3FXB

Crystal structure of the ectoine-binding protein UehA

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2VPO	PDB entry 2VPO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	278	100mM Na Citrate pH 5.6-6.0, 2.4-2.6M Ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 278K

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63	α = 90
b = 61.3	β = 102.6
c = 86.3	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	ADSC QUANTUM 315r		2008-06-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.9000	ESRF	ID23-1

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	2.9	20	99.6	0.111	11.32	4		14412		2	44.69

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	2.9	2.97	99.9		0.426	3.5	3.6

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	PDB entry 2VPO	2.9	19.86	13642	718	100	0.22009	0.218	0.26161	RANDOM	43.083

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]
-0.03		0.01	0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.498
r_dihedral_angle_3_deg	17.401
r_dihedral_angle_4_deg	15.631
r_dihedral_angle_1_deg	5.07
r_angle_refined_deg	0.965
r_scangle_it	0.847
r_scbond_it	0.522
r_mcangle_it	0.387
r_nbtor_refined	0.296
r_mcbond_it	0.266
r_symmetry_vdw_refined	0.231
r_nbd_refined	0.18
r_xyhbond_nbd_refined	0.105
r_chiral_restr	0.069
r_symmetry_hbond_refined	0.045
r_bond_refined_d	0.007
r_gen_planes_refined	0.002
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_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	4862
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	20

Software

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