7P4Y

GlnK2 from Methanothermococcus thermolithotrophicus in the apo state at a resolution of 2.3 A

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2J9D

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	291.15	MtGlnK2 apo was crystallized at a concentration of 30 mg/ml in 25 mM Tris/HCl pH 7.6, 10% glycerol, 2mM dithiothreitol and 500 mM NaCl on a 96-Well MRC 2-Drop Crystallization Plates in polystyrene (SWISSCI). Drop of 0.6 ul of protein was mixed with 0.6 ul of the crystallization solution. The reservoir contained 90 ul of the following crystallization solution 35 % w/v Pentaerythritol ethoxylate (15/4 EO/OH) and 100 mM HEPES pH 7.5.

Crystal Properties
Matthews coefficient	Solvent content
2.7	54.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.461	α = 90
b = 103.46	β = 90
c = 178.491	γ = 90

Symmetry
Space Group	P 2 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 2M-F		2020-02-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	0.99187	SLS	X06DA

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	2.3	73.16	96.2	0.133	0.144	0.055	0.998	10.2	6.7		70360

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	2.3	2.4	81.3		1.151	1.259	0.508	0.671	1.5	6

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	THROUGHOUT	2J9D	2.3	73.16	85.43	70326	3625	82.04	0.233	0.2215	0.2445	37.6095

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9066
Nucleic Acid Atoms
Solvent Atoms	104
Heterogen Atoms	13

Software

Software
Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
autoPROC	data reduction
autoPROC	data scaling
MOLREP	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 R01GM157729.