3CWF

Crystal structure of PAS domain of two-component sensor histidine kinase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	289	0.2M Lithium sulfate, 0.1M HEPES, 25% PEG 3350, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.82	56.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.503	α = 90
b = 67.632	β = 90
c = 77.695	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	CUSTOM-MADE		2007-11-30	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	CUSTOM-MADE		2007-12-18	M	MAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	1.28239	APS	19-BM
2	SYNCHROTRON	APS BEAMLINE 19-BM	0.91948, 0.91979, 0.91272	APS	19-BM

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	2.2	50	99.7	0.084	21.53	6.2	15416	15369		-3	42.1

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	2.2	2.22	97.4		0.522	1.85	3.8	370

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.2	33.69	15308	14546	762	99.54	0.19676	0.19421	0.2442	RANDOM	40.012

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]
			0.79		-0.79

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.459
r_dihedral_angle_4_deg	18.898
r_dihedral_angle_3_deg	15.286
r_dihedral_angle_1_deg	6.08
r_scangle_it	3.395
r_scbond_it	2.219
r_angle_refined_deg	1.488
r_mcangle_it	1.475
r_mcbond_it	0.849
r_nbtor_refined	0.292
r_symmetry_vdw_refined	0.244
r_nbd_refined	0.201
r_symmetry_hbond_refined	0.17
r_xyhbond_nbd_refined	0.168
r_chiral_restr	0.098
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
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	1583
Nucleic Acid Atoms
Solvent Atoms	149
Heterogen Atoms	38

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing