Experiment: 4TTK

Racemic structure of Sunflower Trypsin Inhibitor-1 (SFTI-1)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	0.1 M HEPES pH 7.5, 1.0 M ammonium sulfate, 3% w/v polyethylene glycol 8,000, 0.14 M sodium thiocyanate

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.64	α = 90
b = 42.64	β = 90
c = 12.965	γ = 120

Symmetry
Space Group	P -3

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	ADSC QUANTUM 315r		2013-11-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.9537	Australian Synchrotron	MX2

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	1.25	21.46	99.4	45.3	11.4		7289			46.92

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.25	1.29	98.9		0.221	0.221	7.3	4.9

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-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION		FREE R-VALUE	1.2502	13.957	1.35	7286	754	99.74	0.2637	0.2623	0.2589	0.2763	0.2791

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	7.834
f_angle_d	1.253
f_chiral_restr	0.053
f_plane_restr	0.011
f_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	105
Nucleic Acid Atoms
Solvent Atoms	7
Heterogen Atoms	104

Software

Software
Software Name	Purpose
PHENIX	refinement
CrystalClear	data reduction
PDB_EXTRACT	data extraction