ISDA

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	7.0	296	0.3 mM RNA, 0.33 mM selenomethionine labeled U1A-RBD double mutant, 0.5 mM chlorotetracycline, 50 mM Tris pH 7.5, 5 mM MgCl2, 0.25 mM spermine; 1uL macromolecular complex:1 uL reservoir; 50 mM HEPES-KOH pH 7.0, 20 mM MGCl2, 12.5-15% PEG 8000; cryo 30% glycerol, 50 mM HEPES-KOH pH 7.0, 20 mM MGCl2, 15% PEG 8000, 0.5 mM spermine, 0.5 mM chlorotetracycline, VAPOR DIFFUSION, SITTING DROP, temperature 296K

Unit Cell:

a: 120.835 Å b: 120.835 Å c: 55.279 Å α: 90.00° β: 90.00° γ: 90.00°

Symmetry:

Space Group: P 4 21 2

Crystal Properties:

Matthew's Coefficient: 3.21 Solvent Content: 61.72

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	MAD	THROUGHOUT	2.200	29.31	21171	2156	98.800	0.217	0.260	50.610

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
2.2	29.31	99.1	0.008	?	37.6	9.5	?	21415	?	?	?

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	2.20	2.28	99.9	?	?	3.8	9.8	2156

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 5.0.2	0.9570,0.9797,0.9795	ALS	5.0.2

Software