3FEW

Structure and Function of Colicin S4, a colicin with a duplicated receptor binding domain

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	0.16M MgCl2, 24% PEG 4000, 20% glycerol, 80mM Tris-HCl pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
4.05	69.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 240.34	α = 90
b = 240.34	β = 90
c = 80.03	γ = 120

Symmetry
Space Group	H 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	90	CCD	MARMOSAIC 225 mm CCD		2007-12-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.9761	SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.45	30	99.5	0.067	0.062	16.4	6.1	32353	32515		2	59.5

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)
	2.45	2.6	99.7		0.342	0.438	3.8	5.9	5185

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	2.45	25	32353	32286	1614	100	0.22	0.218	0.258	RANDOM	49.968

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]
0.9	0.45		0.9		-1.36

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.565
r_dihedral_angle_3_deg	17.428
r_dihedral_angle_4_deg	16.242
r_dihedral_angle_1_deg	5.627
r_scangle_it	2.635
r_scbond_it	1.599
r_angle_refined_deg	1.334
r_mcangle_it	1.153
r_mcbond_it	0.621
r_nbtor_refined	0.309

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.565
r_dihedral_angle_3_deg	17.428
r_dihedral_angle_4_deg	16.242
r_dihedral_angle_1_deg	5.627
r_scangle_it	2.635
r_scbond_it	1.599
r_angle_refined_deg	1.334
r_mcangle_it	1.153
r_mcbond_it	0.621
r_nbtor_refined	0.309
r_nbd_refined	0.223
r_symmetry_hbond_refined	0.19
r_symmetry_vdw_refined	0.171
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.093
r_bond_refined_d	0.011
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3386
Nucleic Acid Atoms
Solvent Atoms	200
Heterogen Atoms	1

Software

Software
Software Name	Purpose
MAR345	data collection
SHARP	phasing
REFMAC	refinement
XDS	data reduction
XDS	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.