Experiment: 3SI4

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277.15	15% PEG8000, 20mM sodium phosphate, 175mM sodium chloride, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.35	α = 90
b = 71.23	β = 100.36
c = 72.59	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	108	CCD	MARMOSAIC 225 mm CCD	Collimating mirror	2009-06-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	1.00	SLS	X06DA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (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	1.27	50	98.4	0.038	26.4	2.7	91193	91193			11.62

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.27	1.29	95.2		0.471	2.2	2.5	4405

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	Free R	1H8D	1.27	34.602	90740	86393	4347	93.19	0.1382	0.1382	0.1372	0.1586	Random	20.8029

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]
-0.2656		1.2891	0.0412		0.2245

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.022
f_angle_d	1.128
f_chiral_restr	0.075
f_bond_d	0.008
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2341
Nucleic Acid Atoms
Solvent Atoms	401
Heterogen Atoms	54

Software

Software
Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

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.