1XHF

Crystal structure of the bef3-activated receiver domain of redox response regulator arca

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	277	Ammonium Acetate, MPD, Sodium Acetate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.96	68.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.169	α = 90
b = 86.169	β = 90
c = 213.082	γ = 120

Symmetry
Space Group	P 65 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 4		2004-02-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.97176	NSLS	X4A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.15	30	100		8.5	26318	26280		-3	15.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.15	2.23	100		3.7	6.8	2529

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	Model Of ArcA Receiver Domain Without Mg2+/BeF3-	2.152	30	26260	26206	2641	99.89	0.18978	0.18716	0.21219	RANDOM	29.168

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]
1.09	0.55		1.09		-1.64

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.067
r_scangle_it	2.9
r_mcangle_it	2.438
r_scbond_it	1.925
r_angle_refined_deg	1.445
r_mcbond_it	1.417
r_nbd_refined	0.209
r_symmetry_hbond_refined	0.207
r_symmetry_vdw_refined	0.202
r_xyhbond_nbd_refined	0.186

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.067
r_scangle_it	2.9
r_mcangle_it	2.438
r_scbond_it	1.925
r_angle_refined_deg	1.445
r_mcbond_it	1.417
r_nbd_refined	0.209
r_symmetry_hbond_refined	0.207
r_symmetry_vdw_refined	0.202
r_xyhbond_nbd_refined	0.186
r_metal_ion_refined	0.123
r_chiral_restr	0.101
r_bond_refined_d	0.017
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1923
Nucleic Acid Atoms
Solvent Atoms	117
Heterogen Atoms	22

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.