1R3O

Crystal structure of the first RNA duplex in L-conformation at 1.9A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		pH 7.0, temperature 100K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.109	α = 90
b = 46.109	β = 90
c = 263.501	γ = 120

Symmetry
Space Group	H 3 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	CCD	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11		EMBL/DESY, HAMBURG	X11

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	1.9	20.54		0.065				8385

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.9	20.54	7996	388	100	0.24082	0.23855	0.28563	RANDOM	32.841

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]
0.78	0.39		0.78		-1.18

RMS Deviations
Key	Refinement Restraint Deviation
r_chiral_restr	5.108
r_scangle_it	2.33
r_angle_refined_deg	1.766
r_scbond_it	1.746
r_angle_other_deg	1.343
r_symmetry_hbond_refined	0.22
r_nbd_other	0.211
r_xyhbond_nbd_refined	0.173
r_symmetry_vdw_other	0.12
r_nbd_refined	0.098
r_nbtor_other	0.055
r_symmetry_vdw_refined	0.053
r_bond_refined_d	0.012
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_dihedral_angle_1_deg
r_dihedral_angle_2_deg
r_gen_planes_other
r_xyhbond_nbd_other
r_symmetry_hbond_other
r_mcbond_it
r_mcangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	676
Solvent Atoms	129
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling