5ELR

Structure of the KH-QUA2 domain of T-STAR in complex with AAUAAU RNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	277	Imidazole, PEG 8000

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.38	α = 90
b = 45.56	β = 90
c = 151.98	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M-F		2014-02-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04	0.97949	Diamond	I04

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	2.3	45.56	100	0.081	0.024	0.998	21.2	12.6		13783

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.36	100		0.921	0.267	0.869	3.2	12.8	995

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	2.3	43.68	13046	687	99.96	0.2294	0.2273	0.2694	RANDOM	56.893

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]
2.96			2.68		-5.65

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.715
r_dihedral_angle_4_deg	18.328
r_dihedral_angle_3_deg	14.908
r_dihedral_angle_1_deg	6.984
r_mcangle_it	4.622
r_mcbond_other	3.443
r_mcbond_it	3.441
r_angle_refined_deg	1.816
r_angle_other_deg	1.454
r_chiral_restr	0.102
r_bond_refined_d	0.015
r_gen_planes_refined	0.011
r_bond_other_d	0.006
r_gen_planes_other	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1800
Nucleic Acid Atoms	106
Solvent Atoms	21
Heterogen Atoms

Software

Software
Software Name	Purpose
Aimless	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
PHASER	phasing
xia2	data reduction