4B0E

Crystal structure of the Caf1A usher protein N-terminal domain from Yersinia pestis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.3	293	SITTING DROPS 1 MKL OF CAF1AN 6 MG/ML PLUS 1 MKL OF 20% PEG 3350, 0.2 M AMMONIUM NITRATE, PH 6.3 AT 20 DEG C, 2-6 MONTHS

Crystal Properties
Matthews coefficient	Solvent content
1.9	36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.858	α = 90
b = 68.587	β = 90
c = 192.245	γ = 90

Symmetry
Space Group	C 2 2 21

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 CCD		2006-07-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	29.5	97	0.08	16	4.9		27484			35.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.07	87		0.32	3	2.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	INTERNAL STRUCTURE	2	30	27313	1365	97.22	0.20487	0.20524	0.26135	RANDOM	37.63

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]
-0.13			-0.03		0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.121
r_dihedral_angle_4_deg	21.487
r_dihedral_angle_3_deg	16.644
r_dihedral_angle_1_deg	5.921
r_scangle_it	3.819
r_scbond_it	2.483
r_mcangle_it	1.619
r_angle_refined_deg	1.594
r_angle_other_deg	1.552
r_mcbond_it	0.959
r_mcbond_other	0.253
r_symmetry_vdw_other	0.235
r_nbd_refined	0.196
r_nbd_other	0.192
r_nbtor_refined	0.179
r_xyhbond_nbd_refined	0.174
r_symmetry_vdw_refined	0.152
r_symmetry_hbond_refined	0.115
r_chiral_restr	0.098
r_nbtor_other	0.091
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3069
Nucleic Acid Atoms
Solvent Atoms	235
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing