3LI8

Crystal Structure of the extracellular domain of the putative histidine kinase mmHK1S-Z2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	5.6	293	15% PEG3350, 0.21M NH4SO4, 0.1M sodium cacodylate, pH 5.6, vapor diffusion, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.456	α = 90
b = 87.693	β = 90
c = 99.002	γ = 90

Symmetry
Space Group	C 2 2 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			2006-08-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.96784	NSLS	X4A

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	1.75	50	100	0.094	13.1	7.3		30021

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)
	1.75	1.81	99.8		0.301		6.9	2949

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	MOLECULAR REPLACEMENT	THROUGHOUT	1.75	53.45	29994	1522	99.89	0.191	0.189	0.234	RANDOM	21.395

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]
2.01			-0.94		-1.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.882
r_dihedral_angle_4_deg	18.875
r_dihedral_angle_3_deg	14.331
r_dihedral_angle_1_deg	5.653
r_scangle_it	4.772
r_scbond_it	3.599
r_mcangle_it	1.995
r_angle_refined_deg	1.95
r_mcbond_it	1.231
r_chiral_restr	0.144
r_bond_refined_d	0.027
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2066
Nucleic Acid Atoms
Solvent Atoms	183
Heterogen Atoms	26

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction