Experiment: 5TF6

Structure and conformational plasticity of the U6 small nuclear ribonucleoprotein core

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	1 M lithium chloride, 100 mM sodium MES, 64 mM hydrochloric acid, 25% PEG 8,000, 20% glycerol, 1 mM MnCl2, 400 mM potassium chloride, 10 mM HEPES acid, 10 mM Tris base, 2 mM MgCl2, 1 mM TCEP-HCl

Crystal Properties
Matthews coefficient	Solvent content
3.17	61.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.921	α = 90
b = 84.446	β = 90
c = 255.142	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		2013-10-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.9795	APS	24-ID-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	49.1	99.71	0.09	0.998	17.67	12.1		141843			50.38

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MAD	FREE R-VALUE	2.3	49.1	1.34	141843	3782	99.43	0.1863	0.185	0.1895	0.2316	0.2343	69.6255

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.234
f_angle_d	1.771
f_chiral_restr	0.109
f_bond_d	0.015
f_plane_restr	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5922
Nucleic Acid Atoms	2630
Solvent Atoms	750
Heterogen Atoms	39

Software

Software
Software Name	Purpose
Aimless	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing