5H02

Crystal structure of Methanohalophilus portucalensis glycine sarcosine N-methyltransferase tetramutant (H21G, E23T, E24N, L28S)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.3	277.15	Protein solution: GSMT (6.6 mg/ml) in 100 mM TES pH 7.3, 2 M KCl, 1 mM EDTA, 1 mM 2-Mercaptoethanol, 0.1 mM SAH and 50 mM glycine. Crystallization reagent: 0.2 M Ammonium phosphate monobasic. 0.23 M ammonia phosphate monobasic, 0.1 mM SAH and 3.35 M betaine were used as cryoprotectant before data collection

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.11

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.874	α = 90
b = 120.803	β = 90
c = 131.301	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	100	CCD	RAYONIX MX300HE		2014-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSRRC BEAMLINE BL15A1	1.00000	NSRRC	BL15A1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	1.776	20	100	31.518	4.9		40112

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.78	1.82

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	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	5HIL	1.776	19.888	1.35	40110	1995	99.66	0.1775	0.1765	0.1958

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	16.015
f_angle_d	0.796
f_chiral_restr	0.053
f_bond_d	0.006
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2007
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms	42

Software

Software
Software Name	Purpose
PHENIX	refinement
Blu-Ice	data collection
HKL-2000	data scaling
HKL-2000	data processing
PHENIX	model building
HKL-2000	data reduction
PHENIX	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.