6MTG

A Single Reactive Noncanonical Amino Acid is Able to Dramatically Stabilize Protein Structure

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.4	277	100mM Potassium Formate and 26% PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.948	α = 90
b = 100.036	β = 90
c = 125.218	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	Flat Si Rh coated M0, Kirkpatrick-Baez flat bent Si M1 & M2	2018-04-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL12-2	0.9795	SSRL	BL12-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.85	78.157	99.3	0.156	0.162	0.044	0.998	11.5	13.4		56066

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.85	1.95	99.3		1.523	1.523	1.581	0.419	0.721	1.8	13.9

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	2H2W	1.85	29.89	53171	2829	99.07	0.1718	0.1693	0.2183	RANDOM	28.1

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]
1.87			-0.23		-1.64

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.086
r_dihedral_angle_4_deg	19.61
r_dihedral_angle_3_deg	12.674
r_dihedral_angle_1_deg	7.352
r_angle_refined_deg	2.006
r_angle_other_deg	1.504
r_chiral_restr	0.168
r_bond_refined_d	0.017
r_gen_planes_refined	0.013
r_gen_planes_other	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.086
r_dihedral_angle_4_deg	19.61
r_dihedral_angle_3_deg	12.674
r_dihedral_angle_1_deg	7.352
r_angle_refined_deg	2.006
r_angle_other_deg	1.504
r_chiral_restr	0.168
r_bond_refined_d	0.017
r_gen_planes_refined	0.013
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4721
Nucleic Acid Atoms
Solvent Atoms	545
Heterogen Atoms	35

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.