1XBN

Crystal structure of a bacterial nitric oxide sensor: an ortholog of mammalian soluble guanylate cyclase heme domain

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6	277	MPD, cacodylate, pH 6, VAPOR DIFFUSION, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.25	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 120.607	α = 90
b = 120.607	β = 90
c = 120.607	γ = 90

Symmetry
Space Group	P 42 3 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 315		2003-02-03	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	1.7403,1.7379,1.6241,1.1159	SSRL	BL9-2

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	2.5	85	99.8	0.057	41	11	10884	10884	1	1	87

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	2.5	2.54	100		0.67	2.5	6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	MAD	THROUGHOUT	2.5	84.51	1	10841	10318	523	99.45	0.2647	0.26471	0.2634	0.29147	RANDOM	39.135

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	7.833
r_dihedral_angle_1_deg	6.87
r_scbond_it	4.885
r_mcangle_it	2.811
r_angle_refined_deg	1.991
r_mcbond_it	1.573
r_angle_other_deg	0.871
r_nbd_refined	0.331
r_symmetry_vdw_other	0.294
r_nbd_other	0.292
r_xyhbond_nbd_refined	0.283
r_metal_ion_refined	0.256
r_symmetry_vdw_refined	0.167
r_chiral_restr	0.121
r_nbtor_other	0.105
r_symmetry_hbond_refined	0.056
r_bond_refined_d	0.023
r_gen_planes_refined	0.021
r_gen_planes_other	0.007
r_bond_other_d	0.001
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_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	1609
Nucleic Acid Atoms
Solvent Atoms	11
Heterogen Atoms	45

Software

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