ISDA: 4PQV

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	7.5	293	drop: 1 uL 5 mg/mL RNA in 2.5 mM magnesium chloride, 10 mM HEPES-KOH pH 7.5 (heated to 65 C for 3 minutes, cooled at room temperature, 0.5 mM spermidine added, centrifuged for 10 minutes at 13000 x g) + 2 uL 10% MPD, 40 mM sodium cacodylate, pH 6.0, 12 mM spermine, 80 mM sodium chloride, 20 mM magnesium chloride (Nucleic Acid Mini-Screen kit, Hampton Research), well: 20-35% MPD, crystals appeared within 2-3 days and grew to full size over 1-2 weeks. To obtain derivatized crystals for phasing, 5 uL 4 mM iridium (III) hexammine in RNase-free water was added directly to crystallization drops and well solutions <35% MPD were replaced with 35% MPD. Wells were then re-sealed and allowed to re-equilibrate for at least 2 days, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Unit Cell:

a: 76.698 Å b: 76.698 Å c: 76.448 Å α: 90.00° β: 90.00° γ: 120.00°

Symmetry:

Space Group: P 32 2 1

Crystal Properties:

Matthew's Coefficient: 2.94 Solvent Content: 58.13

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	SAD	?	2.463	50.140	8418	824	85.47	0.2357	0.2835	?

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
2.45	50.14	?	?	?	?	?	?	9499	?	?	?

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	2.45	?	?	?	?	?	?	?

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
SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0972	ALS	4.2.2

Software