling, Spermidine was added to 0.5 mM. The reaction was centrifuged for 10 minutes at 13000 x g and then used in sitting-drop vapor diffusion crystallization at 4?C. 1 ?L of RNA solution was combined with 2 ?L of 10% MPD, 40 mM Na-Cacodylate pH 6.0, 12 mM Spermine, 80 mM NaCl, and 20 mM MgCl2. The well solution was 20-35% MPD. Crystals appeared and grew to full size over the course of 1-2 days.

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.27	α = 90
b = 101.57	β = 90
c = 111.61	γ = 90

Symmetry
Space Group	I 2 2 2

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	RDI CMOS_8M		2013-10-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0972	ALS	4.2.2

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	1.99	66	99.4	0.054	21.71	7.45		41343		2

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	1.99	2.03	94.7		0.82	2.19

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	1.9912	28.871	1.34	41334	3790	99.46	0.2088	0.2057	0.2084	0.2396	0.2413	Random

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	14.148
f_angle_d	1.791
f_chiral_restr	0.082
f_plane_restr	0.013
f_bond_d	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	1785
Solvent Atoms	126
Heterogen Atoms	100

Software

Software
Software Name	Purpose
PHENIX	refinement