3F85

Structure of fusion complex of homo trimeric major pilin subunits CfaB of CFA/I fimbirae from ETEC E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	3.5		the CfaBBB protein (10 mg/ml in 20 mM Tri-HCl, pH 7.5, 100 mM NaCl) is crystallized by mixing in 1:1 ratio with 22% PEG 4000, 100 mM ammonium sulfate, 100 mM sodium citrate at pH 3.5, 1% ethylene glycol, 2% PEG 400, 1% iso-propanol, 10 mM MgCl2, 0.3% 1,2,3 heptanetriol; VAPOR DIFFUSION

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.39

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.406	α = 90
b = 44.982	β = 125.35
c = 97.88	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	CCD	MARMOSAIC 300 mm CCD			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID		APS	22-ID

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	2.1	20					25005

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	MOLECULAR REPLACEMENT	THROUGHOUT	2.1	20	23716	1243	93.36	0.23578	0.233	0.28301	RANDOM	62.294

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]
-6.99		-3.45	4.27		-1.27

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.593
r_dihedral_angle_3_deg	15.011
r_dihedral_angle_1_deg	6.268
r_scangle_it	4.257
r_dihedral_angle_4_deg	4.056
r_scbond_it	3.054
r_mcangle_it	1.864
r_angle_refined_deg	1.42
r_mcbond_it	1.191
r_nbtor_refined	0.267
r_symmetry_vdw_refined	0.179
r_nbd_refined	0.145
r_chiral_restr	0.115
r_xyhbond_nbd_refined	0.111
r_symmetry_hbond_refined	0.087
r_bond_refined_d	0.019
r_gen_planes_refined	0.015
r_metal_ion_refined	0.015
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3288
Nucleic Acid Atoms
Solvent Atoms	108
Heterogen Atoms	4

Software

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