8XTF

Crystal structure of methyltransferase MpaG' in complex with SAH and FDHMP-3C

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold		MpaG' structure

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		289	10%PEG 8000, 0.1 M CHES, pH 9.5 and 0.2 M sodium chloride

Crystal Properties
Matthews coefficient	Solvent content
3.33	63.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 211.754	α = 90
b = 211.754	β = 90
c = 67.424	γ = 120

Symmetry
Space Group	H 3 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 EIGER2 S 9M		2023-07-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL02U1	0.979183	SSRF	BL02U1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim 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	2.13	63.36	100	0.074	0.105	0.074	0.994	6.2	2		32213			23.33

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.13	2.19		99.9	0.433	0.612	0.433	0.614		2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FREE R-VALUE	AlphaFold	2.13	37.91	1.34	32185	1558	99.9	0.1711	0.1691	0.2101	RANDOM	24.71

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	5.9573
f_angle_d	0.8322
f_chiral_restr	0.0501
f_bond_d	0.0073
f_plane_restr	0.0063

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3053
Nucleic Acid Atoms
Solvent Atoms	184
Heterogen Atoms	53

Software

Software
Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
autoPROC	data reduction
PHASER	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.