Experiment: 3P4A

2'Fluoro modified RNA octamer fA2U2

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	291	40mM Sodium cacodylate pH 6.0, 80 mM strontium chloride, 20 mM magnesium chloride, 12mM spermine tetrahydrochloride, 10% 2-methyl-2,4-pentanediol, equilibrated against a reservoir of 35% MPD, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.245	α = 90
b = 43.245	β = 90
c = 60.791	γ = 120

Symmetry
Space Group	P 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARMOSAIC 300 mm CCD		2008-11-17	M	SAD
2	1	x-ray		CCD	MARMOSAIC 300 mm CCD			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D	0.7689	APS	21-ID-D
2	SYNCHROTRON	APS BEAMLINE 21-ID-D	0.9787	APS	21-ID-D

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
1,2	1.2	30	99.7	0.05	38.8	4.5	40060	39940

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)
1,2	1.2	1.24	99.3		0.28	3.4	3.7	4027

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	Troughout	1.2	30	39940	39888	1997	99.9	0.17	0.17	0.1648	0.234	0.2209	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
s_angle_d	0.026
s_bond_d	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	1002
Solvent Atoms	296
Heterogen Atoms	11

Software

Software
Software Name	Purpose
MAR345dtb	data collection
HKL2Map	model building
SHELXL-97	refinement
HKL-2000	data reduction
HKL-2000	data scaling
HKL2Map	phasing