6SQT

Structure of the U1A variant A1-98 Y31H/Q36R/F56W triple mutant

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	2.2 M ammonium sulfate, 0.2 M tri-potassium citrate

Crystal Properties
Matthews coefficient	Solvent content
2.95	58.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.81	α = 90
b = 89.81	β = 90
c = 86.56	γ = 120

Symmetry
Space Group	P 32 2 1

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		2017-12-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, DESY BEAMLINE P11	1.03320	PETRA III, DESY	P11

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	1.84	38.89	82.1	0.054	0.056	1	25.4	13.9		29093

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.84	1.87	13.4		0.871	1.189	0.276	0.7

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.84	38.89	29067	1474	82.004	0.215	0.2134	0.2446	41.399

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]
-1.628	-0.814		-1.628		5.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.482
r_dihedral_angle_4_deg	17.432
r_dihedral_angle_3_deg	14.781
r_lrange_other	8.713
r_lrange_it	8.704
r_dihedral_angle_1_deg	7.109
r_scangle_it	6.832
r_scangle_other	6.83
r_mcangle_other	4.806
r_mcangle_it	4.805
r_scbond_it	4.375
r_scbond_other	4.373
r_mcbond_it	3.443
r_mcbond_other	3.433
r_angle_refined_deg	1.619
r_angle_other_deg	1.331
r_nbd_other	0.234
r_symmetry_nbd_refined	0.222
r_nbd_refined	0.192
r_symmetry_nbd_other	0.191
r_nbtor_refined	0.162
r_xyhbond_nbd_refined	0.157
r_symmetry_xyhbond_nbd_refined	0.118
r_symmetry_nbtor_other	0.097
r_chiral_restr	0.078
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2198
Nucleic Acid Atoms
Solvent Atoms	73
Heterogen Atoms

Software

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