4OI0

bound to ssRNA dinucleotide GC, ADP, AlF4-, and Mg2+(transition state, data set I)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	293	100 mM Na2HPO4/KH2PO4 200 mM NaCl 15 mM MgCl2 90 mM sarcosine 25% (w/v) PEG 1000, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 100.71	α = 90
b = 100.71	β = 90
c = 40.4	γ = 120

Symmetry
Space Group	P 31

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		IMAGE PLATE	MAR scanner 345 mm plate	Rigaku VariMax	2010-08-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.2	50	96.9		3		22553		-3	36.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.3	83.7			3

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	FOURIER SYNTHESIS	THROUGHOUT	2.2	36.66	21145	1108	100	0.22938	0.22677	0.2797	RANDOM	26.449

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]
-0.14	-0.07		-0.14		0.22

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.607
r_dihedral_angle_4_deg	16.614
r_dihedral_angle_3_deg	13.431
r_dihedral_angle_1_deg	5.718
r_scangle_it	1.989
r_scbond_it	1.203
r_angle_refined_deg	1.155
r_angle_other_deg	0.792
r_mcangle_it	0.779
r_mcbond_it	0.412
r_mcbond_other	0.083
r_chiral_restr	0.068
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3096
Nucleic Acid Atoms	40
Solvent Atoms	135
Heterogen Atoms	58

Software

Software
Software Name	Purpose
MAR345dtb	data collection
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling