4DDD

Crystal structure of an immunogenic protein from ehrlichia chaffeensis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	290	EBS SCREEN JCSG+ H6: 100MM BISTRIS PH 6.5, 17% PEG 10K, 100MM AMMONIUM ACETATE, EHCHA.00493.A.A2 PS01157 AT 18MG/ML; CRYSTAL FOR PHASING WAS SOAKED IN CRYSTALLIZATION BUFFER CONTAINING 1M IODIDE, PH 8.5., VAPOR DIFFUSION, SITTING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.59	52.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.71	α = 90
b = 65.44	β = 90
c = 90.97	γ = 90

Symmetry
Space Group	P 21 21 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	RIGAKU SATURN 944	RIGAKU VARIMAX	2011-08-12	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	RIGAKU SATURN 944+	RIGAKU VARIMAX	2012-01-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418
2	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	1.9	50	99	0.061	0.061	21.2	5.94	30172	29858		-3	22.47

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)
1,2	1.9	1.95	91.3		0.309	0.309	3.6	2.8	2168

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.9	45.49	30172	29858	1515	99	0.161	0.161	0.159	0.188	RANDOM	13.57

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]
-0.07			0.11		-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.188
r_dihedral_angle_4_deg	16.148
r_dihedral_angle_3_deg	13.122
r_dihedral_angle_1_deg	6.037
r_angle_refined_deg	1.685
r_angle_other_deg	0.962
r_chiral_restr	0.104
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2300
Nucleic Acid Atoms
Solvent Atoms	307
Heterogen Atoms	19

Software

Software
Software Name	Purpose
StructureStudio	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling