7O2I

METTL3-METTL14 heterodimer bound to the SAM competitive small molecule inhibitor STM2457

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	295	150 mM magnesium acetate, 22% w/v PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.24	45.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.094	α = 90
b = 64.094	β = 90
c = 225.302	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 EIGER X 16M		2019-01-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04	0.9795	Diamond	I04

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	3	49.795	100	0.274	0.996	12.2	19.7		11480

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3	3.18	100		1.8	0.697	2.7	15

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	5L6D	3	49.795	11432	508	99.956	0.189	0.1859	0.2626	60.364

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]
-1.463	-0.731		-1.463		4.745

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.741
r_dihedral_angle_3_deg	19.605
r_dihedral_angle_4_deg	17.413
r_dihedral_angle_1_deg	8.673
r_lrange_it	8.17
r_lrange_other	8.169
r_mcangle_it	5.202
r_mcangle_other	5.202
r_scangle_it	4.99
r_scangle_other	4.99
r_mcbond_it	3.117
r_mcbond_other	3.104
r_scbond_it	3.037
r_scbond_other	3.037
r_angle_refined_deg	1.287
r_angle_other_deg	1.135
r_nbd_refined	0.235
r_symmetry_nbd_other	0.225
r_nbd_other	0.216
r_xyhbond_nbd_refined	0.181
r_nbtor_refined	0.178
r_symmetry_nbd_refined	0.115
r_symmetry_xyhbond_nbd_refined	0.113
r_symmetry_nbtor_other	0.083
r_symmetry_xyhbond_nbd_other	0.058
r_chiral_restr	0.055
r_bond_refined_d	0.011
r_gen_planes_refined	0.01
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3580
Nucleic Acid Atoms
Solvent Atoms	23
Heterogen Atoms	37

Software

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