3F83

Structure of fusion complex of the minor pilin CfaE and major pilin CfaB of CFA/I pili from ETEC E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	4		The CfaEB protein was solubilized in a buffer containing 20 mM MES at pH 6.0 plus 100 mM NaCl. Crystallization was done in hanging drop setup of 1ul of protein solution with 1ul of well solution consisting of 10-11% PEG 8000, 200 mM ammonium sulfate, 100 mM citrate at pH 4.0, VAPOR DIFFUSION

Crystal Properties
Matthews coefficient	Solvent content
3.43	64.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.914	α = 90
b = 45.405	β = 97.4
c = 128.473	γ = 90

Symmetry
Space Group	P 1 21 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	0.75	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.1	49	92	0.062	23	7

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	2.3	25	29552	2273	92.15	0.1965	0.19349	0.23438	RANDOM	32.651

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]
-2.84		-1.72	6.06		-3.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	18.14
r_scangle_it	5.97
r_dihedral_angle_1_deg	3.955
r_scbond_it	3.781
r_mcangle_it	2.275
r_angle_refined_deg	1.58
r_mcbond_it	1.267
r_symmetry_hbond_refined	0.263
r_chiral_restr	0.21
r_nbd_refined	0.203
r_symmetry_vdw_refined	0.183
r_xyhbond_nbd_refined	0.153
r_bond_refined_d	0.019
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
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	3856
Nucleic Acid Atoms
Solvent Atoms	192
Heterogen Atoms	16

Software

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