6SR7

Structure of the U1A variant A1-98 Y31H/Q36R/K98W

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	293	2.2 M ammonium sulfate, 0.2 M tri-potassium citrate

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.258	α = 90
b = 76.258	β = 90
c = 151.481	γ = 90

Symmetry
Space Group	P 43 21 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	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	1.86	68.11	100	0.142	0.145	0.999	14.8	24.1		38415

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	1.86	1.89	99.6		0.923	0.956	0.54	2.4

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	1.86	68.11	38337	1920	99.945	0.223	0.2214	0.256	28.351

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]
-0.551			-0.551		1.103

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.831
r_dihedral_angle_4_deg	17.075
r_dihedral_angle_3_deg	14.535
r_dihedral_angle_1_deg	6.508
r_lrange_other	6.48
r_lrange_it	6.478
r_scangle_other	5.038
r_scangle_it	5.034
r_mcangle_it	3.513
r_mcangle_other	3.513
r_scbond_it	3.183
r_scbond_other	3.181
r_mcbond_it	2.408
r_mcbond_other	2.405
r_angle_refined_deg	1.561
r_angle_other_deg	1.365
r_nbd_other	0.234
r_nbd_refined	0.201
r_symmetry_nbd_other	0.183
r_nbtor_refined	0.165
r_symmetry_xyhbond_nbd_refined	0.16
r_symmetry_nbd_refined	0.155
r_symmetry_nbtor_other	0.126
r_xyhbond_nbd_refined	0.1
r_chiral_restr	0.081
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2902
Nucleic Acid Atoms
Solvent Atoms	81
Heterogen Atoms	5

Software

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