3A0R

Crystal structure of histidine kinase ThkA (TM1359) in complex with response regulator protein TrrA (TM1360)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		293	0.1M Bis-Tris-propane pH 7.0, 1.8M sodium acetate, vapor diffusion, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
4.93	75.04

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.594	α = 90
b = 110.594	β = 90
c = 352.508	γ = 90

Symmetry
Space Group	I 41 2 2

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 210		2006-06-04	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	0.97890, 1.00551, 1.00855, 0.99240	Photon Factory	AR-NW12A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	3.8	50	94.9	0.054	22.6	7.4		11189		-1	136.94

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.8	3.89	85.1		0.362	1.2	3.6

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	MAD	THROUGHOUT	3.8	20	10381	544	98.18	0.35094	0.35	0.37098	RANDOM	164.727

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]
15.63			15.63		-31.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.216
r_dihedral_angle_3_deg	20.447
r_dihedral_angle_4_deg	15.617
r_dihedral_angle_1_deg	6.94
r_angle_refined_deg	1.203
r_nbtor_refined	0.31
r_scangle_it	0.243
r_nbd_refined	0.242
r_symmetry_vdw_refined	0.23
r_xyhbond_nbd_refined	0.181
r_scbond_it	0.152
r_mcangle_it	0.149
r_symmetry_hbond_refined	0.128
r_chiral_restr	0.084
r_mcbond_it	0.081
r_metal_ion_refined	0.03
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
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_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	3708
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	1

Software

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