3IQT

Structure of the HPT domain of Sensor protein barA from Escherichia coli CFT073.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	277	0.05M Calcium Chloride dihydrate, ).1M Bis Tris pH6.5, 30% PEG Monomethyl ether 550, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.86	33.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 24.316	α = 90
b = 60.359	β = 108.21
c = 37.156	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		2009-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97942	APS	19-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	1.4	50	99.3	0.094	10.5	5	19949	19949		-3	15.3

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	1.4	1.42	100		0.414		4.9	1030

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	1.4	35.3	19928	19928	1012	99.2	0.143	0.143	0.141	0.181	RANDOM	19.949

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]
-0.59		-0.04	0.94		-0.37

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.244
r_dihedral_angle_4_deg	24.226
r_dihedral_angle_3_deg	11.359
r_sphericity_free	5.819
r_dihedral_angle_1_deg	5.09
r_scangle_it	4.887
r_sphericity_bonded	3.28
r_scbond_it	3.088
r_mcangle_it	2.016
r_angle_refined_deg	1.493
r_rigid_bond_restr	1.371
r_mcbond_it	1.256
r_angle_other_deg	0.931
r_mcbond_other	0.602
r_chiral_restr	0.077
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	960
Nucleic Acid Atoms
Solvent Atoms	141
Heterogen Atoms	15

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
SHELXD	phasing
SHELXE	model building
SOLVE	phasing
RESOLVE	phasing
ARP/wARP	model building
CCP4	phasing
O	model building
Coot	model building