Experiment: 6Z8G

Crystal structure of VSG13 soaked in 0.5 M used to phase VSG13 to solve the structure.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	296.15	Purified methylated VSG13 N-terminal domain was concentrated to 2.5 mg/ml in 10mM Tris.Cl pH 8.0. Crystals were grown at 23C by vapour diffusion using hanging drops formed from mixing a 1:1 volume ratio of the protein with an equilibration buffer consisting of 1.8-2.0M (NH4)2SO4, 100mM Tris.Cl pH 8.5.

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.148	α = 90
b = 68.407	β = 92.17
c = 157.759	γ = 90

Symmetry
Space Group	C 1 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 EIGER2 XE 16M		2018-04-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.9198	Diamond	I03

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	1.56	52.55	97.2	0.983	18.77	4		109295			19.34

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.56	1.62			0.983

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.56	52.55	1.34	109077	3905	95.7	0.226	0.226	0.233	0.2508	32.92

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	5142
Nucleic Acid Atoms
Solvent Atoms	529
Heterogen Atoms	128

Software

Software
Software Name	Purpose
PHENIX	refinement
xia2	data reduction
SHELXDE	phasing
Aimless	data scaling