3GL9

The structure of a histidine kinase-response regulator complex sheds light into two-component signaling and reveals a novel cis autophosphorylation mechanism

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	294	1.9M ammonium sulfate, 0.1M sodium acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.16	42.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 155.233	α = 90
b = 155.233	β = 90
c = 34.482	γ = 120

Symmetry
Space Group	P 65

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200	CCD	ADSC QUANTUM 315r	Mirrors	2008-06-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A	0.979	ESRF	BM30A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.8	29.3	99.7	0.073	0.33	7.083	10.7		44647	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.9	99.2		0.333	0.333	2.2	9.5	6412

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3DGE	1.8	25	2	2	44636	2209	99.74	0.188	0.188	0.185	0.237	RANDOM	16.99

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]
0.3	0.15		0.3		-0.46

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.804
r_dihedral_angle_4_deg	17.21
r_dihedral_angle_3_deg	15.008
r_dihedral_angle_1_deg	5.361
r_scangle_it	2.901
r_scbond_it	1.751
r_angle_refined_deg	1.214
r_mcangle_it	1.079
r_mcbond_it	0.682
r_nbtor_refined	0.299

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.804
r_dihedral_angle_4_deg	17.21
r_dihedral_angle_3_deg	15.008
r_dihedral_angle_1_deg	5.361
r_scangle_it	2.901
r_scbond_it	1.751
r_angle_refined_deg	1.214
r_mcangle_it	1.079
r_mcbond_it	0.682
r_nbtor_refined	0.299
r_symmetry_vdw_refined	0.228
r_nbd_refined	0.205
r_xyhbond_nbd_refined	0.18
r_symmetry_hbond_refined	0.149
r_chiral_restr	0.08
r_metal_ion_refined	0.036
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3901
Nucleic Acid Atoms
Solvent Atoms	653
Heterogen Atoms	29

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.