Experiment: 7MX7

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		286.15	Crystallization of full-length human PRMT5/MEP50 complexed with cofactor site inhibitors was performed at 13 degrees Celsius by hanging-drop vapor-diffusion methods. 2.5 ul of a solution of 5:1 molar ratio of inhibitor compound to PRMT5/MEP50 complex (13 mg/mL) was mixed with 2.5 ul of reservoir solution containing 13-15% (w/v) PEG3350, 0.1M MES, pH 6.5-7.5, 0.25M NaCl, and 20% (v/v) ethylene glycol. Microseeding from initial crystals produced crystals suitable for data collection. Crystals for data collection were flash-frozen in liquid N2 using 25% (v/v) ethylene glycol in the mother liquor as a cryoprotectant

Crystal Properties
Matthews coefficient	Solvent content
2.77	55.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 101.597	α = 90
b = 137.477	β = 90
c = 178.263	γ = 90

Symmetry
Space Group	I 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	PIXEL	DECTRIS PILATUS 6M		2016-12-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.0	APS	17-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	2.49	89.13	99.9	0.064	0.069	0.027	19.3	6.7		44025

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.49	2.62			0.682	0.737	0.278	2.2	6.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	4GQB	2.49	89.13	44019	2198	99.9	0.2248	0.2219	0.2792	RANDOM	70.8

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]
-49.1383			14.8004		34.3379

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	20.78
t_omega_torsion	3.3
t_angle_deg	1.07
t_bond_d	0.009
t_dihedral_angle_d
t_gen_planes
t_it
t_chiral_improper_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7341
Nucleic Acid Atoms
Solvent Atoms	249
Heterogen Atoms	32

Software

Software
Software Name	Purpose
BUSTER	refinement
XDS	data reduction
Aimless	data scaling
BUSTER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.