ISDA

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	7.0	291	RNA was dissolved in 1 mM Na2 EDTA (pH 8.0) and 10 mM Tris-HCl (pH 8.0) to attain 350 uM final RNA concentration. The RNA sample was annealed by heating at 65 C for 2 min and slowly cooling to room temperature. Crystallization set-ups were made by mixing 4 uL of RNA solution with 2 uL of a crystallization buffer composed of 3.0 M ammonium sulfate, 10 mM magnesium chloride, 10 mM manganese chloride, and 50 mM potassium 3-(N-morpholino) propanesulfonic acid (MOPS), pH 7.0 at 18 C. Crystals appear in about two weeks time.

Unit Cell:

a: 29.340 Å b: 29.340 Å c: 75.661 Å α: 90.00° β: 90.00° γ: 90.00°

Symmetry:

Space Group: P 43

Crystal Properties:

Matthew's Coefficient: 1.81 Solvent Content: 32.06

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.20	27.36	36363	3874	92.1	0.184	0.214	10.76

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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
1.200	27.360	94.1	0.08900	?	23.4700	17.00	?	?	?	?	4.79

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.20	1.24	?		?	?	?

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		100 K			?

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
LIQUID ANODE	Excillum MetalJet D2+ 70 kV	1.3418	?	?

Software